Delaware County, IA hail & severe wind history
140 storm reports on file for Delaware County between 2010-04-05 and 2026-06-10 — 35 hail and 105 severe thunderstorm wind. That averages 8.2 reports a year, and Jun is the busiest month.
Hail reports
35
2.1 per year
Largest hail
1.75"
golf ball size · 2021-08-24
Strongest gust
90 mph
78 kt · 2019-06-30
Reported damage
$71K
property + crop, as filed
Storm days
68
distinct days with a report
Busiest year
2013
19 reports
Search every Delaware County report
Filter the full record below — pick a year, narrow to a month, or drag the hail-size slider to see only the storms big enough to dent a roof (1" and up is the usual threshold insurers care about).
140 of 140 reports match.
Reports by month for the current filter — the shape of Delaware County’s storm season.
| Date | Type | Size / gust | Nearest location | Report detail |
|---|---|---|---|---|
| 2026-06-10 11:20 | Wind | 50 kt 58 mph | 4.13 mi W of Oneida | Powerlines leaning due to strong winds. |
| 2026-06-10 11:30 | Wind | 56 kt 64 mph | 3.13 mi WSW of Greeley | Tree down near the intersection of County Road 64 and 200th Ave. Time estimated by radar. |
| 2026-05-17 23:44 | Wind | 61 kt 70 mph | 2.07 mi N of Ryan | Two power poles snapped north of town near Hwy 13 by thunderstorm winds. The of the time of the event was estimated using radar. |
| 2026-04-17 15:20 | Wind | 52 kt 60 mph | .51 mi W of Twin Bridges Park | The time was estimated using radar data. |
| 2026-04-17 15:50 | Hail | 1.25" half dollar | 3.78 mi NNE of Hopkinton | No narrative filed · source: Emergency Manager |
| 2026-04-14 16:51 | Hail | 1" quarter | 1.23 mi SE of Ryan | Report received from Mping. |
| 2026-04-14 16:55 | Wind | 70 kt 81 mph | 0 mi N of Delhi | Lots of trees blown down, and flag poles folded in half. The time was estimated from radar data. |
| 2026-04-14 16:56 | Wind | 61 kt 70 mph | .51 mi E of Delhi | Machine shed and hardwood tree branches snapped due to downburst winds. |
| 2026-04-14 17:00 | Wind | 70 kt 81 mph | .51 mi E of Delhi | Significant damage to farm buildings. Wooden stakes impaled into the ground. |
| 2026-04-14 17:02 | Hail | 1" quarter | 1.47 mi SSE of Turtle Creek Park | Report received from Mping. |
| 2026-04-14 17:32 | Wind | 50 kt 58 mph | 0 mi N of Delaware | A small tree and some limbs were blown down. |
| 2025-07-29 01:05 | Wind | 65 kt 75 mph | .86 mi NW of Manchester | Broadcast Media relayed a report of a large tree uprooted in Manchester, which fell on a fence. The time and location of the event were estimated using radar. |
| 2025-07-29 01:32 | Wind | 65 kt 75 mph | .86 mi NW of Manchester | The Emergency Manager reported that trees and power lines are down. |
| 2025-07-29 01:37 | Wind | 65 kt 75 mph | .86 mi SW of Turtle Creek Park | Broadcast media relayed photos of tree damage around Lake Delhi. |
| 2025-07-11 15:17 | Wind | 65 kt 75 mph | 2.58 mi SE of Buck Creek | Photos and video relayed on X of a large tree uprooted at a farmstead along with a blown down shed. The time of the event was estimated using radar. |
| 2025-07-03 19:25 | Hail | 1" quarter | 2.46 mi NE of Manchester Arpt | A trained spotter reported that hail ranged in size from half an inch to a quarter of an inch. |
| 2025-07-03 19:30 | Hail | 1" quarter | .51 mi W of Manchester | No narrative filed · source: Emergency Manager |
| 2025-06-11 19:08 | Wind | 52 kt 60 mph | 0 mi N of Dundee | Large branches down in town. Time estimated using radar. |
| 2025-06-11 19:15 | Wind | 56 kt 64 mph | 2.04 mi E of Delhi | Large tree in roadway at 245th St and 260th Ave east of Delhi. Done by storm outflow winds well ahead of the storms themselves. Time estimated by outflow signature on radar. |
| 2025-06-11 19:29 | Wind | 56 kt 64 mph | 1.38 mi N of Manchester | Large lighting pole was downed at baseball field at fairgrounds. |
| 2025-03-14 19:53 | Wind | 56 kt 64 mph | 1.02 mi W of Manchester | Measured by wind equipement. |
| 2024-07-15 16:15 | Wind | 65 kt 75 mph | .51 mi W of Backbone State Park | A trained spotter reported that a pine tree was snapped by thunderstorm winds at Backbone State Park. |
| 2024-07-15 16:48 | Wind | 61 kt 70 mph | 0 mi N of Dundee | The Emergency Manager reported a 10 inch tree limbs down. |
| 2024-05-21 18:36 | Wind | 52 kt 60 mph | 2.76 mi S of Ryan | Spotter estimated wind gust. |
| 2024-04-16 15:45 | Wind | 52 kt 60 mph | .86 mi NW of Manchester | A public report of an estimated 60 MPH thunderstorm wind gust. There was a fence blown down with tree limbs knocked down. |
| 2023-07-28 18:49 | Wind | 61 kt 70 mph | .86 mi NW of Manchester | A trained spotter reported a 70 mph wind gust with the thunderstorm. |
| 2023-07-28 18:53 | Wind | 53 kt 61 mph | 0 mi N of Ryan | Emergency manager reported a 61 mph wind gust. |
| 2023-07-28 19:00 | Wind | 61 kt 70 mph | .69 mi N of Ryan | House damage and roof blown off of a shed in Ryan. |
| 2023-04-19 08:55 | Hail | 1" quarter | .86 mi NW of Hopkinton | No narrative filed · source: Storm Chaser |
| 2023-04-04 20:42 | Hail | 1" quarter | .51 mi W of Masonville | No narrative filed · source: Emergency Manager |
| 2022-08-03 09:59 | Wind | 56 kt 64 mph | 1.47 mi NNW of Manchester | The Emergency Manager reported that a livestock building was flipped over. The time of the event was estimated based on radar. |
| 2022-08-03 10:00 | Wind | 56 kt 64 mph | .86 mi NW of Manchester | The Emergency Manager reported tree branches down and tree damage around town. |
| 2022-08-03 10:05 | Wind | 52 kt 60 mph | 1.23 mi NW of Baileys Ford Park | A public report that several small tree limbs were down. They estimated thunderstorm winds around 60 MPH. |
| 2022-07-23 23:10 | Wind | 56 kt 64 mph | .86 mi NE of Greeley | The Emergency Manager relayed a report of a tree down in Greeley. |
| 2022-07-23 23:15 | Wind | 52 kt 60 mph | 0 mi N of Manchester | The Emergency Manager reported downed power lines. |
| 2022-07-23 23:19 | Wind | 56 kt 64 mph | 0 mi N of Hopkinton | A trained spotter sent pictures via social media that shows a few branches near 6 inches in diameter down along with the trunk of a snapped tree. The time of the event was estimated using radar. |
| 2022-07-23 23:20 | Wind | 61 kt 70 mph | 0 mi N of Delhi | Emergency Manager reported trees down over roads in the county. |
| 2022-07-05 20:40 | Wind | 55 kt 63 mph | 0 mi N of Hopkinton | A trained spotter reported a tree down on powerlines. |
| 2022-06-15 16:13 | Hail | 1" quarter | 3.05 mi W of Dundee | Winds to 40 mph also reported. |
| 2021-12-15 20:48 | Wind | 50 kt 58 mph | 2.31 mi NNE of Robinson | Shingles damaged at home, with other damage in neighborhood. |
| 2021-12-15 20:49 | Wind | 65 kt 75 mph | .51 mi E of Greeley | House and roofs damaged in Greeley and Oneida. |
| 2021-08-24 14:19 | Wind | 70 kt 81 mph | 1.38 mi N of Manchester Arpt | EM relayed a report of a pole barn flattened northwest of Manchester. |
| 2021-08-24 14:25 | Wind | 70 kt 81 mph | .51 mi E of Manchester | A roof peeled off a downtown building, with several trees blown down in downtown. |
| 2021-08-24 14:26 | Hail | 1.75" golf ball | 2.91 mi NE of Manchester Arpt | No narrative filed · source: Fire Department/Rescue |
| 2021-08-24 14:41 | Wind | 52 kt 60 mph | .69 mi N of Oneida | Very strong winds reported. |
| 2021-08-24 14:53 | Wind | 65 kt 75 mph | .69 mi S of Hopkinton | Several large trees down in town. |
| 2021-08-10 14:55 | Wind | 52 kt 60 mph | 2.07 mi N of Hopkinton | A public report of estimated 60 mph winds was relayed by Delaware County officials. |
| 2021-06-20 18:20 | Wind | 50 kt 58 mph | .86 mi NW of Manchester | Tree branches were blown down, resulting in city needing to clear up. |
| 2020-09-06 01:43 | Wind | 55 kt 63 mph | .86 mi NW of Manchester | A strong wind gust was reported by broadcast media. |
| 2020-08-28 15:29 | Wind | 65 kt 75 mph | 1.53 mi W of Hopkinton | A large tree was blown down, along with many large limbs nearby. |
| 2020-08-28 15:30 | Wind | 65 kt 75 mph | 0 mi N of Hopkinton | Large tree limbs were snapped as reported on social media. |
| 2020-08-28 15:30 | Wind | 61 kt 70 mph | .51 mi E of Hopkinton | A large limb at least 12 inches in diameter was blown down. |
| 2020-07-09 14:21 | Wind | 61 kt 70 mph | 1.68 mi WNW of Greeley | Widespread corn flattened due to thunderstorm winds. |
| 2020-07-09 14:50 | Wind | 61 kt 70 mph | 0 mi N of Hopkinton | Social media report of a 6 inch diameter tree snapped off by wind. |
| 2020-06-05 00:45 | Wind | 65 kt 75 mph | .86 mi NW of Manchester | The Emergency Manager reported that part of a roof was torn off of rural building. The time of the event was estimated using radar. |
| 2019-09-12 16:22 | Wind | 56 kt 64 mph | .51 mi W of Manchester | Trees and branched reported blown down near east Main Street and D5X. |
| 2019-09-09 20:55 | Wind | 56 kt 64 mph | .51 mi W of Masonville | The public reported a few trees and branches blown down in Masonville, and 2.20 inches of rain one hour. |
| 2019-06-30 16:01 | Wind | 70 kt 81 mph | .69 mi S of Edgewood | Numerous trees were reported blown down. |
| 2019-06-30 16:07 | Wind | 70 kt 81 mph | 0 mi N of Dundee | Numerous trees blown down. |
| 2019-06-30 16:11 | Wind | 78 kt 90 mph | 0 mi N of Earlville | Roof blown off a house. |
| 2019-06-30 16:18 | Wind | 65 kt 75 mph | 1.47 mi NNW of Masonville | A large tree was blown down blocking a rural road north of Masonville. |
| 2018-09-01 00:23 | Hail | 0.75" penny | 3.45 mi N of Robinson | The county emergency manager reported penny size hail 5 miles southwest of Manchester. |
| 2018-06-09 21:09 | Wind | 65 kt 75 mph | 1.47 mi NNW of Manchester | Multiple trees were snapped off about halfway up on the trunk along Highway 13 north of Manchester. The time was estimated from radar. |
| 2018-05-25 21:49 | Hail | 0.75" penny | 3.76 mi NW of Ryan | A delayed public report was received via social media of hail up to the size of pennies. The hail lasted for approximately 2 minutes. |
| 2017-07-19 17:10 | Wind | 50 kt 58 mph | .69 mi S of Edgewood | A trained spotter reported a large tree branch was blown down. |
| 2017-07-19 17:55 | Wind | 54 kt 62 mph | .69 mi N of Colesburg | The county emergency manager reported a local wind sensor measured a peak wind gust of 62 mph. |
| 2017-07-05 19:04 | Hail | 1" quarter | 0 mi N of Dundee | A public report was received of hail between 0.50 up to 1.0 inch in diameter. This report was relayed by the county emergency manager. |
| 2017-06-28 18:15 | Wind | 52 kt 60 mph | 0 mi N of Hopkinton | Large branches blown down. |
| 2017-06-28 18:17 | Wind | 56 kt 64 mph | .86 mi NW of Sand Spg | Power lines were reported down due to wind. |
| 2017-05-17 18:28 | Wind | 77 kt 89 mph | 1.02 mi W of Ryan | The local fire department reported a measured wind gust of 77 knots. |
| 2017-05-17 18:32 | Wind | 52 kt 60 mph | 0 mi N of Ryan | The county emergency manager reported wind gusts of up to 70 mph. |
| 2017-05-17 18:51 | Wind | 65 kt 75 mph | .69 mi N of Oneida | This report was from the county emergency manager who estimated wind gusts up to 75 mph. |
| 2017-05-17 18:52 | Wind | 61 kt 70 mph | 1.38 mi S of Edgewood | A trained spotter reported a wind gust estimated to 70 mph. |
| 2017-05-17 19:00 | Wind | 60 kt 69 mph | 3.13 mi ESE of Petersburg | A trained spotter reported several farm buildings damaged near Dyersville. |
| 2017-03-06 21:09 | Wind | 63 kt 72 mph | 1.38 mi S of Edgewood | This measurement was relayed by the local emergency manager. |
| 2017-03-06 21:18 | Wind | 60 kt 69 mph | .69 mi N of Oneida | Winds were estimated of 60 to 70 mph. |
| 2017-03-06 21:20 | Wind | 51 kt 59 mph | .69 mi S of Manchester | Iowa Department of Transportation road sensor measured this wind gust. |
| 2016-08-04 18:18 | Wind | 70 kt 81 mph | .69 mi N of Colesburg | The Fire Department reported that a steel roof was blown off of a building across the the street from the Fire Station. |
| 2016-08-04 18:19 | Wind | 65 kt 75 mph | .69 mi N of Colesburg | The Fire Department reported that a 1 foot diameter branch from a 40 year old maple tree was broken off. |
| 2016-07-23 15:10 | Wind | 52 kt 60 mph | .86 mi NW of Manchester | A public report of 2 estimated 8 inch in diameter trees were down. This report was received by Twitter and the time was estimated by radar. |
| 2016-07-23 15:21 | Wind | 52 kt 60 mph | 0 mi N of Delhi | A trained spotter reported 3 tree limbs approximately 6 to 12 inches in diameter were down. |
| 2016-07-23 15:25 | Wind | 52 kt 60 mph | .69 mi S of Hopkinton | A trained spotter reported via facebook several large trees and some branches were down. The time was estimated using radar. |
| 2016-07-17 04:25 | Wind | 52 kt 60 mph | 1.47 mi SSW of Manchester | A storm survey team observed numerous tree branches down that were greater than 6 inches in diameter. The time is estimated based on radar. |
| 2016-07-06 01:57 | Wind | 50 kt 58 mph | .69 mi S of Hopkinton | A large tree was reported down blocking a road. The time was estimated based upon radar. |
| 2016-06-14 19:22 | Wind | 52 kt 60 mph | .86 mi SE of Manchester | Law enforcement reported a tree branch down in the 2200 block of Jefferson Road. The branch was large enough to require a deputy to remove it from the road. The time of this event is estimated from radar. |
| 2016-05-26 04:00 | Wind | 61 kt 70 mph | 2.31 mi SSE of Dundee | The local coop observer reported a 2 foot diameter tree was snapped about 4 to 5 feet above the ground at 1435 165th street. This is roughly 2 miles South Southeast of Dundee. |
| 2016-05-26 04:15 | Wind | 52 kt 60 mph | 1.38 mi S of Edgewood | A report of 3 inch diameter branches that are down. |
| 2015-11-11 17:50 | Wind | 61 kt 70 mph | 2.91 mi NW of Ryan | The county emergency manager reported a 40 X 60 ft pole barn was destroyed and rolled into another building. The time was estimated by radar. |
| 2015-11-11 17:50 | Wind | 70 kt 81 mph | 2.15 mi ESE of Backbone State Park | The county emergency manager reported a structurally sound unused hog house was damaged. The time was estimated by radar. |
| 2015-11-11 17:55 | Wind | 70 kt 81 mph | .86 mi SE of Buck Creek | The county emergency manager reported a roof was partially blown off and a machine shed was destroyed. The time was estimated by radar. |
| 2015-06-29 17:44 | Hail | 0.75" penny | .69 mi N of Oneida | No narrative filed · source: Emergency Manager |
| 2015-06-22 07:40 | Wind | 78 kt 90 mph | 1.47 mi NNW of Manchester | Extensive damage reported 1 to 2 miles north of Manchester, including farm buildings flattened and trees snapped off. |
| 2015-06-22 08:03 | Wind | 70 kt 81 mph | .86 mi NW of Manchester | Numerous trees reported blown down, and power lines downed across Delaware County. |
| 2015-06-20 16:12 | Hail | 1" quarter | .69 mi S of Hopkinton | No narrative filed · source: Storm Chaser |
| 2014-06-30 14:06 | Wind | 60 kt 69 mph | .86 mi NW of Manchester | The emergency manager reported numerous trees down. |
| 2014-06-19 14:08 | Wind | 50 kt 58 mph | .51 mi E of Delaware | The emergency manager reported a storage shed leveled. |
| 2014-06-19 14:28 | Wind | 52 kt 60 mph | .69 mi N of Colesburg | Wind speed reported by the Fire Department and relayed by the Emergency manager. |
| 2014-06-16 16:30 | Wind | 50 kt 58 mph | 1.47 mi NNE of Sand Spg | The public reported several tree branches down. |
| 2014-06-16 16:30 | Wind | 52 kt 60 mph | 1.47 mi NNW of Sand Spg | The public reported a large tree blown down. |
| 2014-06-16 16:30 | Hail | 1" quarter | 1.47 mi NNE of Sand Spg | The public reported hail the size of quarters. |
| 2014-06-16 20:46 | Wind | 61 kt 70 mph | .69 mi S of Manchester Arpt | The emergency manager relayed a report of 70 mph winds from the Manchester Fire Department. |
| 2014-06-16 21:00 | Wind | 52 kt 60 mph | 1.38 mi S of Edgewood | A trained spotter reported two buildings damaged on a farm along with a tree and power pole blown down. |
| 2013-09-19 18:20 | Wind | 56 kt 64 mph | .51 mi E of Delaware | Broadcast Media reported a large sign was blown down damaging 3 cars. Time of the event was estimated from radar. |
| 2013-08-30 18:00 | Wind | 61 kt 70 mph | 4.57 mi ESE of Earlville | Emergency manager reported 5 power poles down along county Highway X47 southeast of Earlville. There was also damage to crops in the same area along with several branches down. Winds were estimated at 70 mph. |
| 2013-06-21 07:51 | Hail | 0.75" penny | .69 mi N of Colesburg | No narrative filed · source: Emergency Manager |
| 2013-06-21 07:54 | Wind | 50 kt 58 mph | 0 mi N of Backbone State Park | The Emergency Manager reported limbs were down and that awnings were damaged as the storm moved through. |
| 2013-06-21 08:00 | Hail | 1" quarter | .69 mi S of Manchester Arpt | No narrative filed · source: Emergency Manager |
| 2013-05-29 16:40 | Wind | 50 kt 58 mph | .69 mi S of Edgewood | The emergency manager reported 10 inch tree limbs down in Edgewood along with power out in town. |
| 2013-05-29 16:56 | Hail | 0.75" penny | 1.38 mi S of Colesburg | No narrative filed · source: Emergency Manager |
| 2013-05-29 16:57 | Hail | 1" quarter | .69 mi N of Colesburg | No narrative filed · source: Emergency Manager |
| 2013-05-29 19:29 | Hail | 0.88" nickel | .69 mi N of Colesburg | No narrative filed · source: Emergency Manager |
| 2013-05-19 22:15 | Wind | 50 kt 58 mph | 1.72 mi NE of Robinson | The Sheriff's Department reported a camper blown over on top of a truck on 300th Street. |
| 2013-05-19 22:20 | Wind | 52 kt 60 mph | .86 mi NW of Delhi | The emergency manager reported power lines down between Delaware and Delhi and a tree was down across the highway just west of Manchester. |
| 2013-05-19 22:25 | Wind | 50 kt 58 mph | 2.46 mi SW of Baileys Ford Park | The sheriff's department reported a 40 by 50 foot shed had been lifted and dropped onto 180th Avenue. |
| 2013-05-19 22:28 | Wind | 50 kt 58 mph | .86 mi SW of Baileys Ford Park | The sheriff's department reported a roof blown off a pole barn. |
| 2013-04-30 00:43 | Hail | 0.88" nickel | 0 mi N of Dundee | No narrative filed · source: Emergency Manager |
| 2013-04-29 09:00 | Hail | 1" quarter | 0 mi N of Ryan | Quarter sized hail fell in Ryan, IA near Highway 13 at 1000 am CDT April 29. |
| 2013-04-29 09:31 | Hail | 0.75" penny | 5.62 mi N of Sand Spg | No narrative filed · source: Emergency Manager |
| 2013-04-29 10:11 | Hail | 0.88" nickel | 4.62 mi NNE of Manchester Arpt | No narrative filed · source: Emergency Manager |
| 2013-04-29 10:20 | Hail | 0.88" nickel | .86 mi NE of Greeley | No narrative filed · source: Emergency Manager |
| 2013-01-28 22:12 | Hail | 0.75" penny | 0 mi N of Delhi | Dime sized hail fell in Delhi, IA around 1012 pm CST January 28. |
| 2012-08-04 12:16 | Wind | 61 kt 70 mph | 2.06 mi NW of Buck Creek | The Delaware County Sheriffs Office relayed a report from the Emergency Manager of thunderstorm wind gusts estimated to be between 60 and 70 mph. |
| 2012-07-25 20:15 | Hail | 0.75" penny | 2 mi SE of Edgewood | A trained spotter reported dime size hail falling for 6 minutes near Edgewood. |
| 2012-07-25 20:52 | Wind | 52 kt 60 mph | 1.02 mi W of Ryan | The public reported a 60 mph wind gust near Ryan. |
| 2012-07-25 21:07 | Wind | 61 kt 70 mph | 0 mi N of Delhi | The emergency manager reported trees and tree limbs down along with power lines near Delhi. Wind gusts were estimated at 70 mph. |
| 2012-07-25 21:30 | Wind | 60 kt 69 mph | 7.18 mi ESE of Earlville | A trained spotter reported a barn roof blown off about 7 miles southeast of Earlville. |
| 2011-07-11 04:37 | Wind | 56 kt 64 mph | .86 mi NW of Manchester | Wind gusts estimated to be 65 mph broke some windows in some homes in Manchester, IA at 537 am CDT July 11. Some power outages were also observed. |
| 2011-04-03 18:14 | Hail | 1" quarter | 1.23 mi SW of Hopkinton | Quarter sized hail fell 1 mile west of Hopkinton, IA at 714 pm CDT April 3. |
| 2011-04-03 18:17 | Hail | 1" quarter | .69 mi S of Hopkinton | Quarter sized hail fell in Hopkinton, IA at 717 pm CDT April 3. |
| 2010-08-13 04:00 | Wind | 61 kt 70 mph | .95 mi N of Manchester | Wind gusts estimated to be 60 mph blew down a large tree in front of the West Delaware Lambert School building in Manchester, IA during the early morning of August 13. |
| 2010-06-17 22:50 | Wind | 56 kt 64 mph | .85 mi WSW of Backbone State Park | Wind gusts estimated to be 65 mph blew down a tree in Backbone State Park blocking a road around 1150 pm June 17. This report was relayed by the Delaware County Sheriffs Office. |
| 2010-05-12 15:20 | Hail | 0.75" penny | 1.12 mi S of Manchester Arpt | No narrative filed · source: Emergency Manager |
| 2010-05-12 15:27 | Hail | 0.88" nickel | 0 mi N of Manchester Arpt | No narrative filed · source: Trained Spotter |
| 2010-05-12 20:35 | Hail | 1" quarter | .86 mi SW of Manchester | Quarter-sized hail fell just south of Manchester, IA at 935 pm May 12. |
| 2010-04-06 17:15 | Wind | 61 kt 70 mph | 0 mi N of Backbone State Park | Wind gusts estimated to be 70 mph blew down some 1 foot diameter tree limbs in Backbone State Park about 3 miles north of Dundee, IA around 615 pm April 6. |
| 2010-04-06 18:38 | Hail | 1.75" golf ball | 0 mi N of Delhi | Golf ball sized hail fell in Delhi, IA around 738 pm April 6. The hail was covering much of the ground. |
| 2010-04-06 18:41 | Hail | 1" quarter | 5.62 mi N of Sand Spg | Quarter sized hail fell about 2 miles west of Worthington, IA at 741 pm April 6. |
| 2010-04-05 17:48 | Hail | 0.88" nickel | 1.72 mi NE of Robinson | Non-severe hail (<1.0) fell about 4 miles west of Ryan, IA at 648 pm April 5. The hail covered the ground. |
| 2010-04-05 21:07 | Wind | 56 kt 64 mph | 2.58 mi SE of Robinson | Wind gusts estimated to be 65 mph damaged or destroyed an unoccupied mobile home about 5 miles southwest of Ryan, IA around 1007 pm April 5. |
| 2010-04-05 21:22 | Wind | 56 kt 64 mph | 3.36 mi ESE of Buck Creek | Wind gusts estimated to be 65 mph damaged the roof of a barn about 3 miles southwest of Hopkinton, IA at 1022 pm April 5. |
Worst storm days in Delaware County
| Date | Reports that day | Largest hail | Peak gust |
|---|---|---|---|
| 2026-04-14 | 6 | 1" (quarter) | 81 mph |
| 2021-08-24 | 5 | 1.75" (golf ball) | 81 mph |
| 2014-06-16 | 5 | 1" (quarter) | 70 mph |
| 2017-05-17 | 5 | — | 89 mph |
| 2013-05-29 | 4 | 1" (quarter) | 58 mph |
| 2013-04-29 | 4 | 1" (quarter) | — |
| 2012-07-25 | 4 | 0.75" (penny) | 70 mph |
| 2022-07-23 | 4 | — | 70 mph |
| 2019-06-30 | 4 | — | 90 mph |
| 2013-05-19 | 4 | — | 60 mph |
Reports by year
Report counts are driven partly by how many people were around to report a storm, so recent years tend to look busier than the early 2010s. Treat the trend as a reporting trend, not purely a weather trend.
When does hail hit Delaware County?
Across 17 years of records, June produced the most reports (32), followed by the months either side of it. Monthly totals:
| Month | Reports | Share |
|---|---|---|
| January | 1 | 0.7% |
| February | 0 | 0.0% |
| March | 4 | 2.9% |
| April | 24 | 17.1% |
| May | 21 | 15.0% |
| June | 32 | 22.9% |
| July | 31 | 22.1% |
| August | 17 | 12.1% |
| September | 5 | 3.6% |
| October | 0 | 0.0% |
| November | 3 | 2.1% |
| December | 2 | 1.4% |
Nearby counties in Iowa
Polk County (645)Linn County (550)Scott County (434)Story County (328)Johnson County (295)Woodbury County (290)Dubuque County (272)Dallas County (268)Benton County (265)Warren County (255)Marion County (236)Buchanan County (226)
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About these numbers
Every row above is a report filed with the National Weather Service and archived in the NOAA NCEI Storm Events Database (FIPS 19055). Reports are eyewitness, trained-spotter and damage-survey observations, so they cluster near roads and towns and miss storms over empty country. Hail sizes are estimates. Damage figures are preliminary as filed and are never revised in this archive. Use this page for background, not for an insurance claim, a legal filing, or a roof assessment — for those, get the official record from NOAA directly.