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Hail in Delaware County, Iowa
152 hail events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Hail.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
NCEI records 152 hail events in Delaware County, Iowa, between 1950 and 2026, spread over 42 years.
April is the busiest month, with 36 of the recorded events. The last 20 years account for 86 events against 52 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1% of the 15,950 hail events recorded in Iowa; its 26.3 per 100 square miles compares with 28.6 statewide.
31 of the hail reports with a recorded size were golf-ball size (1.75 inches) or larger; the largest recorded stone was 4.50 inches (grapefruit size).
Compared with Iowa
| Measure | Delaware County | Iowa | US |
|---|---|---|---|
| Hail events since 1950 | 152 | 15,950 | 424,356 |
| Per 100 square miles | 26.3 | 28.6 | 12.0 |
| Per 10,000 residents | 86.8 | 50.0 | 12.8 |
| Deaths recorded | 0 | 4 | 29 |
| Busiest month | April | June | May |
By year
Seasonality
1Feb
2Mar
3Apr
36May
28Jun
28Jul
34Aug
14Sep
4Oct
2Nov
0Dec
0
Magnitude distribution
NWS hail-size descriptors
- under 1 in
- pea to quarter
- 1–1.74 in
- quarter to golf ball
- 1.75–2.74 in
- golf ball to baseball
- 2.75–3.99 in
- baseball to softball
- 4 in and larger
- softball and larger
Hail size in inches as recorded by NCEI; events without a size are not binned.
Recorded events
All 152 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 17 Apr 2026 | Hail | 1.25 in | — | — | — | — | County |
| 14 Apr 2026 | Hail | 1.00 in | — | — | — | — | County |
| 14 Apr 2026 | Hail | 1.00 in | — | — | — | — | County |
| 3 Jul 2025 | Hail | 1.00 in | — | — | — | — | County |
| 3 Jul 2025 | Hail | 1.00 in | — | — | — | — | County |
| 19 Apr 2023 | Hail | 1.00 in | — | — | — | — | County |
| 4 Apr 2023 | Hail | 1.00 in | — | — | — | — | County |
| 15 Jun 2022 | Hail | 1.00 in | — | — | — | — | County |
| 24 Aug 2021 | Hail | 1.75 in | — | — | — | — | County |
| 1 Sep 2018 | Hail | 0.75 in | — | — | — | — | County |
| 25 May 2018 | Hail | 0.75 in | — | — | — | — | County |
| 5 Jul 2017 | Hail | 1.00 in | — | — | — | — | County |
| 29 Jun 2015 | Hail | 0.75 in | — | — | — | — | County |
| 20 Jun 2015 | Hail | 1.00 in | — | — | — | — | County |
| 16 Jun 2014 | Hail | 1.00 in | — | — | — | — | County |
| 21 Jun 2013 | Hail | 0.75 in | — | — | — | — | County |
| 21 Jun 2013 | Hail | 1.00 in | — | — | — | — | County |
| 29 May 2013 | Hail | 0.75 in | — | — | — | — | County |
| 29 May 2013 | Hail | 1.00 in | — | — | — | — | County |
| 29 May 2013 | Hail | 0.88 in | — | — | — | — | County |
| 30 Apr 2013 | Hail | 0.88 in | — | — | — | — | County |
| 29 Apr 2013 | Hail | 1.00 in | — | — | — | — | County |
| 29 Apr 2013 | Hail | 0.75 in | — | — | — | — | County |
| 29 Apr 2013 | Hail | 0.88 in | — | — | — | — | County |
| 29 Apr 2013 | Hail | 0.88 in | — | — | — | — | County |
| 28 Jan 2013 | Hail | 0.75 in | — | — | — | — | County |
| 25 Jul 2012 | Hail | 0.75 in | — | — | — | — | County |
| 3 Apr 2011 | Hail | 1.00 in | — | — | — | — | County |
| 3 Apr 2011 | Hail | 1.00 in | — | — | — | — | County |
| 12 May 2010 | Hail | 0.75 in | — | — | — | — | County |
| 12 May 2010 | Hail | 1.00 in | — | — | — | — | County |
| 12 May 2010 | Hail | 0.88 in | — | — | — | — | County |
| 6 Apr 2010 | Hail | 1.75 in | — | — | — | — | County |
| 6 Apr 2010 | Hail | 1.00 in | — | — | — | — | County |
| 5 Apr 2010 | Hail | 0.88 in | — | — | — | — | County |
| 9 Aug 2009 | Hail | 1.00 in | — | — | — | — | County |
| 9 Aug 2009 | Hail | 1.00 in | — | — | — | — | County |
| 9 Aug 2009 | Hail | 0.75 in | — | — | — | — | County |
| 24 Jul 2009 | Hail | 1.75 in | $500 | — | — | — | County |
| 24 Jul 2009 | Hail | 1.75 in | — | — | — | — | County |
| 24 Jul 2009 | Hail | 1.75 in | $250K | — | — | — | County |
| 24 Jul 2009 | Hail | 2.50 in | $250 | — | — | — | County |
| 24 Jul 2009 | Hail | 1.00 in | — | — | — | — | County |
| 24 Jul 2009 | Hail | 1.00 in | — | — | — | — | County |
| 24 Jul 2009 | Hail | 1.50 in | — | — | — | — | County |
| 24 Jul 2009 | Hail | 1.75 in | — | — | — | — | County |
| 24 Jul 2009 | Hail | 1.00 in | — | — | — | — | County |
| 24 Jul 2009 | Hail | 2.50 in | — | — | — | — | County |
| 24 Jul 2009 | Hail | 1.75 in | $100K | — | — | — | County |
| 24 Jul 2009 | Hail | 1.75 in | $25K | — | — | — | County |
| 26 Apr 2009 | Hail | 0.75 in | — | — | — | — | County |
| 26 Apr 2009 | Hail | 1.00 in | — | — | — | — | County |
| 26 Feb 2009 | Hail | 0.88 in | — | — | — | — | County |
| 26 Feb 2009 | Hail | 0.88 in | — | — | — | — | County |
| 4 Aug 2008 | Hail | 1.00 in | — | — | — | — | County |
| 3 Aug 2008 | Hail | 1.75 in | — | — | — | — | County |
| 3 Aug 2008 | Hail | 1.50 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 1.00 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 1.25 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 1.25 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 1.00 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 0.88 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 1.00 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 1.00 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 0.88 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 0.75 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 0.75 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 1.75 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 0.75 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 1.25 in | — | — | — | — | County |
| 10 Jul 2008 | Hail | 0.88 in | — | — | — | — | County |
| 20 Jun 2008 | Hail | 0.75 in | — | — | — | — | County |
| 8 Jun 2008 | Hail | 0.75 in | — | — | — | — | County |
| 25 May 2008 | Hail | 1.75 in | — | — | — | — | County |
| 25 May 2008 | Hail | 1.00 in | — | — | — | — | County |
| 25 Apr 2008 | Hail | 0.75 in | — | — | — | — | County |
| 25 Apr 2008 | Hail | 1.75 in | — | — | — | — | County |
| 25 Apr 2008 | Hail | 1.00 in | — | — | — | — | County |
| 25 Apr 2008 | Hail | 0.88 in | — | — | — | — | County |
| 27 Aug 2007 | Hail | 0.75 in | — | — | — | — | County |
| 27 Aug 2007 | Hail | 1.00 in | — | — | — | — | County |
| 17 Jul 2007 | Hail | 1.00 in | — | — | — | — | County |
| 2 Apr 2007 | Hail | 0.88 in | — | — | — | — | County |
| 2 Apr 2007 | Hail | 1.00 in | — | — | — | — | County |
| 31 Mar 2007 | Hail | 0.88 in | — | — | — | — | County |
| 31 Mar 2007 | Hail | 0.88 in | — | — | — | — | County |
| 17 Jul 2006 | Hail | 0.88 in | — | $3K | — | — | County |
| 13 Apr 2006 | Hail | 1.00 in | $3K | — | — | — | County |
| 13 Apr 2006 | Hail | 1.00 in | $1K | — | — | — | County |
| 13 Apr 2006 | Hail | 1.00 in | $2K | — | — | — | County |
| 13 Apr 2006 | Hail | 1.00 in | $2K | — | — | — | County |
| 4 Jun 2005 | Hail | 0.75 in | — | $2K | — | — | County |
| 4 Jun 2005 | Hail | 1.75 in | $10K | — | — | — | County |
| 30 May 2004 | Hail | 0.75 in | — | $2K | — | — | County |
| 17 May 2004 | Hail | 0.75 in | — | $5K | — | — | County |
| 7 May 2004 | Hail | 0.88 in | — | $5K | — | — | County |
| 7 May 2004 | Hail | 0.88 in | — | $5K | — | — | County |
| 10 May 2003 | Hail | 0.88 in | — | — | — | — | County |
| 4 Jun 2002 | Hail | 0.88 in | — | — | — | — | County |
| 4 Jun 2002 | Hail | 0.88 in | — | — | — | — | County |
| 4 Jun 2002 | Hail | 0.88 in | — | — | — | — | County |
| 4 Jun 2002 | Hail | 1.00 in | — | — | — | — | County |
| 4 Jun 2002 | Hail | 1.00 in | — | — | — | — | County |
| 10 May 2001 | Hail | 1.00 in | — | — | — | — | County |
| 8 Apr 2001 | Hail | 1.00 in | — | — | — | — | County |
| 8 Apr 2001 | Hail | 1.00 in | — | — | — | — | County |
| 5 Apr 2001 | Hail | 0.88 in | — | — | — | — | County |
| 31 May 2000 | Hail | 0.75 in | — | — | — | — | County |
| 18 May 2000 | Hail | 1.00 in | — | — | — | — | County |
| 18 May 2000 | Hail | 1.00 in | — | — | — | — | County |
| 17 May 2000 | Hail | 1.75 in | — | — | — | — | County |
| 17 May 2000 | Hail | 1.25 in | — | — | — | — | County |
| 17 May 2000 | Hail | 1.75 in | $4.0M | $2K | — | — | County |
| 17 May 2000 | Hail | 1.25 in | — | — | — | — | County |
| 11 May 2000 | Hail | 1.75 in | — | — | — | — | County |
| 11 May 2000 | Hail | 1.75 in | — | — | — | — | County |
| 11 May 2000 | Hail | 1.75 in | — | — | — | — | County |
| 23 Aug 1999 | Hail | 0.75 in | — | — | — | — | County |
| 28 Jun 1998 | Hail | 0.75 in | — | — | — | — | County |
| 27 Jun 1998 | Hail | 0.75 in | — | — | — | — | County |
| 27 Jun 1998 | Hail | 0.75 in | — | — | — | — | County |
| 18 Jun 1998 | Hail | 4.50 in | $8K | — | — | — | County |
| 15 Apr 1998 | Hail | 0.80 in | — | — | — | — | County |
| 30 Mar 1998 | Hail | 1.00 in | — | — | — | — | County |
| 21 Jun 1997 | Hail | 1.25 in | — | — | — | — | County |
| 18 May 1997 | Hail | 4.50 in | — | — | — | — | County |
| 25 Apr 1994 | Hail | 0.75 in | $50K | — | — | — | County |
| 14 Apr 1994 | Hail | 1.00 in | $5K | — | — | — | County |
| 14 Apr 1994 | Hail | 0.75 in | $5K | — | — | — | County |
| 23 Jun 1992 | Hail | 1.00 in | — | — | — | — | County |
| 19 Jun 1992 | Hail | 1.00 in | — | — | — | — | County |
| 10 Apr 1992 | Hail | 0.75 in | — | — | — | — | County |
| 7 Jul 1991 | Hail | 1.75 in | — | — | — | — | County |
| 14 Jun 1991 | Hail | 0.75 in | — | — | — | — | County |
| 2 Jun 1990 | Hail | 1.00 in | — | — | — | — | County |
| 4 Aug 1989 | Hail | 1.75 in | — | — | — | — | County |
| 4 Aug 1989 | Hail | 1.75 in | — | — | — | — | County |
| 12 Jun 1989 | Hail | 0.75 in | — | — | — | — | County |
| 24 Aug 1985 | Hail | 1.00 in | — | — | — | — | County |
| 4 Sep 1984 | Hail | 0.75 in | — | — | — | — | County |
| 2 Jun 1980 | Hail | 1.75 in | — | — | — | — | County |
| 16 May 1977 | Hail | 1.75 in | — | — | — | — | County |
| 12 Aug 1976 | Hail | 1.75 in | — | — | — | — | County |
| 21 Sep 1973 | Hail | 1.00 in | — | — | — | — | County |
| 21 Sep 1973 | Hail | 1.50 in | — | — | — | — | County |
| 21 Apr 1973 | Hail | 1.00 in | — | — | — | — | County |
| 10 Oct 1972 | Hail | 2.50 in | — | — | — | — | County |
| 10 Oct 1972 | Hail | 1.00 in | — | — | — | — | County |
| 24 Jun 1971 | Hail | 0.75 in | — | — | — | — | County |
| 4 Jun 1969 | Hail | 1.00 in | — | — | — | — | County |
| 4 May 1964 | Hail | 2.00 in | — | — | — | — | County |
| 15 Jul 1961 | Hail | 3.00 in | — | — | — | — | County |
Questions and answers
How many hail events has Delaware County had?
152 events in the NCEI Storm Events record between 1950 and 2026. Reporting of hail became far more complete after 1996, so early decades undercount.
When was the last recorded hail event in Delaware County?
17 Apr 2026 (Hail, 1.25 in). Records reach NCEI about 120 days after the month ends.
What was the most damaging hail event recorded in Delaware County?
The hail of 17 May 2000, with property damage estimated by NCEI at $4.0M and crop damage at $2K.
How does Delaware County compare with Iowa for hail?
26.3 events per 100 square miles against 28.6 statewide; the county holds 152 of the state's 15,950 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Hail hub and the county page.