Hail events in Delaware County, Oklahoma The hail events on record, by date and by year

This page is a county record of past events and claims. It does not show the flood zone or the risk of an address. For the flood map of an address, use FEMA's address search (opens in a new tab).

NCEI has 261 hail events on record for Delaware County, Oklahoma, from 1955 through 30 Jun 2026.

The newest hail event on record is on 28 Apr 2026.

From 2016 through 2025, NCEI has 38 hail events on record for the county.

The NWS collects event reports from a variety of sources, which include (but are not limited to): county, state, and federal emergency management officials, local law enforcement officials, SKYWARN spotters, NWS damage surveys, newspaper clipping services, the insurance industry, and the general public, among others.
The National Weather Service reports property and crop damage estimates using available data at the time of event reporting. These values should therefore be considered broad estimates. Damage amounts are not adjusted for inflation.
The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on 2 Oct 2026.

Date of the data: NCEI storm events through 30 Jun 2026. Event types on this page: Hail.

Newest hail events on record

Apr 28 2026

Hail1.75 in, golf ball size

1 mile N of KANSAS. Damage estimate: $50 thousand

Apr 25 2026

Hail1.00 in, quarter size

4 miles N of GROVE

May 18 2025

Hail0.75 in, penny size

1 mile ENE of WEST SILOAM SPGS

Hail1.00 in, quarter size

1 mile NW of KANSAS

May 26 2024

Hail1.75 in, golf ball size

2 miles SE of COPELAND. Damage estimate: $40 thousand

May 8 2024

Hail1.00 in, quarter size

1 mile S of LEACH

Hail1.25 in, half dollar size

4 miles N of GROVE. Damage estimate: $25 thousand

Hail0.88 in, nickel size

4 miles E of ZENA

Hail0.88 in, nickel size

At JAY

Hail0.75 in, penny size

1 mile N of GROVE

Mar 14 2024

Hail2.00 in, hen egg size

5 miles SSW of EUCHA. Damage estimate: $15 thousand

Hail1.50 in, ping-pong ball size

3 miles SSW of JAY. Damage estimate: $15 thousand

Hail1.75 in, golf ball size

At JAY. Damage estimate: $30 thousand

Jan 11 2024

Hail0.75 in, penny size

2 miles ENE of WEST SILOAM SPGS

Oct 12 2022

Hail0.75 in, penny size

At JAY

May 15 2022

Hail1.50 in, ping-pong ball size

2 miles S of GROVE. Damage estimate: $25 thousand

Mar 6 2022

Hail0.75 in, penny size

2 miles NW of KANSAS

May 9 2021

Hail0.88 in, nickel size

2 miles NE of JAY

Jul 11 2020

Hail1.75 in, golf ball size

At GROVE. Damage estimate: $50 thousand

May 4 2020

Hail1.50 in, ping-pong ball size

3 miles W of JAY. Damage estimate: $25 thousand

Hail2.50 in, tennis ball size

3 miles WSW of JAY. Damage estimate: $30 thousand

Mar 27 2020

Hail2.50 in, tennis ball size

1 mile N of GROVE. Damage estimate: $250 thousand

Hail3.00 in, tea cup size

2 miles N of ZENA. Damage estimate: $50 thousand

Hail2.50 in, tennis ball size

At ZENA. Damage estimate: $50 thousand

Hail1.75 in, golf ball size

2 miles ESE of CLEORA. Damage estimate: $250 thousand

A place is the text of the NCEI record: a distance and a direction from a reference place. The site does not show a place text that names a private property or reads as a person. Hail size is in inches, with the object that NCEI names for that size.

Hail events by year

Hail events on record for Delaware County by year, 1950 to 2026
Decade	Year that ends in 0	Year that ends in 1	Year that ends in 2	Year that ends in 3	Year that ends in 4	Year that ends in 5	Year that ends in 6	Year that ends in 7	Year that ends in 8	Year that ends in 9	All
1950s	0	0	0	0	0	0	0	0	0	0	0
1960s	0	1	0	0	0	1	0	0	0	0	2
1970s	0	0	1	1	0	2	0	0	0	0	4
1980s	1	0	0	0	0	4	5	1	0	4	15
1990s	8	8	5	3	0	24	23	12	9	21	113
2000s	5	7	4	7	7	4	7	1	15	12	69
2010s	0	5	6	0	3	4	1	9	1	3	32
2020s	8	1	3	0	10	2	2 (part of the year)				26

A darker cell has a larger count. The number is in each cell.

Hail events are on record from 1955. The year 2026 has the events through 30 Jun 2026 only.

By month, all years

Jan4 events
Feb3 events
Mar54 events
Apr52 events
May75 events
Jun14 events
Jul13 events
Aug8 events
Sep8 events
Oct11 events
Nov7 events
Dec12 events

Magnitudes on record

Hail events on record for Delaware County by hail size
Hail size	Size in words	Events
under 1 in	pea to quarter	137
1 to 1.74 in	quarter to golf ball	74
1.75 to 2.74 in	golf ball to baseball	46
2.75 to 3.99 in	baseball to softball	4
4 in and larger	softball and larger	0

When listing hail size under Magnitude, e.g., 2.25 in., the hail size is given in inches and hundredths of inches. These values are assigned a size in inches from their appearance.

The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on 2 Oct 2026.

An event without a size in the record is not in this table.

Beside the other counties

Hail events on record: Delaware County beside the total of the counties of Oklahoma and of the United States
Measure	Delaware	All counties of Oklahoma	All counties of the United States
Hail events, 1955 to 2026	261	31,575	423,723
Events for each 100 square miles	35.4	46.0	12.0
Events for each 10,000 residents	63.7	79.2	12.8

The columns for the state and the United States total the counties. They count the events of each county in the same way as the county column. A forecast zone with another name than a county counts for the state only.

More hail events on record

Hail events on record for Delaware County, newest first, without the 25 newest events above
Date	Event type	Magnitude	Damage estimate	On record for
27 Mar 2020	Hail	1.00 in	$10 thousand	County
29 Oct 2019	Hail	1.25 in	$5 thousand	County
20 May 2019	Hail	0.88 in	none	County
30 Apr 2019	Hail	1.25 in	$10 thousand	County
21 Jul 2018	Hail	1.00 in	none	County
27 May 2017	Hail	1.25 in	$5 thousand	County
11 May 2017	Hail	1.00 in	none	County
11 May 2017	Hail	0.88 in	none	County
16 Apr 2017	Hail	1.50 in	$5 thousand	County
16 Apr 2017	Hail	1.00 in	none	County
9 Mar 2017	Hail	1.75 in	$5 thousand	County
9 Mar 2017	Hail	2.50 in	$25 thousand	County
9 Mar 2017	Hail	1.75 in	$5 thousand	County
9 Mar 2017	Hail	1.25 in	none	County
19 Oct 2016	Hail	1.00 in	none	County
25 Mar 2015	Hail	1.50 in	$5 thousand	County
25 Mar 2015	Hail	1.50 in	$5 thousand	County
25 Mar 2015	Hail	2.50 in	$20 thousand	County
25 Mar 2015	Hail	1.75 in	$10 thousand	County
2 Oct 2014	Hail	0.88 in	none	County
3 Apr 2014	Hail	0.88 in	none	County
3 Apr 2014	Hail	0.75 in	none	County
26 Sep 2012	Hail	2.00 in	$10 thousand	County
16 Aug 2012	Hail	0.75 in	none	County
12 Aug 2012	Hail	1.00 in	none	County
12 Aug 2012	Hail	1.00 in	none	County
29 May 2012	Hail	0.75 in	none	County
29 May 2012	Hail	1.00 in	none	County
24 May 2011	Hail	0.75 in	none	County
25 Apr 2011	Hail	1.25 in	none	County
22 Apr 2011	Hail	1.50 in	none	County
22 Apr 2011	Hail	1.25 in	$5 thousand	County
26 Mar 2011	Hail	1.00 in	none	County
21 Sep 2009	Hail	1.00 in	none	County
21 Sep 2009	Hail	0.88 in	none	County
20 Aug 2009	Hail	0.75 in	none	County
20 Jul 2009	Hail	0.88 in	none	County
20 Jul 2009	Hail	0.75 in	none	County
12 May 2009	Hail	0.75 in	none	County
8 May 2009	Hail	0.75 in	none	County
1 May 2009	Hail	1.75 in	$15 thousand	County
1 May 2009	Hail	0.75 in	none	County
1 May 2009	Hail	0.75 in	none	County
18 Apr 2009	Hail	0.88 in	none	County
9 Apr 2009	Hail	0.75 in	none	County
9 Dec 2008	Hail	0.88 in	none	County
21 Jun 2008	Hail	0.75 in	none	County
20 Jun 2008	Hail	0.88 in	none	County
15 Jun 2008	Hail	0.75 in	none	County
15 Jun 2008	Hail	1.00 in	none	County
1 Jun 2008	Hail	1.75 in	none	County
31 May 2008	Hail	0.75 in	none	County
7 May 2008	Hail	0.75 in	none	County
8 Apr 2008	Hail	0.75 in	none	County
8 Apr 2008	Hail	0.75 in	none	County
27 Mar 2008	Hail	1.25 in	none	County
27 Mar 2008	Hail	0.88 in	none	County
14 Mar 2008	Hail	0.88 in	none	County
7 Jan 2008	Hail	0.88 in	none	County
7 Jan 2008	Hail	0.75 in	none	County
1 Mar 2007	Hail	1.00 in	none	County
9 May 2006	Hail	0.88 in	none	County
9 May 2006	Hail	1.75 in	none	County
24 Apr 2006	Hail	1.00 in	none	County
24 Apr 2006	Hail	1.00 in	none	County
12 Mar 2006	Hail	0.88 in	none	County
11 Mar 2006	Hail	0.88 in	none	County
11 Mar 2006	Hail	1.75 in	$25 thousand	County
13 Jun 2005	Hail	1.00 in	none	County
28 Apr 2005	Hail	1.00 in	none	County
28 Apr 2005	Hail	0.75 in	none	County
21 Apr 2005	Hail	0.75 in	none	County
8 Jul 2004	Hail	0.75 in	none	County
2 Jun 2004	Hail	1.00 in	none	County
30 May 2004	Hail	0.88 in	none	County
13 May 2004	Hail	0.75 in	none	County
30 Apr 2004	Hail	1.75 in	none	County
17 Mar 2004	Hail	1.00 in	none	County
17 Mar 2004	Hail	0.75 in	none	County
13 Jul 2003	Hail	1.75 in	none	County
13 Jul 2003	Hail	1.00 in	none	County
13 May 2003	Hail	0.75 in	none	County
6 May 2003	Hail	1.00 in	none	County
6 May 2003	Hail	1.00 in	none	County
1 May 2003	Hail	1.75 in	none	County
1 May 2003	Hail	1.75 in	none	County
12 May 2002	Hail	1.00 in	none	County
12 May 2002	Hail	1.00 in	none	County
23 Apr 2002	Hail	0.75 in	none	County
23 Apr 2002	Hail	0.75 in	none	County
25 Aug 2001	Hail	1.00 in	none	County
15 Aug 2001	Hail	0.75 in	none	County
3 Jun 2001	Hail	1.00 in	none	County
3 Jun 2001	Hail	1.00 in	none	County
15 Apr 2001	Hail	0.75 in	none	County
4 Dec 1999	Hail	1.75 in	$20 thousand	County
5 Oct 1998	Hail	1.00 in	$4 thousand	County
10 Apr 1995	Hail	0.75 in	none	County
10 Apr 1995	Hail	0.75 in	none	County
10 Apr 1995	Hail	0.75 in	none	County
13 Sep 1993	Hail	0.75 in	none	County
2 May 1993	Hail	0.75 in	none	County
24 Apr 1993	Hail	1.00 in	none	County
31 Oct 1992	Hail	0.75 in	none	County
31 Oct 1992	Hail	0.75 in	none	County
30 Jul 1992	Hail	2.75 in	none	County
11 Apr 1992	Hail	0.75 in	none	County
11 Apr 1992	Hail	1.00 in	none	County
16 May 1991	Hail	0.88 in	none	County
16 May 1991	Hail	0.88 in	none	County
4 May 1991	Hail	1.75 in	none	County
4 May 1991	Hail	0.75 in	none	County
4 May 1991	Hail	1.75 in	none	County
4 May 1991	Hail	1.75 in	none	County
17 Apr 1991	Hail	0.75 in	none	County
21 Mar 1991	Hail	0.75 in	none	County
21 May 1990	Hail	0.75 in	none	County
20 May 1990	Hail	0.75 in	none	County
19 May 1990	Hail	0.75 in	none	County
19 May 1990	Hail	1.75 in	none	County
16 May 1990	Hail	0.75 in	none	County
15 May 1990	Hail	1.00 in	none	County
9 Apr 1990	Hail	0.75 in	none	County
9 Apr 1990	Hail	0.75 in	none	County
21 May 1989	Hail	1.75 in	none	County
21 May 1989	Hail	1.00 in	none	County
21 May 1989	Hail	1.75 in	none	County
15 May 1989	Hail	0.75 in	none	County
22 Mar 1987	Hail	0.75 in	none	County
7 Apr 1986	Hail	1.00 in	none	County
7 Apr 1986	Hail	1.00 in	none	County
7 Apr 1986	Hail	0.75 in	none	County
7 Apr 1986	Hail	1.75 in	none	County
7 Apr 1986	Hail	1.75 in	none	County
2 Jun 1985	Hail	0.75 in	none	County
30 Apr 1985	Hail	0.75 in	none	County
5 Apr 1985	Hail	0.75 in	none	County
4 Apr 1985	Hail	0.88 in	none	County
7 Apr 1980	Hail	1.75 in	none	County
6 Aug 1975	Hail	1.00 in	none	County
29 Apr 1975	Hail	1.75 in	none	County
26 May 1973	Hail	2.00 in	none	County
23 May 1972	Hail	2.75 in	none	County
3 Apr 1965	Hail	1.50 in	none	County
8 May 1961	Hail	3.00 in	none	County

The site keeps 170 of the 261 events for this page. It keeps the newest 120 events. It also keeps 80 events with the most damage, injuries or deaths. A damage figure is an estimate in the NCEI record.

Official channels

NCEI Storm Events Database (opens in a new tab)Search the full NCEI record by state, county and date.
National Weather Service: Tulsa, OK (opens in a new tab)The forecast office that issues the weather warnings for the county.
FEMA Flood Map Service Center: Search By Address (opens in a new tab)Search an address to see its flood map. This site has no flood-zone data.

These links open the pages of the agencies. The site checked the links on 2 Oct 2026.

Cite this page

County Hazards. "Hail events on record for Delaware County, Oklahoma". https://countyhazards.com/county/ok/delaware/hail/. Data: NOAA NCEI Storm Events Database through 30 Jun 2026. Page made on 2 Oct 2026.

Questions

Which month has the most hail events on record for Delaware County?: May has 75 of the 261 hail events on record from 1955 through 30 Jun 2026.
How many hail events are on record for Oklahoma?: NCEI has 31,601 hail events on record for Oklahoma from 1955 through 30 Jun 2026. That count has every forecast zone of the state.
How does Delaware County compare with the other counties of Oklahoma?: The counties of Oklahoma have 46.0 hail events for each 100 square miles. Delaware County has 35.4.
How large is the hail on record for Delaware County?: 50 hail events have a size of 1.75 inches or more. NCEI names 1.75 inches a golf ball.