Hail in South Dakota, May 11, 2022

Name: Hail in South Dakota, May 11, 2022
Start: 2022-05-11T22:25
End: 2022-05-11T22:45
Location: South Dakota

May 11, 2022 · NWS UNR · 2 events in 1 county or zone

A severe thunderstorm developed over Tripp County, producing large hail over central and northeastern parts of the county.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 2

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS UNR wrote it up.

A severe thunderstorm developed over Tripp County, producing large hail over central and northeastern parts of the county.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Rapid City, SD wrote its last area forecast discussion before the first event at May 11, 5:43 PM CST, 4 hours 42 minutes earlier.

Area forecast discussion, May 11, 5:43 PM CST, 4 hours 42 minutes before

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Hazardous weather outlook, May 11, 4:50 AM CST, 17 hours 35 minutes before

Hazardous Weather Outlook
National Weather Service Rapid City SD
450 AM MDT Wed May 11 2022

SDZ001-002-012>014-024>032-041-046-047-049-072>074-WYZ054>058-071-
121300-
Harding-Perkins-Butte-Northern Meade Co Plains-Ziebach-
Northern Black Hills-Northern Foot Hills-Rapid City-
Southern Foot Hills-Central Black Hills-Southern Black Hills-
Custer Co Plains-Pennington Co Plains-Haakon-Fall River-Mellette-
Todd-Tripp-Sturgis/Piedmont Foot Hills-Southern Meade Co Plains-
Hermosa Foot Hills-Northern Campbell-Southern Campbell-
Western Crook-Wyoming Black Hills-Weston-Northeastern Crook-
450 AM MDT Wed May 11 2022 /550 AM CDT Wed May 11 2022/

This Hazardous Weather Outlook is for portions of western South
Dakota and northeastern Wyoming.

.DAY ONE...Today and Tonight

Chances for showers and thunderstorms will increase late today and
especially tonight. There is a marginal risk (level 1 of 5) of
severe thunderstorms late today and tonight, meaning that isolated
severe storms are possible. The main threats from any severe
storms will be large hail and strong wind gusts.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Chances for showers and thunderstorms will continue on Thursday.
Severe thunderstorms are not expected at this time. There is a
marginal risk (level 1 of 5) of severe thunderstorms across far
south central South Dakota in the afternoon.

Gusty westerly winds are possible Thursday and Friday as the
system moves over and eventually northeast of the region. At this
time, some gusts of 40 to 50 mph look possible across much of the
plains.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

SDZ042>044-121300-
Oglala Lakota-Jackson-Bennett-
450 AM MDT Wed May 11 2022

This Hazardous Weather Outlook is for portions of southwestern
South Dakota.

.DAY ONE...Today and Tonight

Chances for showers and thunderstorms will increase tonight. An
isolated strong storm is possible with hail and gusty winds.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Chances for showers and thunderstorms will continue on Thursday.
Severe thunderstorms are not expected at this time.

Gusty westerly winds are possible Thursday and Friday as the
system moves over and eventually northeast of the region. At this
time, some gusts of 40 to 50 mph look possible across parts of
the area.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

In the hours before

Special weather statement, May 11, 10:25 PM CST, 0 minutes before

Special Weather Statement
National Weather Service Rapid City SD
1125 PM CDT Wed May 11 2022

SDZ049-120515-
Tripp SD-
1125 PM CDT Wed May 11 2022

...A strong thunderstorm will impact portions of northeastern Tripp
County through 1215 AM CDT...

At 1125 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles northeast of Winner, moving north at 35 mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

This strong thunderstorm will be near...
  Hamill around 1145 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4335 9986 4370 9982 4371 9975 4373 9976
      4375 9975 4372 9973 4376 9969 4373 9967
      4377 9966 4374 9962 4350 9962 4350 9954
      4347 9953 4331 9954
TIME...MOT...LOC 0425Z 190DEG 31KT 4344 9972

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH

Calderon

The radar

The North Platte radar (KLNX), 167 km away, was scanning. The volume nearest the first event began at 04:23 UTC.

Open the radar archive at this moment

Event by event

2 hail. Local standard time, as filed.

Hail, Tripp

When: May 11, 10:25 PM CST
Where: Tripp County, Winner
Measured: 1.5 in hail
Reported by: Public
Coordinates: 43.370, -99.870

Hail, Tripp

When: May 11, 10:45 PM CST
Where: Tripp County, 2 mi SW of Hamill
Measured: 1 in hail
Reported by: Public
Coordinates: 43.580, -99.708

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in South Dakota in 2022 Every state in 2022 This day in weather history Warnings in South Dakota, May 2022

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1015809, 1015808.