Hail and Damaging Winds in South Dakota, July 23, 2005

Name: Hail and Damaging Winds in South Dakota, July 23, 2005
Start: 2005-07-23T05:00
End: 2005-07-23T06:15
Location: South Dakota

July 23, 2005 · NWS ABR · 6 events in 3 counties and zones

5 thunderstorm wind, 1 hail, as filed by the National Weather Service.

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: 4
Property damage: None recorded
Crop damage: None recorded
Events: 6

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 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 Aberdeen, SD wrote its last area forecast discussion before the first event at Jul 23, 2:55 AM CST, 2 hours 5 minutes earlier.

Area forecast discussion, Jul 23, 2:55 AM CST, 2 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ABERDEEN SD
355 AM CDT SAT JUL 23 2005

.SHORT TERM...TODAY THROUGH MONDAY NIGHT
STRONG CONVECTION GOING EARLY THIS MRNG IN SC ND ON THE NOSE OF THE
LLJ WITH VERY WARM MID LEVEL TEMPS. ALSO...SOME CONVECTION IN NC SD.
EXPECT THIS CONVECTION TO CONTINUE TO MOVE EAST THROUGH THE MORNING
HOURS. OTHERWISE...IT SHOULD BE A HOT DAY ACROSS THE CWA AS VERY
WARM LL TEMPS ADVECT INTO THE AREA FROM THE SW. WITH DWPTS IN THE
LOW TO MID 70S AND TEMPS WARMING UP...HEAT INDICES SHOULD REACH 105
OR GREATER THIS AFTN AND EARLY EVENING IN C AND NE SD AND WC MN. THE
DWPTS WILL BE FALLING THIS AFTN IN C SD AS WINDS BECOME SW AND W BUT
THE TEMPS WILL CONTINUE TO RISE TO AROUND 105. THUS...WILL GO WITH A
HEAT ADVISORY FOR MUCH OF THE CWA FOR THIS AFTN AND EARLY EVENING.
IT SHOULD BE LESS HUMID AND COOLER ON SUNDAY WITH THE AREA STILL
CAPPED FOR CONVECTION. THE MDLS AGREE REALLY WELL THAT A S/W WILL BE
AFFECTING THE CWA SUNDAY NIGHT THROUGH MONDAY NIGHT WITH A DECENT
COLD FRONT MOVING THROUGH. THE MDLS ALSO SHOW THE MID LEVELS COOLING
OFF ALONG WITH SOME QPF FOR SUN NIGHT THROUGH MON NIGHT. STAYED WITH
THE 30 POPS FOR TSRAS ACROSS THE CWA FOR THIS TIME PERIOD WITH 40
POPS ALONG THE S CWA. MONDAY SHOULD AGAIN BE COOLER THAN SUNDAY WITH
HIGHS MOSTLY IN THE 80S.

.LONG TERM...TUESDAY THROUGH FRIDAY
MODELS IN GOOD AGREEMENT FOR THE START OF EXTENDED PERIOD. SURFACE
HIGH PRESSURE AND DRIER AIRMASS LOOK TO BUILD INTO THE REGION IN
THE WAKE OF DEPARTING SHORT WAVE TROUGH. COLD AIR ADVECTION WILL
KEEP TEMPERATURES BELOW NORMAL FOR TUESDAY AND WEDNESDAY AS H85
TEMPERATURES FALL TO THE LOW TO MID TEENS CELSIUS. CWA REMAINS UNDER
ZONAL FLOW THROUGH THE REST OF THE EXTENDED WITH LOW LEVEL RETURN
FLOW AND WARM AIR ADVECTION BEGINNING WEDNESDAY NIGHT INTO THURSDAY
IN RESPONSE TO NEXT APPROACHING SHORT WAVE. UNCERTAINTY LIES IN THE
TIMING OF THIS NEXT TROUGH FEATURE HOWEVER. GFS IN FAIR AGREEMENT
WITH ECMWF IN BRINGING SURFACE TROUGH THROUGH FORECAST AREA ON
FRIDAY...WHILE DGEX BRINGS IT THROUGH ON THURSDAY. WITH H7 TEMPS OF
+10 TO +12C IN PLACE OVER CWA AND LOW CONFIDENCE IN THE TIMING OF
THE SYSTEM...DECIDED TO LEAVE EXTENDED GRIDS DRY AT THIS TIME.

&&
.ABR WATCHES/WARNINGS/ADVISORIES...
SD...HEAT ADVISORY...NOON THROUGH 7 PM CDT...C AND NE SD
MN...HEAT ADVISORY...NOON THROUGH 7 PM CDT...BIG STONE AND TRAVERSE.
&&

MOHR/LILES

The radar

The Aberdeen radar (KABR), 19 km away, was scanning. The volume nearest the first event began at 11:01 UTC.

Open the radar archive at this moment

Event by event

5 thunderstorm wind, 1 hail. Local standard time, as filed.

Thunderstorm Wind, Brown

When: July 23, 5:00 AM CST
Where: Brown County, Columbia
Measured: 52 kt (60 mph) estimated gust
Reported by: OFFICIAL NWS OBS.
Coordinates: 45.617, -98.317

High winds downed several large branches in Columbia.

Hail, Brown

When: July 23, 5:05 AM CST
Where: Brown County, 5 mi E of Frederick
Measured: 0.75 in hail
Reported by: LAW ENFORCEMENT
Coordinates: 45.833, -98.417

Thunderstorm Wind, Marshall

When: July 23, 5:55 AM CST
Where: Marshall County, 6 mi S of Britton
Measured: 70 kt (81 mph) estimated gust
Reported by: LAW ENFORCEMENT
Coordinates: 45.717, -97.750

High winds blew a trailer with a pontoon boat on it off the road.

Thunderstorm Wind, Day

When: July 23, 6:05 AM CST
Where: Day County, 2 mi N of Roslyn
Measured: 52 kt (60 mph) estimated gust
Reported by: TRAINED SPOTTER
Coordinates: 45.533, -97.500

Large branches were downed by the high winds.

Thunderstorm Wind, Day

When: July 23, 6:10 AM CST
Where: Day County, 6 mi N of Waubay
Measured: 70 kt (81 mph) estimated gust
Injuries: 4 direct, 0 indirect
Reported by: EMERGENCY MANAGER
Coordinates: 45.417, -97.317

Eighty mph winds or higher destroyed a 14 by 40 foot trailer home at Enemy Swim Lake. The four occupants inside were not seriously injured. The winds also damaged the roofs of two other homes, damaged several boat lifts and docks, downed some power lines and poles, damaged the school, and downed many trees and branches.

Thunderstorm Wind, Marshall

When: July 23, 6:15 AM CST
Where: Marshall County, 11 mi S of Britton
Measured: 70 kt (81 mph) estimated gust
Reported by: EMERGENCY MANAGER
Coordinates: 45.633, -97.750

The top of a large silo was blown off and a garage was also blown down by the high winds.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
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 2005 Every state in 2005 This day in weather history Warnings in South Dakota, July 2005

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: 5467951, 5467956, 5467952, 5467953, 5467954, 5467955.