Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 99, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 24, 1990, 7:21 PM MDT for Dewey County, South Dakota. It was in force for 69 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 24, 1990, 7:21 PM MDT (01:21 UTC)
- Expired
- Jul 24, 1990, 8:30 PM MDT
- In force
- 69 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
County Dewey County, SD
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 24, 7:25 PM MDT | Thunderstorm Wind 52 | Dewey, SD |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 1.4 hours before the alert went out and 180 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 0 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 24, 5:21 PM MDT, 2 hours before
SDZ002-003-004-005-011-DDHHMM SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 620 PM CDT TUE JUL 24 1990 AT 615 PM CDT RADAR INDICATED A THUNDERSTORM IN CENTRAL DEWEY COUNTY NEAR RIDGEVIE W...OR 40 MILES SOUTHWEST OF MOBRIDGE. MOVEMENT WAS STATIONARY. THIS STORM CAN PRODUCE SMALL HAIL...STRONG WINDS...AND DANGEROUS LIGHT/ NING. LISTEN TO THE RADIO FOR FURTHER DEVELOPMENTS. ADDISON
Local storm report, Jul 24, 5:52 PM MDT, 1 hour 29 minutes before
STORM REPORT NATIONAL WEATHER SERVICE ABERDEEN SD 650 PM CDT TUE JUL 24 1990 STORM DATA FOR TUE JUL 24 1990 TIME COUNTY..LOCATION CHARACTER OF STORM..DAMAGE .....................Y.................................................. 445 PM MDT DEWEY...GLENCROSS GOLFBALL SIZE HAIL...POLICE. STUDNICKA
Special weather statement, Jul 24, 6:04 PM MDT, 1 hour 17 minutes before
SDZ002-003-004-005-011-250100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 700 PM CDT TUE JUL 24 1990 AT 655 PM CDT THE SEVERE THUNDERSTORM OVER SOUTHEAST CORSON COUNTY IN NORTH CENTRAL SOUTH DAKOTA HAS BECOME WEAKER AND IS PRODUCING HEAVY RAIN ALONG WITH SOME HAIL OVER THAT AREA SOUTHWEST OF MOBRIDGE. ADDITIONAL THUNDERSTORM ACTIVITY IS BEING INDICATED OVER EXTREME SOUTHERN DEWEY COUNTY NEAR THE MISSOURI AND CHEYENNE RIVER INTERSECTION ABOUT 35 MILES NORTHWEST OF PIERRE MOVING NORTHEAST AT 5 MPH. AT 700 PM CDT CONDITIONS ACROSS THE NORTH CENTRAL PART OF SOUTH DAKOTA IS MOSTLY CLOUDY WITH OLNL PRECIPITATION ALONG AND WEST OF THE RIVER. TEMPERATURES RANGE FROM THE UPPEhR 80 ON THE SPUTHERN PORTIONS OF THE OAHE TO THE LOWER 80S ACROSS THE REMAINING PORTIONS OF THE NORTHERN AREA. THE ONE EXCEPTION IS THAT UPPER 70S IS BEING REPORTED OVER THE NORTHEAST LAKES REGION. STUDNICKA
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 9:33 PM MDT | Severe Thunderstorm Warning | ABR | Dewey | 57 min |
| Jul 24, 9:42 PM MDT | Severe Thunderstorm Warning | ABR | Stanley | 48 min |
| Jul 24, 10:41 PM MDT | Severe Thunderstorm Warning | ABR | Dewey | 64 min |
| Jul 25, 5:55 PM MDT | Severe Thunderstorm Warning | ABR | Stanley, Sully | 65 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1990Every severe thunderstorm warning in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.