Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 20, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 4, 1990, 11:07 PM MDT for Corson County, Dewey County, South Dakota. It was in force for 49 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
- Jun 4, 1990, 11:07 PM MDT (05:07 UTC)
- Expired
- Jun 4, 1990, 11:56 PM MDT
- In force
- 49 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
Counties Corson County, SD, 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 |
|---|---|---|---|
| Jun 4, 11:24 PM MDT | Hail 1.75 | 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
Aberdeen, SD (KHON), launched 00:00Z, 5.1 hours before the alert went out and 215 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
- 1653 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 156 m²/s²
- 0-3 km storm-relative helicity
- 256 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, Jun 4, 11:00 PM MDT, 7 minutes before
SDZ003-050600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 1200 AM CDT TUE JUN 5 1990 ...INTENSE THUNDERSTORMS FORMING IN NORTH CENTRAL SOUTH DAKOTA... AT 1055 PM MDT NATIONAL WEATHER SERVICE RADAR SHOWED AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN HAD FORMED NEAR ISABEL...50 MILES SOUTHWEST OF MOBRIDGE MOVING EAST AT 25 MPH. THIS STORM CAN PRODUCE STRONG WIND...HEAVY RAIN...AND SMALL HAIL. IF YOU LIVE IN NORTHERN DEWEY CO%UNTY OR SOUTHERN CORSON COUNTY OF NORTH CENTRAL SOUTH DAKOTA...YOU SHOULD BE ALERT TO THE WEATHER AND LISTEN FOR LATER STATEMENTS. KEEFE
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 11:49 PM MDT | Severe Thunderstorm Warning | ABR | Walworth | 26 min |
| Jun 5, 12:45 AM MDT | Severe Thunderstorm Warning | ABR | Edmunds | 30 min |
| Jun 5, 1:01 AM MDT | Severe Thunderstorm Warning | ABR | Brown, Spink | 59 min |
| Jun 5, 2:01 AM MDT | Severe Thunderstorm Warning | ABR | Codington | 44 min |
| Jun 5, 2:29 AM MDT | Severe Thunderstorm Warning | ABR | Deuel | 61 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.