Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 61, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 27, 1990, 4:03 PM CDT for Brown County, Edmunds County, South Dakota. It was in force for 57 min. 3 reports 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 27, 1990, 4:03 PM CDT (21:03 UTC)
- Expired
- Jun 27, 1990, 5:00 PM CDT
- In force
- 57 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
Counties Brown County, SD, Edmunds 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 27, 4:25 PM CDT | Thunderstorm Wind 65 | Brown, SD | |
| Jun 27, 4:25 PM CDT | Thunderstorm Wind 52 | Edmunds, SD | |
| Jun 27, 4:53 PM CDT | Thunderstorm Wind 53 | Brown, 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 12:00Z, 9.1 hours before the alert went out and 74 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
- 568 J/kg
- Mixed-layer CIN
- -319 J/kg
- Mixed-layer LCL
- 1939 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 27, 3:18 PM CDT, 45 minutes before
SDZ004-005-272130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 320 PM CDT WED JUN 27 1990 AT 315 PM CDT RADAR INDICTED A THUNDERSTORM WITH VERY HEAVY RAIN HAD FORMED IN NORTHEAST SOUTH DAKOTA 80 MILES NORTHEAST OF ABERDEEN NEAR CLAIRE CITY IN ROBERTS COUNTY. THIS STORM WAS MOVING SOUTHEAST AT 25 MPH. IT CAN PRODUCE HEAVY RAIN...SMALL HAIL...AND STRONG WIND. THE VERY HOT...HUMID AND UNSTABLE AIR IS VERY FAVORABLE FOR THUNDERSTORM DEVELOPMENT IN NORTHEAST SOUTH DAKOTA THIS AFTERNOON SO YOU SHOULD STAY ALERT TO THE SKY 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 27, 4:57 PM CDT | Tornado Warning | ABR | Brown, Spink | 33 min |
| Jun 27, 5:28 PM CDT | Severe Thunderstorm Warning | ABR | Spink | 62 min |
| Jun 27, 5:36 PM CDT | Tornado Warning | ABR | Brown | 24 min |
| Jun 27, 5:45 PM CDT | Severe Thunderstorm Warning | ABR | Clark | 60 min |
| Jun 27, 6:30 PM CDT | Severe Thunderstorm Warning | ABR | Spink | 30 min |
| Jun 27, 6:47 PM CDT | Severe Thunderstorm Warning | ABR | Beadle | 58 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.