Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 12, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 1, 1990, 5:34 PM CDT for McPherson County, South Dakota. It was in force for 56 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 1, 1990, 5:34 PM CDT (22:34 UTC)
- Expired
- Jun 1, 1990, 6:30 PM CDT
- In force
- 56 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
County McPherson 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 1, 6:00 PM CDT | Hail 0.75 | Mcpherson, 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, 10.6 hours before the alert went out and 116 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
- 365 J/kg
- Mixed-layer CIN
- -181 J/kg
- Mixed-layer LCL
- 733 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 168 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.6
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 1, 2:50 PM CDT, 2 hours 44 minutes before
SDZ003-012100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 250 PM CDT FRI JUN 1 1990 ...TORNADO WATCH FOR CENTRAL SOUTH DAKOTA UNTIL 10 PM CDT... AT 245 PM CDT NATIONAL WEATHER SERVICE RADAR INDICATED AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN HAD FORMED 50 MILES SOUTHWEST OF MOBRIDGE SOUTH DAKOTA IN SOUTHERN DEWEY COUNTY AND WAS MOVING NORTH AT 15 MPH. THIS STORM CAN PRODUCE HEAVY RAIN...SMALL HAIL..AND DANGEROUS LIGHTNI7NG. CAMPERS AND BOATERS SHOULD BE AWARE OF THIS STORM AND BE PREPARED TO TAKE ACTION TO ENSURE SAFETY. KEEFE
Special weather statement, Jun 1, 4:13 PM CDT, 1 hour 21 minutes before
SDZ003-004-012200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 414 PM CDT FRI JUN 1 1990 ...TORNADO WATCH FOR CENTRAL SOUTH DAKOTA UNTIL 10 PM CDT... AT 410 PM CDT RADAR SHOWED AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN NEAR LOWRY...30 MILES SOUTHEAST OF MOBRIDGE...MOVING NORTHEAST AT 20 MPH. AS THIS STORM HAS PRODUCED SMALL HAIL...HEAVY RAIN...AND GUSTY WIND. IF YOU LIVE IN NORTHEAST SOUTH DAKOTA YOU SGOULD BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. KEEFE
Special weather statement, Jun 1, 5:10 PM CDT, 24 minutes before
SDZ004-012300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 510 PM CDT FRI JUN 1 1990 ...TORNADO WATCH FOR CENTRAL SOUTH DAKOTA UNTIL 10 PM CDT... AT 505 PM CDT RADAR SHOWED AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN NEAR BOWDLE...60 MILES WEST OF ABERDEEN...MOVING NORTHEAST AT 20 MPH. AS THIS STORM HAS PRODUCED SMALL HAIL...HEAVY RAIN...AND GUSTY WIND. IF YOU LIVE IN EDMUNDS COUNTY SOUTH DAKOTA YOU SHOULD BE ALERT TO RAP&IDLY CHANGING WEATHER CONDITIONS AND BE PREPARED TO SEEK SHELTER IF NECCESSARY. KEEFE
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 4:57 PM CDT | Tornado Warning | ABR | Corson, Dewey | 33 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.