Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 97, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 18, 1990, 7:29 PM CDT for Spink County, South Dakota. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1990, 7:29 PM CDT (00:29 UTC)
- Expired
- Jul 18, 1990, 8:10 PM CDT
- In force
- 41 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
County Spink County, SD
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Aberdeen, SD (KHON), launched 00:00Z, 0.5 hours before the alert went out and 6 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
- 398 J/kg
- Mixed-layer CIN
- -334 J/kg
- Mixed-layer LCL
- 1369 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 329 m²/s²
- 0-3 km storm-relative helicity
- 643 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 26.7
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 18, 1:50 PM CDT, 5 hours 39 minutes before
SDZ004-181950- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 150 PM CDT WED JUL 18 1990 AT 145 PM CDT RADAR INDICATED A THUNDERSTORM IN NORTHERN FAULK COUNTY SOUTHWEST OF ABERDEEN. MOVEMENT OF THE THUNDERSTORM WAS EAST AT 30 MPH. THE FAULK COUNTY SHERIFF REPORTED PEA SIZED HAIL IN FAULKTON AT 130 PM. THESE STORMS CAN BE EXPECTED TO PRODUCE HEAVY RAIN...STRONG WINDS... SMALL HAIL...DANGEROUS LIGHTNING AS THEY CONTINUE TO MOVE A/CROSS NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA. RESIDENTS IN THE PATHS OF THESE STORMS SHOULD BE PREPARED TO TAKE SHELTER AND TAKE WHATEVER ACTION IS NECESSARY TO PROCTECT THEMSELVES. ADDISON
Special weather statement, Jul 18, 3:40 PM CDT, 3 hours 49 minutes before
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</html>Local storm report, Jul 18, 4:23 PM CDT, 3 hours 6 minutes before
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</html>Special weather statement, Jul 18, 5:24 PM CDT, 2 hours 5 minutes before
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</html>Special weather statement, Jul 18, 6:14 PM CDT, 1 hour 15 minutes before
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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; the sounding from the Mesonet's radiosonde archive.