Alert archive / South Dakota / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 33, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at May 18, 1996, 8:57 PM CDT for Clark County, South Dakota. It was in force for 48 min. 2 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
- May 18, 1996, 8:57 PM CDT (01:57 UTC)
- Expired
- May 18, 1996, 9:45 PM CDT
- In force
- 48 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
County Clark County, SD
The radar
The Aberdeen radar (KABR), 85 km from the middle of the area, began a volume at 02:01 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 18, 9:00 PM CDT | Hail 0.75 | Clark, SD | |
| May 18, 9:29 PM CDT | Tornado F0 | Willow Lake, 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.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 2.0 hours before the alert went out and 53 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
- 2021 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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, May 18, 3:20 PM CDT, 5 hours 37 minutes before
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</html>Special weather statement, May 18, 3:24 PM CDT, 5 hours 33 minutes before
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</html>Special weather statement, May 18, 8:32 PM CDT, 25 minutes before
SDZ008-011-018-035>037-045-048-051-190700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 832 PM CDT SAT MAY 18 1996 ...TORNADO WATCH FOR CENTRAL AND PARTS OF NORTHEAST SOUTH DAKOTA... ...TORNADO WATCH FOR PARTS OF WEST CENTRAL MINNESOTA... A TORNADO WATCH IS IN EFFECT THIS EVENING UNTIL 1 AM CDT FOR MUCH OF CENTRAL SOUTH DAKOTA...SECTIONS OF NORTHEAST SOUTH DAKOTA...AND PARTS OF WEST CENTRAL MINNESOTA. SOME COMMUNITIES INCLUDED IN THE WATCH ARE...REDFIELD..SISSETON... CLARK...PIERRE...MILBANK...MILLER...WATERTOWN...AND ORTONVILLE. TORNADOES...LARGE HAIL...STRONG WINDS...AND DEADLY LIGHTING ARE POSSIBLE IN AND CLOSE TO THE WATCH AREA. STAY TUNED TO THIS STATION FOR THEH LATEST INFORMATION ON THE TORNADO WATCH. BUCKLEW
Special weather statement, May 18, 8:41 PM CDT, 16 minutes before
SDZ008-011-018-035>037-045-048-051-190700- SPECIAL WEATHER STATEMENT...CORRECTED TO INCLUDE WEBSTER NATIONAL WEATHER SERVICE ABERDEEN SD 832 PM CDT SAT MAY 18 1996 ...TORNADO WATCH FOR CENTRAL AND PARTS OF NORTHEAST SOUTH DAKOTA... ...TORNADO WATCH FOR PARTS OF WEST CENTRAL MINNESOTA... A TORNADO WATCH IS IN EFFECT THIS EVENING UNTIL 1 AM CDT FOR MUCH OF CENTRAL SOUTH DAKOTA...SECTIONS OF NORTHEAST SOUTH DAKOTA...AND PARTS OF WEST CENTRAL MINNESOTA. SOME COMMUNITIES INCLUDED IN THE WATCH ARE...REDFIELD..SISSETON... CLARK...PIERRE...MILBANK...MILLER...WATERTOWN...WEBSTER AND ORTONVILLE. TORNADOES...LARGE HAIL...STRONG WINDS...AND DEADLY LIGHTING ARE POSSIBLE IN AND CLOSE TO THE WATxCH AREA. STAY TUNED TO THIS STATION FOR THE LATEST INFORMATION ON THE TORNADO WATCH. BUCKLEW
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 7:20 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Hyde | 50 min |
| May 18, 7:32 PM CDT | Severe Thunderstorm Warning | ABR | Hand | 48 min |
| May 18, 7:52 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 48 min |
| May 18, 9:19 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Hamlin | 46 min |
| May 18, 9:33 PM CDT | Tornado Warning | ABR | Codington, Hamlin | 47 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1996Every severe thunderstorm warning in 1996
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; radar from the NEXRAD Level II archive.