Alert archive / South Dakota / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 5, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at May 17, 1996, 4:06 PM CDT for Beadle County, South Dakota. It was in force for 34 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
- May 17, 1996, 4:06 PM CDT (21:06 UTC)
- Expired
- May 17, 1996, 4:40 PM CDT
- In force
- 34 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Beadle County, SD
The radar
The Aberdeen radar (KABR), 116 km from the middle of the area, began a volume at 21:10 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 17, 4:10 PM CDT | Hail 0.75 | Wessington, 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 12:00Z, 9.1 hours before the alert went out and 55 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
- 1289 J/kg
- Mixed-layer CIN
- -330 J/kg
- Mixed-layer LCL
- 656 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 172107 SVRFSD SDC005-172140- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 406 PM CDT FRI MAY 17 1996 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 440 PM CDT (340 PM MDT) FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL SOUTH DAKOTA ...NORTHWESTERN BEADLE COUNTY AT 404 PM CDT...A SEVERE THUNDERSTORM WAS DETECTED BY SIOUX FALLS DOPPLER RADAR 29 MILES WEST OF HURON OR 5 MILES WEST OF WESSINGTON MOVING NORTHEAST AT 40 MPH. THIS STORM CAN BE EXPECTED IN THE VICINITY OF... WESSINGTON AROUND 413 PM CDT BONILLA AROUND 431 PM CDT WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG...REINFORCED BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES UNLESS IT IS AN EMERGENCY OR ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD AVOID FLOODED ROADWAYS.
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 17, 11:02 AM CDT, 5 hours 4 minutes before
SDZ006>008-011-018>023-038>040-053>056-059>062-065>071-IAZ001>003- 012>014-020>022-031-032-MNZ097-098-NEZ013-014-180600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1100 AM CDT FRI MAY 17 1996 ...SEVERE WEATHER OUTLOOK FOR EASTERN SOUTH DAKOTA AND ADJOINING COUNTIES OF SOUTHWEST MINNESOTA....NORTHWEST IOWA...AND NORTHEAST NEBRASKA... INGREDIENTS CONTINUE TO COME TOGETHER TO PRODUCE A MODERATE RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING OVER EXTREME EASTERN SOUTH DAKOTA AND ADJOINING COUNTIES OF NORTHWEST IOWA... SOUTHWEST MINNESOTA...AND NORTHEAST NEBRASKA. A COLD FRONT SLOWLY MOVING THROUGH CENTRAL SOUTH DAKOTA AT MIDDAY WILL PUSH EAST ACROSS THE EASTERN DAKOTAS AND NEBRASKA TODAY AND WILL CLASH WITH WARM AND EXTREMELY HUMID AIR CURRENTLY OVER THE REGION. THIS COLLISION OF AIR MASSES WILL TRIGGER SCATTERED THUNDERSTORMS...SOME OF WHICH WILL LIKELY BECOME SEVERE. A FEW THUNDERSTORMS SHOULD DEVELOP MIDDAY NEAR THE MISSOURI RIVER AND WILL BECOME MORE NUMEROUS STARTING MID AFTERNOON. SEVERE WEATHER WILL MOST LIKELY INITIATE DURING THE LATE AFTERNOON HOURS...AS THE ACTIVITY SPREADS INTO FAR EASTERN SOUTH DAKOTA AND INTO ADJOINING AREAS OF NORTHWEST IOWA...NORTHEAST NEBRASKA...AND SOUTHWEST MINNESOTA. AT THIS TIME...IT APPEARS THE AREA WITH THE GREATEST RISK OF SEVERE WEATHER WILL BE EAST OF A YANKTON TO WATERTOWN LINE LATE THIS AFTERNOON AND EVENING WITH A FEW SEVERE STORMS POSSIBLE ACROSS THE REMAINDER OF EASTERN SOUTH DAKOTA. WHEN SEVERE THUNDERSTORMS DO DEVELOP...THEY WILL BE CAPABLE OF PRODUCING TORNADOES...LARGE HAIL AND HEAVY RAINS. STAY TUNED TO NOAA WEATHER RADIO OR ANOTHER RELIABLE WEATHER NEWS SOURCE FOR THE LATEST INFORMATION ON THE DEVELOPING SEVERE WEATHER SITUATION. CHAPMAN
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 4:02 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 28 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.