Alert archive / South Dakota / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 187, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Oct 16, 1996, 5:55 PM CDT for Aurora County, South Dakota. It was in force for 50 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
- Oct 16, 1996, 5:55 PM CDT (22:55 UTC)
- Expired
- Oct 16, 1996, 6:45 PM CDT
- In force
- 50 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Aurora County, SD
The radar
The Sioux Falls radar (KFSD), 148 km from the middle of the area, began a volume at 22:59 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 |
|---|---|---|---|
| Oct 16, 6:00 PM CDT | Hail 0.75 | White 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
Omaha, NE (KOAX), launched 12:00Z, 10.9 hours before the alert went out and 321 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
- 579 J/kg
- Mixed-layer CIN
- -171 J/kg
- Mixed-layer LCL
- 822 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, Oct 16, 4:12 PM CDT, 1 hour 43 minutes before
IAZ001>003-012>014-020>022-031-032-MNZ097-098-NEZ013-014-SDZ001>023- 027-030>071-170915- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 415 PM CDT WED OCT 16 1996 ...BIG CHANGE IN THE WEATHER PATTERN EXPECTED...WINTER IS COMING... A LOW PRESSURE SYSTEM IN THE CENTRAL PLAINS WILL HELP BRING A SURGE OF COLDER WEATHER AND A CHANCE FOR SNOW TO SOUTH DAKOTA AND NORTHWEST IOWA. ALTHOUGH THE BLACK HILLS WILL RECEIVE MOST OF THE SNOWFALL...RAIN IS EXPECTED TO CHANGE TO SNOW IN THE PLAINS OF WESTERN SOUTH DAKOTA TONIGHT WITH ONE INCH OF SNOW ACCUMULATION POSSIBLE. AS THE COLDER AIR MOVES EAST ACROSS THE AREA RAIN IS EXPECTED TO CHANGE INTO SNOW LATE TONIGHT IN CENTRAL SOUTH DAKOTA...AND POSSIBLY IN EASTERN SOUTH DAKOTA AND NORTHWEST IOWA LATE THURSDAY AFTERNOON. TEMPERATURES WILL BE COOLER THURSDAY...WITH DAILY HIGHS EXPECTED TO BE REACHED DURING THE MORNING AND FALLING TEMPERATURES IN THE AFTERNOON. BRISK NORTHERLY WINDS RANGING FROM 20 TO 40 MPH CAN ALSO BE EXPECTED ACROSS THE AREA THURSDAY AFTERNOON. ALTHOUGH HEAVY SNOW IS NOT EXPECTED OUTSIDE THE BLACK HILLS...MOTORISTS SHOULD PREPARE FOR SOME WINTER WEATHER TRAVELING CONDITIONS ACROSS THE AREA TONIGHT THROUGH THURSDAY NIGHT. RUBY
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 16, 6:40 PM CDT | Severe Thunderstorm Warning | FSD | Cottonwood | 20 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.