Alert archive / South Dakota / Flash Flood Warnings in 1996
Flash Flood Warning 3, NWS Aberdeen, SD
NWS Aberdeen, SD issued this flash flood warning at Jul 21, 1996, 3:30 AM MDT for Dewey County, Stanley County, South Dakota. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 21, 1996, 3:30 AM MDT (09:30 UTC)
- Expired
- Jul 21, 1996, 4:00 AM MDT
- In force
- 30 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
Counties Dewey County, SD, Stanley County, SD
The radar
The Rapid City radar (KUDX), 177 km from the middle of the area, began a volume at 09:32 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.
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 9.5 hours before the alert went out and 183 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2714 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 344 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 flash flood 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 20, 10:21 PM MDT, 5 hours 9 minutes before
SDZ033-045-211025- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 1120 PM CDT (1020 PM MDT) SAT JUL 20 1996 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 5 AM CDT (4 AM MDT)... A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR JONES AND STANLEY COUNTIES OF CENTRAL SOUTH DAKOTA...EFFECTIVE UNTIL 5 AM CDT...OR 4 AM MDT. THIS INCLUDES THE COMMUNITIES OF MURDO AND FORT PIERRE. REMEMBER...A WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEV<ERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS IN AND CLOSE TO THE WATCH AREA. BE ON THE LOOKOUT FOR THE APPROACH OF THREATENING WEATHER...AND BE PREPARED TO SEEK SAFE SHELTER IF A WARNING IS ISSUED. MIDDLEBROOKE
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 6:01 PM MDT | Severe Thunderstorm Warning | ABR | Hughes, Lyman | 64 min |
| Jul 20, 6:06 PM MDT | Tornado Warning | ABR | Sully | 49 min |
| Jul 20, 7:06 PM MDT | Severe Thunderstorm Warning | ABR | Lyman | 59 min |
| Jul 20, 11:32 PM MDT | Severe Thunderstorm Warning | ABR | Sully | 48 min |
| Jul 21, 12:00 AM MDT | Severe Thunderstorm Warning | ABR | Buffalo, Lyman | 30 min |
| Jul 21, 1:27 AM MDT | Severe Thunderstorm Warning | ABR | Hyde, Sully | 43 min |
| Jul 21, 1:33 AM MDT | Severe Thunderstorm Warning | ABR | Hughes | 32 min |
| Jul 21, 1:42 AM MDT | Severe Thunderstorm Warning | ABR | Lyman | 48 min |
| Jul 21, 2:34 AM MDT | Severe Thunderstorm Warning | ABR | Potter | 31 min |
| Jul 21, 3:30 AM MDT | Severe Thunderstorm Warning | ABR | Dewey, Stanley | 30 min |
Nearby
Flash Flood Warnings in South Dakota, 1996Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.