Alert archive / South Dakota / Flash Flood Warnings in 2003
Flash Flood Warning 9, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jul 8, 2003, 2:02 AM CDT for Bon Homme County, South Dakota. It was in force for 118 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 8, 2003, 2:02 AM CDT (07:02 UTC)
- Expired
- Jul 8, 2003, 4:00 AM CDT
- In force
- 118 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Counties, with a storm outline in the text
County Bon Homme County, SD
The radar
The Sioux Falls radar (KFSD), 102 km from the middle of the area, began a volume at 07:05 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
Aberdeen, SD (KABR), launched 00:00Z, 7.0 hours before the alert went out and 211 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
- 87 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 1285 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- -72 m²/s²
- 0-3 km storm-relative helicity
- -114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KFSD 080702 FFWFSD SDC009-080900- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 202 AM CDT TUE JUL 8 2003 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN BON HOMME COUNTY IN SOUTHEAST SOUTH DAKOTA * UNTIL 400 AM CDT * AT 202 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WERE PRODUCING VERY HEAVY RAINFALL OVER THE WARNED AREA. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. LAT...LON 4299 9783 4299 9764 4317 9764 4317 9787 $$ RSR
2 follow-up statements
000 WGUS73 KFSD 080808 FFSFSD SDC009-080900- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 303 AM CDT TUE JUL 8 2003 ...FLASH FLOOD WARNING CONTINUES UNTIL 400 AM CDT FOR... ...NORTHERN BON HOMME COUNTY IN SOUTHEAST SOUTH DAKOTA... AT 300 AM CDT...RADAR INDICATED THAT HEAVY RAINFALL WAS LOCATED NORTH OF BON HOMME COUNTY. HOWEVER...SCATTERED THUNDERSTORMS ACROSS CHARLES MIX COUNTY MAY MOVE ACROSS EXTREME NORTHERN BON HOMME COUNTY THROUGH 4 AM. WHILE ADDITIONAL RAINFALL WILL BE LESS THAN AN INCH...RAINFALL ESTIMATES INDICATED THAT 3 TO 5 INCHES RAIN HAS FALLEN ACROSS THE AREA THROUGH 3 AM. CONTINUED RUNOFF WILL CONTINUE TO PRODUCE THE THREAT OF FLASH FLOODING IN LOW LYING AREAS THROUGH 4 AM. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. $$ SCHUMACHER
000 WGUS73 KFSD 080857 FFSFSD SDC009-080930- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 356 AM CDT TUE JUL 8 2003 ...FLASH FLOOD WARNING HAS EXPIRED FOR... ...NORTHERN BON HOMME COUNTY IN SOUTHEAST SOUTH DAKOTA... RAINFALL CONTINUES TO DECREASE ACROSS NORTHERN BON HOMME COUNTIES...WITH THUNDERSTORMS EXPECTED TO MOVE NORTH OF THE AREA BY 430 AM. WITH RAINFALL OF LESS THAN AN INCH SINCE 3 AM...THE THREAT OF FLASH FLOODING HAS DIMINISHED AND THE FLASH FLOOD WATCH HAS BEEN ALLOWED TO EXPIRE. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. $$ SCHUMACHER
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 11:25 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson | 50 min |
| Jul 7, 11:31 PM CDT | Severe Thunderstorm Warning | FSD | Hanson | 44 min |
| Jul 7, 11:46 PM CDT | Severe Thunderstorm Warning | FSD | Turner | 29 min |
| Jul 8, 12:07 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 23 min |
| Jul 8, 12:13 AM CDT | Severe Thunderstorm Warning | FSD | Turner | 32 min |
| Jul 8, 12:21 AM CDT | Severe Thunderstorm Warning | FSD | Hutchinson | 39 min |
| Jul 8, 12:25 AM CDT | Severe Thunderstorm Warning | FSD | Gregory | 50 min |
| Jul 8, 12:28 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 47 min |
| Jul 8, 12:56 AM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Yankton | 34 min |
| Jul 8, 1:29 AM CDT | Severe Thunderstorm Warning | FSD | Bon Homme | 31 min |
| Jul 8, 1:31 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 29 min |
| Jul 8, 3:00 AM CDT | Flash Flood Warning | FSD | Clay | 2 hr |
Nearby
Flash Flood Warnings in South Dakota, 2003Every flash flood warning in 2003
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.