Alert archive / South Dakota / River Flood Warnings in 2010
River Flood Warning 155, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this river flood warning at Sep 2, 2010, 8:48 AM CDT for Brookings County, Moody County, South Dakota. It took effect at Sep 3, 2010, 9:12 AM CDT. It was in force for 27 hr.
The area
The counties it named.
The facts
- Issued
- Sep 2, 2010, 8:48 AM CDT (13:48 UTC)
- In effect from
- Sep 3, 2010, 9:12 AM CDT
- Expired
- Sep 4, 2010, 11:56 AM CDT
- In force
- 27 hr
- Issued by
- NWS Sioux Falls, SD
- Flood severity
- Moderate
Counties Brookings County, SD, Moody County, SD
The radar
The Sioux Falls radar (KFSD), 68 km from the middle of the area, began a volume at 13:52 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 river
Written for the forecast point Big Sioux River near Brookings (BRKS2).
- Action stage
- 8 ft
- Minor stage
- 9 ft
- Moderate stage
- 10.5 ft
- Major stage
- 15 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 06480000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
What forecasters said that day
The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sioux Falls, SD wrote its last area forecast discussion before this river flood warning went out at Sep 2, 3:45 AM CDT, 5 hours 3 minutes earlier.
Area forecast discussion, Sep 2, 3:45 AM CDT, 5 hours 3 minutes before
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA NATIONAL WEATHER SERVICE SIOUX FALLS SD 345 AM CDT THU SEP 2 2010 .DISCUSSION... UPPER LEVEL WAVE AND LOW LEVEL JET DRIVING MUCH OF THE THUNDERSTORM ACTIVITY THIS MORNING. SOME VERY HEAVY RAIN HAS FALLEN ACROSS BROOKINGS...LINCOLN...AND MARSHALL COUNTIES NEAR HIGHWAY 14 THIS MORNING...AS STORMS TRAINED OVER THIS AREA. THUNDERSTORM ACTIVITY IS EXPECTED TO BE EAST OF THE FORECAST AREA BY MID MORNING...IF NOT EARLIER...AS STRONGEST UPPER FORCING AND LOW LEVEL JET MOVE INTO EASTERN MN AND IA. SEVERE WEATHER THREAT WILL CONTINUE UNTIL THE LINE OF THUNDERSTORMS MOVE EAST OF THE AREA THIS MORNING. MAINLY LOOKING AT MARGINAL SEVERE HAIL WITH THE STRONGER STORMS. MAY SEE SOME ISOLATED SHOWER ACTIVITY LINGER BEHIND THE MAIN LINE OF STORMS THIS MORNING...BUT THAT ACTIVITY WILL SHUT OFF AS SUBSIDENCE SETS IN AND THE ATMOSPHERE STABILIZES. MOST OF THE AREA SHOULD SEE A PERIOD OF SUNSHINE BY LATER THIS MORNING OR EARLY AFTERNOON. THIS WILL SET THE STAGE FOR SOME ISOLATED TO SCATTERED SHOWERS MID TO LATE AFTERNOON. STEEP LAPSE RATES WILL DEVELOP AS A COLD POCKET OF AIR SLIDES OVER THE AREA. 700 MB TEMPS WILL DROP TO AROUND 0 DEG C AND 500 MB TEMPS MINUS 15 TO MINU 20 DEG C. MOISTURE WILL GENERALLY BE LACKING SOUTH OF I90...SO NOT MUCH MORE THAN ISOLATED LIGHT SHOWERS. FARTHER NORTH...DYNAMICS SHOULD BE A BIT STRONG AND CERTAINLY COOLER WITH MORE MOISTURE... SUCH THAT COULD SEE A RUMBELS OF THUNDER. SEVERE THUNDERSTORMS ARE NOT EXPECTED THIS AFTERNOON...BUT INVERTED V SOUNDINGS AND 40+ KTS ALOFT COULD MIX TO THE SFC...PRODUCING GUSTS 40 TO 50 MPH. ISSUED A WIND ADVISORY FOR WESTERN SECTIONS OF THE CWA THIS AFTERNOON. LIKE USUAL...SHOULD BE A MARGINAL EVENT...WITH SUSTAINED WINDS AROUND 30 MPH AND A FEW GUSTS OF 40 TO 45 MPH. THE ATMOSPHERE WILL RAPIDLY STABILZE THIS EVENING...BRINGING AN END TO ANY SHOWER OR THUNDESTORMS. MAY SEE A LINGERING SHOWER IN SW MN THROUGH 8 OR 9 PM...BUT THAT IS ABOUT IT FOR THIS EVENING. HIGH PRESSURE WILL BUILD IN OVER THE NEXT FEW DAYS...KEEPING THINGS ON THE DRY SIDE THROUGH THE WEEKEND. /97 && .AVIATION... IN THE NEAR TERM...TSRA DEVELOPMENT IS THE OBVIOUS CONCERN...MAINLY ALONG THE INTERSTATE 29 CORRIDOR AND EWD. TWO AREAS OF CONCENTRATED STORM ACTIVITY WILL AFFECT THE NRN PORTIONS OF SW MN...AND ALSO TO THE SOUTH OF I 90. SCATTERED DEVELOPMENT IS POSSIBLE ELSEWHERE. ALL OF THIS ACTIVITY IS PUSHING OFF TO THE EAST BUT WILL BE A CONCERN FOR SW MN AND NW IA THRU AROUND 12Z. IN ANY OF THIS TSRA ACTIVITY... SHORT TERM IFR TO LIFR CONDS ARE LIKELY. IN ADDITION...EVEN AFTER THE RAINFALL ENDS...MVFR STRATUS MAY LINGER UNTIL SHORTLY AFT SUNRISE IN AREAS FM I 29 AND EWD. FM ABOUT 15Z ONWARD...CONDS SHOULD BE VFR ACROSS THE ENTIRE FSD FA. BUT W TO NW WINDS GUSTING TO OVER 25 MPH IS PROBABLE FOR THE MIDDAY AND AFTERNOON HOURS. THE WINDS WL SUBSIDE SOME THIS EVENING WITH VFR STILL PREVAILING. /MJF && .FSD WATCHES/WARNINGS/ADVISORIES... SD...NONE. MN...NONE. IA...NONE. NE...NONE. &&
Hazardous weather outlook, Sep 2, 5:09 AM CDT, 3 hours 39 minutes before
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Local storm report, Sep 2, 4:47 AM CDT, 4 hours 1 minute before
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</html>The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 10:12 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix | 33 min |
| Sep 2, 1:52 AM CDT | Flash Flood Warning | FSD | Brookings | 3 hr |
| Sep 2, 2:35 AM CDT | Flash Flood Warning | FSD | Brookings | 3 hr |
| Sep 2, 3:19 AM CDT | Severe Thunderstorm Warning | FSD | Brookings | 26 min |
| Sep 2, 3:52 AM CDT | Wind Advisory | FSD | Aurora, Beadle, Brule, Charles Mix, Davison, Douglas and 3 more | 15 hr |
| Sep 2, 3:51 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Murray | 39 min |
| Sep 2, 8:48 AM CDT | River Flood Warning | FSD | Lyon | 25 hr |
| Sep 2, 8:48 AM CDT | River Flood Warning | FSD | Lyon | 51 hr |
Nearby
River Flood Warnings in South Dakota, 2010Every river flood warning in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.