Alert archive / Minnesota / Areal Flood Advisories in 2011
Areal Flood Advisory 45, NWS Twin Cities, MN
NWS Twin Cities, MN issued this areal flood advisory at Aug 1, 2011, 6:25 AM CDT for Douglas County, Pope County, Stevens County, Minnesota. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Aug 1, 2011, 6:25 AM CDT (11:25 UTC)
- Expired
- Aug 1, 2011, 12:30 PM CDT
- In force
- 6 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
Counties Douglas County, MN, Pope County, MN, Stevens County, MN
The radar
The Minneapolis radar (KMPX), 187 km from the middle of the area, began a volume at 11:25 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, 11.4 hours before the alert went out and 234 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
- 4494 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 1172 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 2.7
- Supercell composite
- 21.3
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Twin Cities, MN wrote its last area forecast discussion before this areal flood advisory went out at Aug 1, 3:23 AM CDT, 3 hours 2 minutes earlier.
Area forecast discussion, Aug 1, 3:23 AM CDT, 3 hours 2 minutes before
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</html>Hazardous weather outlook, Aug 1, 5:27 AM CDT, 58 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 527 AM CDT MON AUG 1 2011 MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028- 021200- DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS- BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA- KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON- YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA- REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH- WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK- ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE- 527 AM CDT MON AUG 1 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND SOUTHERN MINNESOTA... AND WEST CENTRAL WISCONSIN. .DAY ONE...TODAY AND TONIGHT A LARGE AREA OF THUNDERSTORMS...SOME SEVERE...WILL MOVE ACROSS PORTIONS OF CENTRAL MINNESOTA DURING THE MORNING. THESE STORMS WILL CONTAIN TORRENTIAL RAIN AND POSSIBLY DAMAGING WIND GUSTS. THE AREA MOST LIKELY TO SEE THESE STORMS THIS MORNING...IS LOCATED NORTHWEST OF A LINE FROM LITTLE FALLS...ST CLOUD...TO NEAR REDWOOD FALLS. THE STORMS SHOULD DISSIPATE BY LATE MORNING. THE COMBINATION OF TEMPERATURES IN THE LOWER AND MID 90S AND HIGH DEWPOINTS...WILL CAUSE HEAT INDEX VALUES TO REACH THE 105-100 DEGREE RANGE THIS AFTERNOON...ACROSS MUCH OF CENTRAL AND SOUTHERN MINNESOTA...INTO PORTIONS OF WEST CENTRAL WISCONSIN. SEE THE LATEST WEATHER MESSAGE CONCERNING THE HEAT ADVISORY. LATER THIS AFTERNOON OR EVENING...SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS MOST OF THE OUTLOOK AREA. REDEVELOPMENT IS EXPECTED OVER EASTERN NORTH DAKOTA AND NORTHERN MINNESOTA FIRST...THEN WILL GRADUALLY SPREAD EAST OVER THE REGION ALONG A COLD FRONT OVERNIGHT. LARGE HAIL AND DAMAGING WINDS WILL BE THE MAIN SEVERE WEATHER THREAT...ALONG WITH LOCALLY HEAVY RAIN. AN ISOLATED TORNADO CANNOT BE RULED OUT OVER PARTS OF CENTRAL MINNESOTA THIS EVENING...HOWEVER. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORMS MAY LINGER INTO TUESDAY MORNING ACROSS EASTERN PORTIONS OF THE AREA. IT APPEARS THE SEVERE WEATHER THREAT WILL BE FOUND FARTHER EAST HOWEVER...AS THE COLD FRONT EXITS TO THE SOUTHEAST. THERE IS A CHANCE FOR THUNDERSTORMS THURSDAY AND THURSDAY NIGHT AND AGAIN OVER THE WEEKEND. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION MAY BE NEEDED.
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 6:45 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Pope, Stevens, Todd | 45 min |
| Aug 1, 7:13 AM CDT | Tornado Warning | MPX | Douglas, Pope | 47 min |
| Aug 1, 7:27 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Kandiyohi, Morrison, Pope, Stearns, Todd | 63 min |
| Aug 1, 8:13 AM CDT | Areal Flood Advisory | MPX | Kandiyohi, Meeker, Pope, Stearns | 3 hr |
| Aug 1, 9:00 AM CDT | Special Weather Statement | MPX | Benton, Sherburne, Stearns, Wright | 60 min |
| Aug 1, 9:39 AM CDT | Flash Flood Warning | MPX | Douglas, Pope | 3 hr |
| Aug 1, 9:44 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Meeker | 46 min |
| Aug 1, 10:53 AM CDT | Severe Thunderstorm Warning | MPX | Benton, Kandiyohi, Stearns | 67 min |
| Aug 1, 11:09 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Meeker, Stearns | 66 min |
| Aug 1, 11:53 AM CDT | Severe Thunderstorm Warning | MPX | Sherburne, Stearns, Wright | 67 min |
| Aug 1, 12:03 PM CDT | Severe Thunderstorm Warning | MPX | Carver, McLeod, Meeker, Renville, Sibley | 57 min |
| Aug 1, 12:45 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin | 45 min |
| Aug 1, 1:01 PM CDT | Areal Flood Advisory | MPX | Carver, Dakota, Hennepin, Ramsey, Scott | 3 hr |
| Aug 1, 1:18 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Le Sueur, Rice, Scott, Sibley | 57 min |
| Aug 1, 1:25 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Hennepin, Ramsey, Washington | 65 min |
| Aug 1, 2:02 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue, Le Sueur, Rice, Steele, Waseca | 58 min |
| Aug 1, 3:04 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 37 min |
| Aug 1, 3:54 PM CDT | Special Weather Statement | MPX | Anoka, Chisago, Isanti, Mille Lacs | 51 min |
Nearby
Areal Flood Advisories in Minnesota, 2011Every areal flood advisory in 2011
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.