Alert archive / Minnesota / Areal Flood Advisories in 2011
Areal Flood Advisory 24, NWS Twin Cities, MN
NWS Twin Cities, MN issued this areal flood advisory at Jul 16, 2011, 6:24 AM CDT for Anoka County, Ramsey County, Washington County, Minnesota; Pierce County, Saint Croix County, Wisconsin. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 16, 2011, 6:24 AM CDT (11:24 UTC)
- Expired
- Jul 16, 2011, 9:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
Counties Anoka County, MN, Ramsey County, MN, Washington County, MN, Pierce County, WI, Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 62 km from the middle of the area, began a volume at 11:26 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
International Fa, MN (KINL), launched 00:00Z, 11.4 hours before the alert went out and 397 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
- 876 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1110 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.8
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 Jul 16, 4:13 AM CDT, 2 hours 11 minutes earlier.
Area forecast discussion, Jul 16, 4:13 AM CDT, 2 hours 11 minutes before
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</html>Hazardous weather outlook, Jul 16, 5:21 AM CDT, 1 hour 3 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 521 AM CDT SAT JUL 16 2011 MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028- 171030- 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- 521 AM CDT SAT JUL 16 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND SOUTHERN MINNESOTA... AND WEST CENTRAL WISCONSIN. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS OVER THE EASTERN THIRD OF THE REGION WILL DECREASE TO ISOLATED ACTIVITY THIS AFTERNOON ACROSS EAST CENTRAL MINNESOTA...WITH A CHANCE FOR CONVECTIVE ACTIVITY ACROSS WEST CENTRAL WISCONSIN DURING THE AFTERNOON HOURS. ISOLATED RAINFALL AMOUNTS IN THE ONE INCH CATEGORY MAY OCCUR AS THESE STORMS PASS YOUR LOCATION. HOT AND HUMID CONDITIONS WILL BE SEEN ACROSS ALL OF CENTRAL AND SOUTHERN MINNESOTA...TO INCLUDE WEST CENTRAL WISCONSIN THIS AFTERNOON. HIGH TEMPERATURES WILL RISE INTO THE LOW TO MID 90S...AND HEAT INDICES'S WILL SOAR INTO THE 100 TO 105 DEGREE RANGE ACROSS MOST OF THIS AREA. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED OVER CENTRAL MINNESOTA...AND A PORTION OF WEST CENTRAL WISCONSIN SUNDAY NIGHT INTO WEDNESDAY. CHANCES INCREASE FOR SHOWERS AND THUNDERSTORMS THURSDAY INTO FRIDAY...AS A POTENT SURFACE LOW PRESSURE SYSTEM MARCHES INTO EASTERN SOUTH DAKOTA. HOT AND HUMID CONDITIONS WILL CONTINUE ACROSS THE OUTLOOK AREA FOR THE REMAINDER OF THE WEEKEND...AND CONTINUE INTO WEDNESDAY...WITH HIGH TEMPERATURES IN THE 90S...AND HEAT INDEX VALUES ABOVE 100 DEGREES. THE HEAT INDEX VALUES SHOULD APPROACH OR SLIGHTLY EXCEED 105 DEGREES DURING THIS TIME FRAME. PLEASE SEE THE LATEST EXCESSIVE HEAT WATCH FOR MORE INFORMATION. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION WILL NOT BE NEEDED.
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 10:28 AM CDT | River Flood Warning | MPX | Carver, Scott | 10 hr |
| Jul 16, 10:28 AM CDT | River Flood Warning | MPX | Carver, Hennepin, Scott | 10 hr |
| Jul 16, 10:28 AM CDT | River Flood Warning | MPX | Dakota, Hennepin, Scott | 6 days |
| Jul 16, 10:28 AM CDT | River Flood Warning | MPX | Stearns | 11 days |
| Jul 16, 6:46 AM CDT | Areal Flood Advisory | MPX | Barron, Chippewa, Dunn, Eau Claire | 3 hr |
| Jul 16, 8:01 AM CDT | Areal Flood Advisory | MPX | Dunn, Eau Claire, Pepin, Pierce | 3 hr |
| Jul 16, 8:23 AM CDT | Flash Flood Warning | MPX | Chippewa, Dunn | 3 hr |
Nearby
Areal Flood Advisories in Minnesota, 2011Areal Flood Advisories in Wisconsin, 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.