Alert archive / Minnesota / Flash Flood Warnings in 2011
Flash Flood Warning 14, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Aug 16, 2011, 4:56 PM CDT for 9 counties in Minnesota. It was in force for 3 hr. 5 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 16, 2011, 4:56 PM CDT (21:56 UTC)
- Expired
- Aug 16, 2011, 8:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Anoka County, MN, Benton County, MN, Chisago County, MN, Hennepin County, MN, Isanti County, MN, Meeker County, MN, Mille Lacs County, MN, Sherburne County, MN, Wright County, MN
The radar
The Minneapolis radar (KMPX), 49 km from the middle of the area, began a volume at 21:57 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 16, 6:02 PM CDT | FLASH FLOOD | 8 Nw Princeton, MN | WATER WASHED OVER COUNTY ROAD 6 NEAR THE INTERSECTION OF COUNTY ROAD 6 AND 55TH STREET. NEARBY CULVERT WASHED OUT. |
| Aug 16, 6:43 PM CDT | HEAVY RAIN 2.1 | Wsw Waverly, MN | |
| Aug 16, 7:12 PM CDT | FLASH FLOOD | Osseo, MN | RESEDENTIAL STREET FLOODING IN OSSEO. SOME ROADS IMPASSABLE DUE TO HIGH WATER. |
| Aug 16, 7:52 PM CDT | FLASH FLOOD | Spring Lake Park, MN | ROAD IMPASSABLE DUE TO HIGH WATER AT 81ST AND HWY 65. |
| Aug 16, 7:56 PM CDT | FLASH FLOOD | Fridley, MN | UNIVERSITY AVE IMPASSABLE DUE TO HIGH WATER BETWEEN 73RD AND OSBORNE. LOCAL SEWERS ARE BACKING UP DUE TO EXCESSIVE RUN OFF. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 9.9 hours before the alert went out and 48 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 992 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
246
WGUS53 KMPX 162156
FFWMPX
MNC003-009-025-053-059-093-095-141-171-170100-
/O.NEW.KMPX.FF.W.0014.110816T2156Z-110817T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
456 PM CDT TUE AUG 16 2011
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
EAST CENTRAL MEEKER COUNTY IN CENTRAL MINNESOTA...
ISANTI COUNTY IN EAST CENTRAL MINNESOTA...
NORTHERN AND CENTRAL HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
NORTHWESTERN CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
SHERBURNE COUNTY IN CENTRAL MINNESOTA...
SOUTHEASTERN BENTON COUNTY IN CENTRAL MINNESOTA...
SOUTHERN MILLE LACS COUNTY IN EAST CENTRAL MINNESOTA...
WRIGHT COUNTY IN CENTRAL MINNESOTA...
* UNTIL 800 PM CDT
* AT 452 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RAINFALL RATES OF 2 TO 4 INCHES PER HOUR CAN BE
EXPECTED WITH THESE STORMS. THIS WILL BE OCCURING DURING THE
EVENING RUSH HOUR.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BUFFALO...CAMBRIDGE...MINNEAPOLIS...NORTH BRANCH...PLYMOUTH...
PRINCETON...ALBERTVILLE...ANDOVER...ANNANDALE...ANOKA...BECKER...
BIG LAKE...BLAINE...BODUM...BROOKLYN CENTER...BROOKLYN PARK...
CEDAR...CHAMPLIN...CIRCLE PINES...CLEAR LAKE...CLEARWATER...
COKATO...COLUMBIA HEIGHTS...COON RAPIDS...CORCORAN...CRYSTAL...
DALBO...DASSEL...DAYTON AND DELANO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS... OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING
STREAM... EVEN A SMALL ONE...ON FOOT OR IN A VEHICLE.
&&
LAT...LON 4512 9315 4512 9323 4501 9320 4495 9323
4501 9437 4531 9418 4530 9416 4535 9409
4543 9405 4546 9408 4572 9391 4573 9288
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 4:38 PM CDT | Areal Flood Advisory | MPX | Benton, Isanti, Kanabec, Meeker, Mille Lacs, Sherburne and 2 more | 3 hr |
Nearby
Flash Flood Warnings in Minnesota, 2011Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.