Alert archive / Minnesota / Flash Flood Warnings in 2010
Flash Flood Warning 13, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Aug 10, 2010, 10:54 PM CDT for 5 counties in Minnesota. It was in force for 3 hr. 2 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 10, 2010, 10:54 PM CDT (03:54 UTC)
- Expired
- Aug 11, 2010, 2:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Dakota County, MN, Hennepin County, MN, Ramsey County, MN, Scott County, MN, Washington County, MN
The radar
The Minneapolis radar (KMPX), 27 km from the middle of the area, began a volume at 03:53 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 10, 11:10 PM CDT | FLASH FLOOD | Farmington, MN | ALL LANES OF COUNTY ROAD 50 COVERED WITH APPROXIMATELY 6 INCHES OF WATER. OCCURRED ONE QUARTER MILE EAST OF PILOT KNOB ROAD. |
| Aug 10, 11:42 PM CDT | FLASH FLOOD | Minneapolis, MN | BUS AND POLICE CAR STUCK IN WATER NEAR CENTRAL AND 20TH AVE. REPORTED BY FOX 9 NEWS. |
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 00:00Z, 3.9 hours before the alert went out and 30 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
- 1596 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 830 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.3
The text
As transmitted, in the capitals the NWS used until 2016.
177
WGUS53 KMPX 110354
FFWMPX
MNC037-053-123-139-163-110700-
/O.NEW.KMPX.FF.W.0013.100811T0354Z-100811T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1054 PM CDT TUE AUG 10 2010
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
DAKOTA COUNTY IN EAST CENTRAL MINNESOTA...
EASTERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
NORTHEASTERN SCOTT COUNTY IN EAST CENTRAL MINNESOTA...
RAMSEY COUNTY IN EAST CENTRAL MINNESOTA...
SOUTHERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
* UNTIL 200 AM CDT
* AT 1052 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED SLOW
MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED
AREA. FLOODING WAS REPORTED ALONG SEVERAL ROADWAYS ACROSS THE
MINNEAPOLIS AND ST PAUL AREA.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MINNEAPOLIS...ST PAUL...APPLE VALLEY...ARDEN HILLS...BAYPORT...
BLOOMINGTON...BROOKLYN CENTER...BROOKLYN PARK...BURNSVILLE...
COATES...COTTAGE GROVE...CREDIT RIVER...CRYSTAL...CRYSTAL BAY...
DEEPHAVEN...EAGAN...EDEN PRAIRIE...EDINA...FALCON HEIGHTS...
FARMINGTON...GOLDEN VALLEY...HASTINGS...HOPKINS...INVER GROVE
HEIGHTS...LAKE ELMO...LAKEVILLE...LANDFALL...LAUDERDALE...LILYDALE
AND LITTLE CANADA.
ADDITIONAL RAINFALL COULD LIKELY EXCEED ONE INCH THROUGH 1 AM ACROSS
THE WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN THE
TWIN CITIES.
&&
LAT...LON 4472 9356 4480 9356 4481 9352 4489 9352
4490 9356 4515 9352 4510 9327 4504 9327
4504 9323 4513 9321 4511 9277 4507 9280
4475 9281 4471 9274 4463 9273 4459 9327
$$1 follow-up statement
317
WGUS73 KMPX 110657
FFSMPX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
157 AM CDT WED AUG 11 2010
MNC037-053-123-139-163-110712-
/O.EXP.KMPX.FF.W.0013.000000T0000Z-100811T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON MN-HENNEPIN MN-RAMSEY MN-DAKOTA MN-SCOTT MN-
157 AM CDT WED AUG 11 2010
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHEASTERN
SCOTT...DAKOTA...RAMSEY...EASTERN HENNEPIN AND SOUTHERN WASHINGTON
COUNTIES WILL BE ALLOWED TO EXPIRE AT 200 AM CDT...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA.
IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW
ENFORCEMENT AGENCY.
LAT...LON 4472 9356 4480 9356 4481 9352 4489 9352
4490 9356 4515 9352 4510 9327 4504 9327
4504 9323 4513 9321 4511 9277 4507 9280
4475 9281 4471 9274 4463 9273 4459 9327
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 9:20 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Le Sueur, Rice, Scott | 55 min |
| Aug 10, 9:29 PM CDT | Areal Flood Advisory | MPX | Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more | 3 hr |
| Aug 11, 2:12 PM CDT | Tornado Warning | MPX | Watonwan | 18 min |
Nearby
Flash Flood Warnings in Minnesota, 2010Every flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.