Alert archive / Minnesota / Flash Flood Warnings in 2007
Flash Flood Warning 27, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Aug 20, 2007, 5:10 AM CDT for Martin County, Minnesota. It was in force for 4 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 20, 2007, 5:10 AM CDT (10:10 UTC)
- Expired
- Aug 20, 2007, 9:15 AM CDT
- In force
- 4 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Martin County, MN
The radar
The Minneapolis radar (KMPX), 152 km from the middle of the area, began a volume at 10:13 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 20, 5:30 AM CDT | FLASH FLOOD | Sherburn, MN | STREET FLOODING |
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, 10.2 hours before the alert went out and 151 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
- 514 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 183 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KMPX 201012 FFWMPX MNC091-201415- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 510 AM CDT MON AUG 20 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * FLASH FLOOD WARNING FOR... MARTIN COUNTY IN SOUTH CENTRAL MINNESOTA... * UNTIL 915 AM CDT * AT 510 AM CDT...RADAR DETECTED THUNDERSTORMS PRODUCING VERY HEAVY RAIN ACROSS OVER MARTIN COUNTY IN SOUTH CENTRAL MINNESOTA. THE STORMS PRODUCING THE HEAVIEST RAIN WERE 3 MILES SOUTH OF SHERBURN...OR ABOUT 13 MILES WEST OF FAIRMONT. THESE STORMS WERE MOVING EAST AT 15 MPH. ESTIMATES FROM RADAR INDICATED THAT NEARLY 2 TO 3 INCHES OF RAIN HAS FALLEN DURING THE PAST HOUR OVER THE WARNED AREA. EXPECT ADDTIONAL SLOW MOVING THUNDERSTORMS TO PRODUCE TORRENTIAL RAINFALL IN THE WARNED AREA. * SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...FAIRMONT AND TRIMONT. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT. IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. LAT...LON 4352 9484 4351 9431 4376 9431 4377 9481 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 4:10 AM CDT | Flash Flood Watch | MPX | Blue Earth, Brown, Faribault, Freeborn, Goodhue, Le Sueur and 9 more | 23 hr |
| Aug 20, 9:06 AM CDT | Flash Flood Warning | MPX | Martin | 3 hr |
Nearby
Flash Flood Warnings in Minnesota, 2007Every flash flood warning in 2007
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.