Alert archive / Minnesota / Flash Flood Warnings in 2001

Flash Flood Warning 2, NWS Twin Cities, MN

April 22, 20019 counties in Minnesota

NWS Twin Cities, MN issued this flash flood warning at Apr 22, 2001, 9:23 PM CDT for 9 counties in Minnesota. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Apr 22, 2001, 9:23 PM CDT (02:23 UTC)
Expired: Apr 23, 2001, 3:30 AM CDT
In force: 6 hr
Issued by: NWS Twin Cities, MN
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Benton County, MN, Kandiyohi County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Redwood County, MN, Renville County, MN, Sherburne County, MN, Stearns County, MN

The radar

The Minneapolis radar (KMPX), 87 km from the middle of the area, began a volume at 02:25 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

Minneapolis, MN (KMPX), launched 00:00Z, 2.4 hours before the alert went out and 85 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 421 m above ground
0-6 km bulk shear: 94 kt
0-1 km storm-relative helicity: 735 m²/s²
0-3 km storm-relative helicity: 920 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KMPX 230229
FFWMSP
MNC009-067-093-095-097-127-129-141-145-230830-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD/FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
923 PM CDT SUN APR 22 2001

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BENTON COUNTY IN CENTRAL MINNESOTA
  MILLE LACS COUNTY IN EAST CENTRAL MINNESOTA
  STEARNS COUNTY IN CENTRAL MINNESOTA
  REDWOOD COUNTY IN SOUTHWEST MINNESOTA
  KANDIYOHI COUNTY IN CENTRAL MINNESOTA
  SHERBURNE COUNTY IN CENTRAL MINNESOTA
  RENVILLE COUNTY IN CENTRAL MINNESOTA
  MEEKER COUNTY IN CENTRAL MINNESOTA
  MORRISON COUNTY IN CENTRAL MINNESOTA

* UNTIL 330 AM CDT

* AT 923 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED           
  FLOODING IN BENTON AND MILE LACS COUNTY. STREET AND                
  BASEMENT FLOODING HAS BEEN REPORTED IN FOLEY AND MILACA.   
   
* THE GROUND HAS ALREADY BEEN SATURATED BY RECENT RAINFALL IN THE    
  WARNED AREA...AND ADDITIONAL RAIN WILL RUNOFF AND CAUSE FLOODING.

2 TO 3 INCHES OF RAIN HAS BEEN REPORTED IN REDWOOD FALLS...TO ST 
CLOUD AND MILACA.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS...STREETS AND UNDERPASSES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS.

ABSOLUTELY DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER
COVERS THE ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED. MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. NEVER ATTEMPT TO CROSS HIGH WATER IN A VEHICLE OR ON FOOT

LAT...LON 4599 9363 4443 9499 4445 9532 4594 9449

Nearby

Flash Flood Warnings in Minnesota, 2001 Every flash flood warning in 2001

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.