Alert archive / Minnesota / Flash Flood Warnings in 2001

Flash Flood Warning 1, NWS Twin Cities, MN

April 7, 200110 counties in Minnesota

NWS Twin Cities, MN issued this flash flood warning at Apr 7, 2001, 7:00 PM CDT for 10 counties in Minnesota. It was in force for 11 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 7, 2001, 7:00 PM CDT (00:00 UTC)
Expired
Apr 8, 2001, 6:00 AM CDT
In force
11 hr
Issued by
NWS Twin Cities, MN
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Benton County, MN, Chippewa County, MN, Douglas County, MN, Kandiyohi County, MN, Morrison County, MN, Pope County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 136 km from the middle of the area, began a volume at 00:02 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, 0.0 hours before the alert went out and 134 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2001-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2001-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
3 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
464 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KMPX 080010
FFWMSP
MNC009-023-041-067-097-121-145-149-151-153-081200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
700 PM CDT SAT APR 7 2001

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLOOD WARNING FOR...
  SWIFT COUNTY IN WEST CENTRAL MINNESOTA
  BENTON COUNTY IN CENTRAL MINNESOTA
  DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA
  WESTERN STEARNS COUNTY IN CENTRAL MINNESOTA
  STEVENS COUNTY IN WEST CENTRAL MINNESOTA
  EXTREME NORTHWEST KANDIYOHI COUNTY IN CENTRAL MINNESOTA
  CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA
  POPE COUNTY IN WEST CENTRAL MINNESOTA
  TODD COUNTY IN CENTRAL MINNESOTA
  MORRISON COUNTY IN CENTRAL MINNESOTA

* UNTIL 600 AM CDT

* AT 700 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED           
  WIDESPREAD FLOODING...DUE TO RUN OFF...OVER AGRICULTURAL           
  LAND...ROADS...SMALL STREAMS...DITCHES AND LOW LYING AREAS.  

* HEAVY RAINS LAST NIGHT AND EARLY THIS MORNING...OVER SATURATED     
  GROUNDS...RESULTED IN WIDESPREAD FLOODING FROM FOLEY WEST THROUGH  
  LITTLE FALLS...SAUK CENTRE...BELGRADE...ALEXANDRIA...MORRIS AND    
  BENSON. 

ALTHOUGH SIGNIFICANT RAINFALL HAS ENDED OVER THE AREA OF CONCERN... 
SMALL STREAMS AND RIVERS WERE STILL ON THE RISE EARLY THIS EVENING 
ACROSS BENTON AND MORRISON COUNTIES. MANY SMALL STREAMS AND LOW 
LYING AREAS FROM ALEXANDRIA TO BENSON HAVE REACHED FLOOD CONDITIONS 
AND WATER CONDITIONS HAVE LEVELED OFF. LAW ENFORCEMENT OFFICIALS 
REPORT NUMEROUS ROADS STILL CLOSED. IN SOME INSTANCES...BARRICADES 
SET OUT EARLIER TODAY HAVE BEEN KNOCKED DOWN BY RISING FLOOD WATERS. 

MOTORISTS SHOULD NOT ATTEMPT TO DRIVE AROUND BARRICADES OR CROSS 
ROADWAYS INUNDATED WITH RUNOFF. STANDING WATER MAY COVER WASHOUTS 
ESPECIALLY AROUND CULVERTS OR DRAINAGE DITCHES. AT NIGHT...THESE 
AREAS MAY BE ESPECIALLY HARD TO RECOGNIZE. 
LAT...LON 4604 9399 4567 9386 4503 9583 4587 9620

Nearby

Flash Flood Warnings in Minnesota, 2001Every 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.