Alert archive / Minnesota / Flash Flood Warnings in 2002

Flash Flood Warning 42, NWS Twin Cities, MN

May 8, 20026 counties in Minnesota

NWS Twin Cities, MN issued this flash flood warning at May 8, 2002, 12:07 PM CDT for 6 counties in Minnesota. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 8, 2002, 12:07 PM CDT (17:07 UTC)
Expired
May 8, 2002, 3:00 PM CDT
In force
3 hr
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Brown County, MN, Chippewa County, MN, Lac qui Parle County, MN, Redwood County, MN, Renville County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 148 km from the middle of the area, began a volume at 17:07 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 12:00Z, 5.1 hours before the alert went out and 145 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 12:00Z on 2002-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2002-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 401 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
565 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
401 m²/s²
0-3 km storm-relative helicity
393 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 081708
FFWMSP
MNZ054-056-064-065-073-074-082000-

FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1207 PM CDT WED MAY 8 2002

THE NATIONAL WEATHER SERVICE IN CHANHASSEN HAS ISSUED A FLASH FLOOD
WARNING FOR THE FOLLOWING COUNTIES IN WEST CENTRAL MINNESOTA...LAC
QUI PARLE...CHIPPEWA...YELLOW MEDICINE...REDWOOD...BROWN AND RENVILLE
COUNTIES UNTIL 300 PM THIS AFTERNOON.

STRONG THUNDERSTORMS CAPABLE OF PRODUCING TORRENTIAL DOWNPOURS
WITHIN A VERY SHORT SPAN WILL CONTINUE TO TRACK OVER PARTS OF WEST
CENTRAL MINNESOTA DURING THE AFTERNOON.  RECENT RAINS FROM LAST
NIGHT AND POTENTIAL RAINFALL EXPECTED WITH THESE STORMS ARE LIKELY
TO CAUSE SOME PONDING OF WATER OVER ROADWAYS. RUNOFF FROM THESE
RAINS WILL ALSO CAUSE SOME MODERATE RISES ALONG SMALL CREEKS AND
STREAMS. PEOPLE WITH INTERESTS...ESPECIALLY NEAR LOWLYING AREAS
SHOULD MOVE TO HIGHER GROUND IMMEDIATELY.

MOTORISTS SHOULD NOT ATTEMPT TO DRIVE THROUGH WATER OF UNKNOWN
DEPTH.

JVM

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 8, 11:50 AM CDTSevere Thunderstorm WarningMPXRedwood55 min
May 8, 12:17 PM CDTFlash Flood WarningMPXBrown, Chippewa, Lac qui Parle, Redwood, Renville, Yellow Medicine3 hr
May 8, 2:15 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Le Sueur, Nicollet45 min
May 8, 2:48 PM CDTSevere Thunderstorm WarningMPXWaseca42 min
May 8, 2:54 PM CDTSevere Thunderstorm WarningMPXScott36 min
May 8, 2:59 PM CDTSevere Thunderstorm WarningMPXLe Sueur31 min
May 8, 3:04 PM CDTSevere Thunderstorm WarningMPXDakota, Rice41 min
May 8, 3:42 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue, Rice48 min
May 8, 4:28 PM CDTSevere Thunderstorm WarningMPXGoodhue47 min
May 8, 5:16 PM CDTSevere Thunderstorm WarningMPXGoodhue29 min
May 8, 5:24 PM CDTTornado WarningMPXGoodhue36 min
May 8, 5:45 PM CDTSevere Thunderstorm WarningMPXCarver30 min

Nearby

Flash Flood Warnings in Minnesota, 2002Every flash flood warning in 2002

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.