Alert archive / Wisconsin / Flash Flood Warnings in 1990

Flash Flood Warning 1, NWS Twin Cities, MN

June 13, 1990Pepin County, Wisconsin

NWS Twin Cities, MN issued this flash flood warning at Jun 13, 1990, 12:50 AM CDT for Pepin County, Wisconsin. It was in force for 115 min.

The area

The counties it named.

The facts

Issued: Jun 13, 1990, 12:50 AM CDT (05:50 UTC)
Expired: Jun 13, 1990, 2:45 AM CDT
In force: 115 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Pepin County, WI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 5.8 hours before the alert went out and 122 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: 1326 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1196 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: -0.4
Supercell composite: -2.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 130559 COR
FFWMSP
WIC091-130745-

BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
1250 AM CDT WED JUN 13 1990

THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  300 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...

OF WEST CENTRAL WISCONSIN
          ...PEPIN

A FLASH FLOOD WARNING HAS BEEN POSTED FOR PERSONS LOCATED IN THE
WEST CENTRAL COUNTY OF PEPIN UNTIL 300 THIS WEDNESDAY MORNING.
THUNDERSTORMS PRODUCING TORRENTIAL RAINS HAVE CONTINUED TO TRACK OVER
THE SAME PORTIONS OF PEPIN COUNTY OVER THE PAST SEVERAL.  THIS TREND
FOR CONTINUED HEAVY RAINS WILL PERSIST AT LEAST THROUGH 300 AM. CITIES
THAT MAY BE AFFECTED DURING THIS PERIOD ARE PEPIN AND DURAND.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT.  IT'S
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS.  CAMPERS SHOULD
AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.
DOMBROWSKY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 7:09 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Eau Claire	66 min
Jun 12, 9:48 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin, Pierce	42 min

Nearby

Flash Flood Warnings in Wisconsin, 1990 Every flash flood warning in 1990

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.