Alert archive / Minnesota / Flash Flood Warnings in 1996

Flash Flood Warning 1, NWS Twin Cities, MN

August 26, 19964 counties in Minnesota

NWS Twin Cities, MN issued this flash flood warning at Aug 26, 1996, 12:48 AM CDT for 4 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: Aug 26, 1996, 12:48 AM CDT (05:48 UTC)
Expired: Aug 26, 1996, 4:00 AM CDT
In force: 3 hr
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Le Sueur County, MN, Rice County, MN, Steele County, MN, Waseca County, MN

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.8 hours before the alert went out and 74 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: 3008 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 1140 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 260550
FFWMSP
MNC013-079-103-131-147-161-260900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1248 AM CDT MON AUG 26 1996

* FLASH FLOOD WARNING FOR
  EASTERN NICOLLET COUNTY - SOUTH CENTRAL MINNESOTA
  BLUE EARTH COUNTY - SOUTH CENTRAL MINNESOTA
  STEELE COUNTY - SOUTH CENTRAL MINNESOTA
  WASECA COUNTY - SOUTH CENTRAL MINNESOTA
  LE SEUER COUNTY - SOUTH CENTRAL MINNESOTA
  RICE COUNTY - SOUTH CENTRAL MINNESOTA

* UNTIL 400 AM CDT
 
* SOME CITIES AFFECTED
    MANKATO
    WASECA
    OWATONNA
    ST PETER
    LE CENTER
    FARIBAULT

* CAUSE AND EFFECT
    SHOWERS AND THUNDERSTORMS HAVE BEEN MOVING SLOWLY SOUTH ACROSS
    SOUTH CENTRAL MINNESOTA THIS EVENING. LAW ENFORCEMENT IN WASECA
    HAS ALREADY RECEIVED OVER 3 1/2 INCHES OF RAIN...WITH ALMOST 2
    INCHES SINCE MIDNIGHT.

* FORECAST CONDITIONS
    SHOWERS AND THUNDERSTORMS WILL CONTINUE TO MOVE SLOWLY ACROSS
    THE AREA THROUGH THE EARLY MORNING. HEAVY DOWNPOURS ALONG WITH
    PEA TO MARBLE SIZE HAIL WILL BE POSSIBLE. 

LEAVE FLOOD PRONE OR LOW LYING AREAS IMMEDIATELY. MOTORISTS SHOULD
BE ESPECIALLY CAREFUL AT NIGHT AND AVOID DRIVING INTO MOVING WATER
OF UNKNOWN DEPTH...LOW WATER CROSSINGS AND FLOOD PRONE AREAS.

HAMEN

&

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 25, 7:39 PM CDT	Severe Thunderstorm Warning	MPX	Dakota	61 min
Aug 25, 7:55 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	60 min
Aug 25, 8:00 PM CDT	Severe Thunderstorm Warning	MPX	Scott	45 min
Aug 25, 8:31 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Rice	44 min
Aug 25, 8:51 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	69 min
Aug 25, 9:10 PM CDT	Severe Thunderstorm Warning	MPX	Rice	50 min
Aug 25, 10:03 PM CDT	Severe Thunderstorm Warning	MPX	Rice	57 min
Aug 25, 11:06 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Rice	34 min
Aug 26, 12:09 AM CDT	Severe Thunderstorm Warning	MPX	Dakota	31 min
Aug 26, 12:48 AM CDT	Flash Flood Warning	MPX	Blue Earth, Nicollet	3 hr

Nearby

Flash Flood Warnings in Minnesota, 1996 Every flash flood warning in 1996

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.