Alert archive / Minnesota / Flash Flood Warnings in 2002

Flash Flood Warning 16, NWS Twin Cities, MN

July 7, 2002Douglas County, Morrison County, Todd County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Jul 7, 2002, 10:01 PM CDT for Douglas County, Morrison County, Todd County, 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 as issued.

The facts

Issued
Jul 7, 2002, 10:01 PM CDT (03:01 UTC)
Expired
Jul 8, 2002, 4:00 AM CDT
In force
6 hr
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Douglas County, MN, Morrison County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 165 km from the middle of the area, began a volume at 03:02 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, 3.0 hours before the alert went out and 164 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 2002-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2219 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2002-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.193958Sfc1 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
2219 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1249 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KMPX 080301
FFWMSP
MNC041-097-153-080900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1000 PM CDT SUN JUL 7 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  TODD COUNTY IN CENTRAL MINNESOTA
  MORRISON COUNTY IN CENTRAL MINNESOTA
  DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA

* UNTIL 400 AM CDT

* AT 1000 PM CDT...RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY
  RAIN FROM JUST WEST OF ALEXANDRIA TO CAMP RIPLEY...WHICH IS JUST
  NORTH OF LITTLE FALLS. THUNDERSTORMS WILL CONTINUOUSLY REDEVELOP
  ACROSS THIS AREA...RESULTING IN THREE TO SIX INCHES OF RAINFALL.

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.

LAT...LON 4635 9387 4582 9382 4578 9578 4639 9578

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 7:37 PM CDTSevere Thunderstorm WarningMPXStearns, Wright38 min
Jul 7, 8:49 PM CDTSevere Thunderstorm WarningMPXStearns, Todd41 min
Jul 7, 10:41 PM CDTSevere Thunderstorm WarningMPXDouglas, Todd49 min
Jul 8, 4:21 AM CDTFlash Flood WarningMPXKanabec114 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.