Alert archive / Minnesota / Flash Flood Warnings in 2002

Flash Flood Warning 26, NWS Twin Cities, MN

July 28, 2002McLeod County, Sibley County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Jul 28, 2002, 5:43 PM CDT for McLeod County, Sibley County, Minnesota. It was in force for 2 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 28, 2002, 5:43 PM CDT (22:43 UTC)
Expired: Jul 28, 2002, 8:00 PM CDT
In force: 2 hr
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties McLeod County, MN, Sibley County, MN

The radar

The Minneapolis radar (KMPX), 67 km from the middle of the area, began a volume at 22:45 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, 10.7 hours before the alert went out and 65 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: 1056 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 1511 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KMPX 282243
FFWMSP
MNC085-143-290100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
540 PM CDT SUN JUL 28 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MCLEOD COUNTY IN CENTRAL MINNESOTA
  SIBLEY COUNTY IN CENTRAL MINNESOTA

* UNTIL 800 PM CDT

* AT 540 PM CDT...RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN 
OVER GLENCOE...NEW AUBURN AND BROWTON. RAINS WILL CONTINUE UNTIL 630 
PM CDT. THUNDERSTORMS WILL DUMP UP TO ANOTHER TWO INCHES OF RAIN IN 
THE AREA.

*

ABSOLUTELY 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 4457 9460 4447 9433 4469 9401 4487 9426

$$
EDWARDS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 3:39 PM CDT	Severe Thunderstorm Warning	MPX	Redwood	51 min
Jul 28, 4:07 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur	38 min
Jul 28, 4:13 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet, Sibley	47 min
Jul 28, 4:17 PM CDT	Severe Thunderstorm Warning	MPX	Renville	58 min
Jul 28, 4:28 PM CDT	Severe Thunderstorm Warning	MPX	Redwood	32 min
Jul 28, 4:32 PM CDT	Severe Thunderstorm Warning	MPX	Rice	43 min
Jul 28, 4:58 PM CDT	Severe Thunderstorm Warning	MPX	Scott	47 min
Jul 28, 5:21 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Nicollet	54 min
Jul 28, 5:22 PM CDT	Severe Thunderstorm Warning	MPX	Dakota	38 min
Jul 28, 5:41 PM CDT	Tornado Warning	MPX	Nicollet	34 min
Jul 28, 5:43 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	47 min
Jul 28, 5:45 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Sibley	45 min
Jul 28, 5:46 PM CDT	Severe Thunderstorm Warning	MPX	Scott	44 min
Jul 28, 5:49 PM CDT	Tornado Warning	MPX	Goodhue	26 min
Jul 28, 6:06 PM CDT	Flash Flood Warning	MPX	Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more	3 hr
Jul 28, 6:11 PM CDT	Severe Thunderstorm Warning	MPX	Waseca	49 min
Jul 28, 6:23 PM CDT	Severe Thunderstorm Warning	MPX	Rice	52 min
Jul 28, 6:34 PM CDT	Severe Thunderstorm Warning	MPX	Steele	41 min
Jul 28, 6:39 PM CDT	Tornado Warning	MPX	Rice	36 min
Jul 28, 6:50 PM CDT	Tornado Warning	MPX	Goodhue	25 min

Nearby

Flash Flood Warnings in Minnesota, 2002 Every 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.