Alert archive / Minnesota / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 445

June 19, 200221 counties in Minnesota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 19, 2002, 8:00 PM CDT for 21 counties in Minnesota. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Jun 19, 2002, 8:00 PM CDT (01:00 UTC)
Expired: Jun 20, 2002, 12:00 AM CDT
In force: 4 hr
Issued by: the Storm Prediction Center

All 21 counties

Aitkin County, MN, Benton County, MN, Cass County, MN, Chippewa County, MN, Crow Wing County, MN, Itasca County, MN, Kanabec County, MN, Kandiyohi County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Pope County, MN, Renville County, MN, Saint Louis County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Todd County, MN, Wright County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 126 km from the middle of the area, began a volume at 01:02 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.

Warnings issued inside it

5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 19, 8:31 PM CDT	Tornado Warning	MPX	Stearns	29 min
Jun 19, 8:34 PM CDT	Severe Thunderstorm Warning	MPX	Morrison	56 min
Jun 19, 9:08 PM CDT	Tornado Warning	MPX	Benton, Stearns	37 min
Jun 19, 10:55 PM CDT	Severe Thunderstorm Warning	MPX	Wright	35 min
Jun 19, 11:35 PM CDT	Severe Thunderstorm Warning	MPX	McLeod	40 min

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.0 hours before the alert went out and 124 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: 2056 J/kg
Mixed-layer CIN: -253 J/kg
Mixed-layer LCL: 1172 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 340 m²/s²
0-3 km storm-relative helicity: 424 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 200030
SEL5  
SPC WW 200026
MNZ000-200500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 445
STORM PREDICTION CENTER NORMAN OK
726 PM CDT WED JUN 19 2002

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   MINNESOTA                          

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 800 PM
UNTIL MIDNIGHT CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 50 STATUTE MILES
EAST AND WEST OF A LINE FROM REDWOOD FALLS MINNESOTA TO 20 MILES
NORTHWEST OF HIBBING MINNESOTA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.  SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.

OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
TORNADO WATCH NUMBER 441.  WATCH NUMBER 441 WILL NOT BE IN EFFECT
AFTER 800 PM CDT.  CONTINUE...WW 442...WW 443...WW 444...

DISCUSSION...SEVERE THUNDERSTORMS WESTERN MN EXPECTED TO CONTINUE
A THREAT EWD FOR NEXT SEVERAL HOURS AS AIR MASS THIS AREA QUITE
UNSTABLE.  WITH THE STRONG S/WV TROUGH ROTATING NEWD ACROSS NRN
PLAINS...DEEP LAYER SHEAR REMAINS FAVORABLE FOR SEVERE STORMS.  00Z
SOUNDING AT MPX UNSTABLE BUT SOMEWHAT CAPPED WHICH SHOULD
EVENTUALLY LIMIT SEVERE POTENTIAL LATER THIS EVENING AS STORMS
CONTINUE EWD.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.  MEAN STORM
MOTION VECTOR 23040.


...HALES

473,0920 443,0940 443,0960 473,0941

Nearby

Severe Thunderstorm Watches in Minnesota, 2002 Every severe thunderstorm watch 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.