Alert archive / Minnesota / Tornado Watches in 2001

Tornado Watch 698

August 26, 200125 counties in Minnesota

The Storm Prediction Center issued this tornado watch at Aug 26, 2001, 5:30 PM CDT for 25 counties in Minnesota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Aug 26, 2001, 5:30 PM CDT (22:30 UTC)
Expired: Aug 26, 2001, 11:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 25 counties

Blue Earth County, MN, Brown County, MN, Chippewa County, MN, Cottonwood County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Sibley County, MN, Stearns County, MN, Swift County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 147 km from the middle of the area, began a volume at 22:30 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, 10.5 hours before the alert went out and 144 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2267 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

206 
WWUS9 KMKC 262220
SEL8  
MKC WW 262215
MNZ000-270400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 698
STORM PREDICTION CENTER NORMAN OK
515 PM CDT SUN AUG 26 2001

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   SOUTHERN MINNESOTA                          

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 530 PM UNTIL 1100
PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 65 MILES WEST OF REDWOOD FALLS MINNESOTA TO 55
MILES EAST OF REDWOOD FALLS MINNESOTA.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.


DISCUSSION...RAPID THUNDERSTORM DEVELOPMENT WILL OCCUR ALONG
SURFACE TROUGH AHEAD OF COLD FRONT MN/NERN SD BORDER.  WITH SBCAPES
TO 3000 J/KG AND STRONG VEERING SHEAR PROFILES...CONDITIONS ARE
FAVORABLE FOR SUPERCELLS AND ISOLATED TORNADOES. STORMS WILL
PROPAGATE SEWD ACROSS SRN MN IN NWLY FLOW PATTERN.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. 
MEAN STORM MOTION VECTOR 30030.


...HALES

453,0962 453,0935 433,0935 433,0962

Nearby

Tornado Watches in Minnesota, 2001 Every tornado watch in 2001

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.