Alert archive / Minnesota / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 521

July 1, 20007 counties in Minnesota

The Storm Prediction Center issued this severe thunderstorm watch at Jul 1, 2000, 5:30 PM CDT for 7 counties in Minnesota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 1, 2000, 5:30 PM CDT (22:30 UTC)
Expired
Jul 1, 2000, 11:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Beltrami County, MN, Cook County, MN, Itasca County, MN, Koochiching County, MN, Lake County, MN, Lake of the Woods County, MN, Saint Louis County, MN

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 1, 5:30 PM CDTSevere Thunderstorm WarningDLHLake30 min
Jul 1, 5:55 PM CDTSevere Thunderstorm WarningDLHSaint Louis35 min
Jul 1, 6:15 PM CDTSevere Thunderstorm WarningDLHLake, Saint Louis60 min
Jul 1, 6:22 PM CDTTornado WarningDLHLake, Saint Louis38 min
Jul 1, 6:50 PM CDTSevere Thunderstorm WarningDLHSaint Louis55 min
Jul 1, 7:00 PM CDTSevere Thunderstorm WarningDLHLake60 min
Jul 1, 7:08 PM CDTTornado WarningDLHLake52 min

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 10.5 hours before the alert went out and 51 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, International Fa, MN at 12:00Z on 2000-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 39 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 12:00Z on 2000-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 166 square meters per square second.19395878Sfc1 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
39 J/kg
Mixed-layer CIN
-226 J/kg
Mixed-layer LCL
1275 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
166 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

264 
WWUS9 KMKC 012209
SEL1  
MKC WW 012202
MNZ000-LSZ000-020400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 521
STORM PREDICTION CENTER NORMAN OK
502 PM CDT SAT JUL 1 2000

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

   NORTHERN MINNESOTA                          
   WESTERN LAKE SUPERIOR                      

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 530 PM UNTIL
1100 PM 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
NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTH SOUTHWEST OF WARROAD
MINNESOTA TO 105 MILES EAST SOUTHEAST OF ELY 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.

OTHER WATCH INFORMATION...  CONTINUE...WW 519...WW 520...

DISCUSSION...THUNDERSTORMS DEVELOPING ALONG WARM FRONT ARE EXPECTED
TO BECOME SEVERE. DEEP LAYER SHEAR IS FAVROABEL FOR SUPERCELLS...
WHICH WILL AUGMENT THE HAIL/WIND THREAT.

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 500.  MEAN STORM
MOTION VECTOR 28025.


...VESCIO

463,0894 474,0954 490,0954 480,0894

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 30, 7:15 PM CDTSevere Thunderstorm WatchSPCBeltrami, Clearwater, Itasca, Kittson, Koochiching, Lake and 7 more6 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 2000Every severe thunderstorm watch in 2000

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.