Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 86, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Aug 8, 2001, 7:45 AM CDT for Cook County, Minnesota. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 8, 2001, 7:45 AM CDT (12:45 UTC)
- Expired
- Aug 8, 2001, 8:15 AM CDT
- In force
- 30 min
- Issued by
- NWS Duluth, MN
- Area
- Whole counties
County Cook County, MN
The radar
The Duluth radar (KDLH), 166 km from the middle of the area, began a volume at 12:44 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
International Fa, MN (KINL), launched 12:00Z, 0.8 hours before the alert went out and 221 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.
- Mixed-layer CAPE
- 389 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 1452 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Duluth, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 8, 2:30 AM CDT, 5 hours 15 minutes earlier.
Area forecast discussion, Aug 8, 2:30 AM CDT, 5 hours 15 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DULUTH MN 230 AM CDT WED AUG 8 2001 FORECAST CONCERNS ON MORNING CONVECTION...DAYTIME HEAT AND THEN CHANGE IN AIRMASS IN LATER PERIODS. MODELS OVERALL IN GENERAL AGREEMENT AND FOLLOWED WITH ETA/AVN BLEND. IR IMAGES SHOWING MCS HAVING GOOD STRUCTURE AS IT MOVES INTO NORTHWEST MINNESOTA. THICKNESS PACKING TAKES THIS COMPLEX SOUTHEAST THIS MORNING... AFFECTING MAINLY SOUTHWEST PORTION OF CWA. BOW NATURE OF THIS COMPLEX MAY KEEP IT A LITTLE FURTHER NORTH HOWEVER. BY MID MORNING CONVECTION DIMINISHES AS CAP BUILDS. HOT AND HUMID CONDITIONS WILL DOMINATE MUCH OF THE REGION. SURFACE FRONT BEGINS TO APPROACH THE AREA LATER IN THE DAY FOR THE CHANCE OF MORE CONVECTION...MAINLY NORTH. FRONT THEN MOVES SOUTHEAST TONIGHT. COOL AIR AT THE SURFACE A LITTLE OUT OF PHASE WITH UPPER LEVEL FEATURES...RESULTING IN LESSER AMOUNTS OF PRECIP. WILL KEEP BEST CHANCES ACROSS NORTHWEST AREAS. NORTHWEST WINDS THEN HELP TO SPREAD COOLER AND DRIER AIR SOUTHEASTWARD ON THURSDAY. WILL KEEP MORNING SHOWER CHANCES GOING FOR NORTHWEST WISCONSIN...BEFORE FRONT MOVES FURTHER SOUTH. NO MAJOR CHANCES MADE TO THE EXTENDED WITH COOLER NORTHWEST FLOW TO DOMINATE THROUGH THE WEEKEND. .DLH...NONE. TOMALAK
In the hours before
Special weather statement, Aug 8, 6:40 AM CDT, 1 hour 5 minutes before
MNZ011-019-037-038-WIZ001-081200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 640 AM CDT WED AUG 8 2001 THE NATIONAL WEATHER SERVICE HAS CANCELLED A PORTION OF SEVERE THUNDERSTORM WATCH NUMBER 661...THAT HAD BEEN IN EFFECT FOR PARTS OF NORTHEAST MINNESOTA UNTIL 1000 AM. THE WATCH HAS BEEN CANCELLED IN MINNESOTA FOR ST. LOUIS...CARLTON...PINE COUNTIES. THE WATCH HAS ALSO BEEN CANCELLED FOR DOUGLAS COUNTY IN WISCONSIN. THE THREAT OF SEVERE WEATHER HAS MOVED EAST OF THIS AREA. TOMALAK
Special weather statement, Aug 8, 7:45 AM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 3:22 AM CDT | Severe Thunderstorm Warning | DLH | Cass, Itasca | 53 min |
| Aug 8, 4:16 AM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Itasca | 44 min |
| Aug 8, 5:11 AM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 64 min |
| Aug 8, 5:35 AM CDT | Severe Thunderstorm Warning | DLH | Lake | 55 min |
| Aug 8, 6:22 AM CDT | Severe Thunderstorm Warning | DLH | Cook | 83 min |
| Aug 8, 3:34 PM CDT | Severe Thunderstorm Warning | DLH | Cass, Crow Wing | 56 min |
| Aug 8, 4:07 PM CDT | Severe Thunderstorm Warning | DLH | Itasca | 38 min |
| Aug 8, 4:16 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin | 44 min |
| Aug 8, 4:25 PM CDT | Severe Thunderstorm Warning | DLH | Cass, Crow Wing | 35 min |
| Aug 8, 4:29 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 61 min |
| Aug 8, 4:46 PM CDT | Severe Thunderstorm Warning | DLH | Itasca | 44 min |
| Aug 8, 5:00 PM CDT | Severe Thunderstorm Warning | DLH | Carlton | 60 min |
| Aug 8, 5:00 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Saint Louis | 60 min |
| Aug 8, 5:29 PM CDT | Severe Thunderstorm Warning | DLH | Lake | 61 min |
| Aug 8, 6:01 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 29 min |
| Aug 8, 6:30 PM CDT | Severe Thunderstorm Warning | DLH | Lake | 60 min |
| Aug 8, 5:36 AM CDT | Severe Thunderstorm Warning | DLH | Douglas | 39 min |
| Aug 8, 6:12 AM CDT | Severe Thunderstorm Warning | DLH | Bayfield | 33 min |
| Aug 8, 6:28 AM CDT | Severe Thunderstorm Warning | DLH | Ashland | 62 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2001Every severe thunderstorm warning 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.