Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 63, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jul 17, 2001, 10:24 PM CDT for Aitkin County, Minnesota. It was in force for 66 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 17, 2001, 10:24 PM CDT (03:24 UTC)
- Expired
- Jul 17, 2001, 11:30 PM CDT
- In force
- 66 min
- Issued by
- NWS Duluth, MN
- Area
- Whole counties
County Aitkin County, MN
The radar
The Duluth radar (KDLH), 95 km from the middle of the area, began a volume at 03:26 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 17, 10:45 PM CDT | Thunderstorm Wind 52 M | Hill City, MN | Several trees were blown down. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 17, 7:00 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 3.4 hours before the alert went out and 196 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
- 4439 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 1233 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 4.8
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 Jul 17, 3:15 PM CDT, 7 hours 9 minutes earlier.
Area forecast discussion, Jul 17, 3:15 PM CDT, 7 hours 9 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DULUTH MN 315 PM CDT TUE JUL 17 2001 LITTLE CHANGE IN ON-GOING FORECAST SCHEME WITH SCATTERED THUNDERSTORMS EXPECTED THROUGH THE PERIOD IN UNSTABLE ATMOSPHERE. NO REAL BIG KICKER IN THE WORKS...SOME S/WVS COMING OVER TOP OF SLOWLY WEAKENING RIDGE...BUT NOTHING THAT MODELS CAN REALLY AGREE ON. WHAT CAN BE AGREED UPON IS CONTINUED WARM AND HUMID WEATHER PATTERN TO WITH SOME RESPITE FOUND NEAR THE SHORES OF LAKE SUPERIOR. COLD FRONT COMING THROUGH ON THURSDAY AFTERNOON/EVENING. ETA FASTEST WITH THIS FEATURE...BUT TOO FAR AHEAD TO PIN DOWN MORE PRECISE TIMING. FOLLOWED GENERAL FORECAST NUMBERS. .DLH...NONE. CLC
In the hours before
Local storm report, Jul 17, 8:41 PM CDT, 1 hour 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH, MN
841 PM CDT TUE JUL 17 2001
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0520 PM CASS LAKE MN .75 INCH HAIL
07/17/01 CASS
0728 PM NORTHOME MN 1.00 INCH HAIL
07/17/01 KOOCHICHING
0825 PM PILLAGER MNt 60 MPH TSTM WIND GUST
07/17/01 CASS
0825 PM LAKESHORE MN 60 MPH TSTM WIND GUST
07/17/01 CASS
DLTLocal storm report, Jul 17, 9:45 PM CDT, 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH, MN
945 PM CDT TUE JUL 17 2001
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0520 PM CASS LAKE MN .75 INCH HAIL
07/17/01 CASS
0728 PM NORTHOME MN 1.00 INCH HAIL
07/17/01 KOOCHICHING
0825 PM PILLAGER MN 60 MPH TSTM WIND GUST
07/17/01 CASS
0825 PM LAKESHORE MN 60 MPH TSTM WIND GUST
07/17/01 CASS
0858 PM BAXTER MN 1.00 INCH HAIL
07/17/01 CROW WING
0858 PM BAXTER MN 58 MPH TSTM WIND GUST
07/17/01 CROW WING POWER OUTAGES
0910 PM FT. RIPLEY MN .88 INCH HAIL
07/17/01 CROW WING
0923 PM WALKER MN .75 INCH HAIL
07/17/01 CASS
0935 PM BENA MN 1.75 INCH HAIL
07/17/01 CASS
0935 PM BENA MN 60 MPH TSTM WIND GUST
07/17/01 CASS
DLTThe office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 7:03 PM CDT | Tornado Warning | DLH | Itasca, Koochiching | 42 min |
| Jul 17, 7:45 PM CDT | Tornado Warning | DLH | Cass | 45 min |
| Jul 17, 8:29 PM CDT | Tornado Warning | DLH | Cass | 31 min |
| Jul 17, 8:45 PM CDT | Severe Thunderstorm Warning | DLH | Crow Wing | 30 min |
| Jul 17, 9:16 PM CDT | Severe Thunderstorm Warning | DLH | Cass | 59 min |
| Jul 17, 9:34 PM CDT | Severe Thunderstorm Warning | DLH | Crow Wing | 56 min |
| Jul 17, 9:53 PM CDT | Tornado Warning | DLH | Cass | 52 min |
| Jul 17, 10:49 PM CDT | Severe Thunderstorm Warning | DLH | Pine | 56 min |
| Jul 17, 11:26 PM CDT | Severe Thunderstorm Warning | DLH | Burnett | 64 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.