Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 178, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 18, 2001, 12:55 AM CDT for Wright County, Minnesota. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jul 18, 2001, 12:55 AM CDT (05:55 UTC)
- Expired
- Jul 18, 2001, 1:45 AM CDT
- In force
- 50 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Wright County, MN
The radar
The Minneapolis radar (KMPX), 46 km from the middle of the area, began a volume at 05:58 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 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, 9:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 5.9 hours before the alert went out and 44 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
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 180557 SVRMSP MNC171-180645- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1255 AM CDT WED JUL 18 2001 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WRIGHT COUNTY IN MINNESOTA * UNTIL 145 AM CDT * AT 1255 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 4 MILES SOUTH OF HOWARD LAKE...OR ABOUT 18 MILES NORTHEAST OF HUTCHINSON...MOVING EAST AT 30 MPH. * SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE... WAVERLY. MONTROSE. HOWARD LAKE. BUFFALO. LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM. TAKE COVER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS. LAT...LON 4516 9417 4501 9420 4502 9380 4528 9370
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 8:10 PM CDT | Severe Thunderstorm Warning | MPX | Morrison | 35 min |
| Jul 17, 8:37 PM CDT | Tornado Warning | MPX | Morrison | 23 min |
| Jul 17, 8:57 PM CDT | Severe Thunderstorm Warning | MPX | Morrison | 48 min |
| Jul 17, 10:05 PM CDT | Severe Thunderstorm Warning | MPX | Douglas, Todd | 40 min |
| Jul 17, 10:25 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Mille Lacs | 50 min |
| Jul 17, 10:31 PM CDT | Severe Thunderstorm Warning | MPX | Kanabec | 44 min |
| Jul 18, 1:11 AM CDT | Severe Thunderstorm Warning | MPX | Carver | 49 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.