Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 223, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 29, 2001, 11:02 PM CDT for Anoka County, Sherburne County, Minnesota. It was in force for 43 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 29, 2001, 11:02 PM CDT (04:02 UTC)
- Expired
- Aug 29, 2001, 11:45 PM CDT
- In force
- 43 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Anoka County, MN, Sherburne County, MN
The radar
The Minneapolis radar (KMPX), 57 km from the middle of the area, began a volume at 04:03 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 |
|---|---|---|---|
| Aug 29, 7:30 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 4.0 hours before the alert went out and 57 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
- 1904 J/kg
- Mixed-layer CIN
- -172 J/kg
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 390 m²/s²
- 0-3 km storm-relative helicity
- 463 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 13.8
The text
As transmitted, in the capitals the NWS used until 2016.
068 WUUS53 KMPX 300403 SVRMSP MNC003-141-300445- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1102 PM CDT WED AUG 29 2001 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ANOKA COUNTY IN EAST CENTRAL MINNESOTA EASTERN SHERBURNE COUNTY IN CENTRAL MINNESOTA * UNTIL 1145 PM CDT * AT 1102 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS OVER ELK RIVER...OR ABOUT 17 MILES SOUTH OF PRINCETON...MOVING EAST AT 30 MPH. * SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE... ELK RIVER. EAST BETHEL. COON RAPIDS. BLAINE. THIS IS A DANGEROUS STORM...STAY INDOORS AWAY FROM WINDOWS. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. $$
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 Twin Cities, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 29, 9:00 PM CDT, 2 hours 2 minutes earlier.
Area forecast discussion, Aug 29, 9:00 PM CDT, 2 hours 2 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 9 PM CDT WED AUG 29 2001 LITTLE TO ADD...WATCHES EXPIRING WESTERN CWA WITH ACTIVE WATCHES THROUGH MOST OF REMAINDER OF MN CWA. UPPER TROUGH REMAINS TO MOVE THROUGH AREA. MINOR MODIFICATIONS TO GOING FORECAST. .MSP...NONE.
In the hours before
Special weather statement, Aug 29, 10:40 PM CDT, 22 minutes before
MNZ043-049-050-300415- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1040 PM CDT WED AUG 29 2001 ...UPDATE ON SEVERE THUNDERSTORM WATCH 702... THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR MORRISON... STEARNS AND BENTON COUNTY. THE REMAINDER OF EAST CENTRAL MINNESOTA REMAINS IN THE WATCH UNTIL MIDNIGHT.
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 7:19 PM CDT | Severe Thunderstorm Warning | MPX | Douglas, Todd | 41 min |
| Aug 29, 7:46 PM CDT | Severe Thunderstorm Warning | MPX | Pope, Stearns | 44 min |
| Aug 29, 8:00 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Swift | 45 min |
| Aug 29, 8:29 PM CDT | Severe Thunderstorm Warning | MPX | Stearns | 46 min |
| Aug 29, 8:33 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle | 27 min |
| Aug 29, 10:31 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue, Rice | 59 min |
| Aug 29, 10:31 PM CDT | Severe Thunderstorm Warning | MPX | Steele, Waseca | 59 min |
| Aug 29, 10:46 PM CDT | Severe Thunderstorm Warning | MPX | Washington | 29 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.