Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 13, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 1, 2001, 5:49 PM CDT for Anoka County, Chisago County, Minnesota. It was in force for 41 min. 1 report came from 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, with what was reported inside it.
The facts
- Issued
- May 1, 2001, 5:49 PM CDT (22:49 UTC)
- Expired
- May 1, 2001, 6:30 PM CDT
- In force
- 41 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Anoka County, MN, Chisago County, MN
The radar
The Minneapolis radar (KMPX), 69 km from the middle of the area, began a volume at 22:52 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 |
|---|---|---|---|
| May 1, 5:55 PM CDT | Hail 4 | Wyoming, MN | Numerous cars and structures damaged. |
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 |
|---|---|---|---|
| May 1, 3:00 PM CDT | Tornado Watch | SPC | 6 hr |
| May 1, 5:00 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 10.8 hours before the alert went out and 71 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 771 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 012250 SVRMSP MNC003-025-012330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 549 PM CDT TUE MAY 1 2001 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN ANOKA COUNTY IN EAST CENTRAL MINNESOTA CHISAGO COUNTY IN EAST CENTRAL MINNESOTA * UNTIL 630 PM CDT * AT 549 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 7 MILES SOUTHWEST OF WYOMING...OR ABOUT 20 MILES SOUTH OF CAMBRIDGE...MOVING NORTHEAST AT 20 MPH. * SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE... WYOMING. STACY. NORTH BRANCH. A TORN ADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER... SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4538 9321 4518 9309 4531 9296 4559 9290
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 7:29 PM CDT | Severe Thunderstorm Warning | MPX | Martin | 61 min |
| May 1, 4:24 PM CDT | Severe Thunderstorm Warning | MPX | Carver, McLeod, Sibley | 51 min |
| May 1, 4:36 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault | 39 min |
| May 1, 4:36 PM CDT | Severe Thunderstorm Warning | MPX | Le Sueur | 39 min |
| May 1, 4:50 PM CDT | Tornado Warning | MPX | Blue Earth | 25 min |
| May 1, 4:55 PM CDT | Tornado Warning | MPX | Carver | 35 min |
| May 1, 5:06 PM CDT | Severe Thunderstorm Warning | MPX | Waseca | 39 min |
| May 1, 5:13 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin | 47 min |
| May 1, 5:18 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn | 42 min |
| May 1, 5:21 PM CDT | Tornado Warning | MPX | Anoka, Hennepin | 24 min |
| May 1, 5:27 PM CDT | Severe Thunderstorm Warning | MPX | Steele | 48 min |
| May 1, 5:35 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Ramsey, Washington | 55 min |
| May 1, 5:37 PM CDT | Tornado Warning | MPX | Waseca | 23 min |
| May 1, 6:03 PM CDT | Tornado Warning | MPX | Steele, Waseca | 42 min |
| May 1, 6:31 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.