Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 184, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 23, 2001, 1:48 AM CDT for Stevens County, Swift County, Minnesota. It was in force for 42 min. 2 reports 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
- Jul 23, 2001, 1:48 AM CDT (06:48 UTC)
- Expired
- Jul 23, 2001, 2:30 AM CDT
- In force
- 42 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Stevens County, MN, Swift County, MN
The radar
The Aberdeen radar (KABR), 171 km from the middle of the area, began a volume at 06:49 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 23, 2:15 AM CDT | Thunderstorm Wind 55 E | Alberta, MN | Grain bin dented, roof off pole barn. |
| Jul 23, 2:16 AM CDT | Thunderstorm Wind 62 M | Morris Arpt, MN |
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 nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 6.8 hours before the alert went out and 182 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
- 2747 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1276 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 13.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 230649 SVRMSP MNC149-151-230730- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 148 AM CDT MON JUL 23 2001 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SWIFT COUNTY IN WEST CENTRAL MINNESOTA STEVENS COUNTY IN WEST CENTRAL MINNESOTA * UNTIL 230 AM CDT * AT 148 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH DAMAGING WINDS 12 MILES SOUTHWEST OF CHOKIO...OR ABOUT 12 MILES NORTH OF ORTONVILLE...MOVING EAST AT 35 MPH. * SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE... MORRIS. HOLLOWAY. CHOKIO. ALBERTA. HANCOCK. APPLETON. BwENSON. LAT...LON 4557 9649 4539 9651 4520 9581 4565 9580
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 9:29 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Lac qui Parle | 46 min |
| Jul 23, 2:29 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Pope, Stearns, Swift | 61 min |
| Jul 23, 3:13 AM CDT | Severe Thunderstorm Warning | MPX | Meeker, Stearns | 47 min |
| Jul 23, 5:11 AM CDT | Severe Thunderstorm Warning | MPX | Brown, Nicollet | 49 min |
| Jul 23, 5:17 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Isanti | 28 min |
| Jul 23, 5:42 AM CDT | Severe Thunderstorm Warning | MPX | Blue Earth | 48 min |
| Jul 23, 6:04 AM CDT | Severe Thunderstorm Warning | MPX | Le Sueur | 41 min |
| Jul 23, 7:31 AM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 44 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.