Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 23, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 18, 2002, 2:05 AM CDT for Blue Earth County, Le Sueur County, Minnesota. It was in force for 25 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 18, 2002, 2:05 AM CDT (07:05 UTC)
- Expired
- Apr 18, 2002, 2:30 AM CDT
- In force
- 25 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
Counties Blue Earth County, MN, Le Sueur County, MN
The radar
The Minneapolis radar (KMPX), 80 km from the middle of the area, began a volume at 07:04 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 |
|---|---|---|---|
| Apr 18, 2:25 AM CDT | Hail 1 | St Henry, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 18, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 7.1 hours before the alert went out and 80 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
- 2104 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 146 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 180705 SVRMSP MNC013-079-180745- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 205 AM CDT THU APR 18 2002 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA * UNTIL 230 AM CDT * AT 205 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL 7 MILES SOUTHWEST OF ST CLAIR...OR ABOUT 12 MILES SOUTH OF MANKATO...MOVING NORTHEAST AT 50 MPH. * SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE... CLEVELAND. EAGLE LAKE. LE CENTER. MADISON LAKE. MANKATO. ST CLAIR. LAT...LON 4397 9409 4389 9386 4448 9371 4454 9384
1 follow-up statement
000 WUUS53 KMPX 180705 CCA SVRMSP MNC013-079-180730- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 205 AM CDT THU APR 18 2002 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA * UNTIL 230 AM CDT * AT 205 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL 7 MILES SOUTHWEST OF ST CLAIR...OR ABOUT 12 MILES SOUTH OF MANKATO...MOVING NORTHEAST AT 50 MPH. * SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE... CLEVELAND. EAGLE LAKE. LE CENTER. MADISON LAKE. MANKATO. ST CLAIR. LAT...LON 4397 9409 4389 9386 4448 9371 4454 9384
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 12:37 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa | 23 min |
| Apr 18, 12:50 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 40 min |
| Apr 18, 12:56 AM CDT | Severe Thunderstorm Warning | MPX | Blue Earth | 34 min |
| Apr 18, 1:12 AM CDT | Severe Thunderstorm Warning | MPX | Yellow Medicine | 18 min |
| Apr 18, 1:20 AM CDT | Severe Thunderstorm Warning | MPX | Stearns | 25 min |
| Apr 18, 1:25 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin | 35 min |
| Apr 18, 1:29 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Renville, Sibley | 31 min |
| Apr 18, 1:34 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 26 min |
| Apr 18, 1:38 AM CDT | Severe Thunderstorm Warning | MPX | Nicollet | 22 min |
| Apr 18, 1:47 AM CDT | Severe Thunderstorm Warning | MPX | Sherburne | 28 min |
| Apr 18, 1:51 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Renville | 39 min |
| Apr 18, 2:00 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 30 min |
| Apr 18, 2:01 AM CDT | Severe Thunderstorm Warning | MPX | Isanti | 29 min |
| Apr 18, 2:03 AM CDT | Severe Thunderstorm Warning | MPX | Nicollet, Sibley | 27 min |
| Apr 18, 2:08 AM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn, Waseca | 37 min |
| Apr 18, 2:13 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Scott | 32 min |
| Apr 18, 2:17 AM CDT | Severe Thunderstorm Warning | MPX | Meeker | 28 min |
| Apr 18, 2:21 AM CDT | Severe Thunderstorm Warning | MPX | Douglas | 39 min |
| Apr 18, 2:28 AM CDT | Severe Thunderstorm Warning | MPX | Hennepin | 32 min |
| Apr 18, 2:32 AM CDT | Severe Thunderstorm Warning | MPX | Le Sueur | 13 min |
| Apr 18, 2:37 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Renville | 23 min |
| Apr 18, 2:42 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Scott | 33 min |
| Apr 18, 2:48 AM CDT | Severe Thunderstorm Warning | MPX | Meeker, Wright | 27 min |
| Apr 18, 2:58 AM CDT | Severe Thunderstorm Warning | MPX | Isanti, Kanabec, Mille Lacs, Sherburne | 47 min |
| Apr 18, 3:01 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin, Ramsey | 44 min |
| Apr 18, 3:04 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Todd | 41 min |
| Apr 18, 3:07 AM CDT | Severe Thunderstorm Warning | MPX | McLeod | 23 min |
| Apr 18, 3:13 AM CDT | Severe Thunderstorm Warning | MPX | Carver | 47 min |
| Apr 18, 3:17 AM CDT | Severe Thunderstorm Warning | MPX | Dakota, Washington | 43 min |
| Apr 18, 3:19 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 26 min |
| Apr 18, 3:31 AM CDT | Severe Thunderstorm Warning | MPX | McLeod | 14 min |
| Apr 18, 3:40 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin, Wright | 50 min |
| Apr 18, 3:49 AM CDT | Severe Thunderstorm Warning | MPX | Chisago, Isanti | 41 min |
| Apr 18, 3:58 AM CDT | Severe Thunderstorm Warning | MPX | Dakota, Washington | 32 min |
| Apr 18, 4:04 AM CDT | Severe Thunderstorm Warning | MPX | Ramsey | 26 min |
| Apr 18, 4:30 AM CDT | Severe Thunderstorm Warning | MPX | Washington | 30 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2002Every severe thunderstorm warning in 2002
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.