Alert archive / Minnesota / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 60, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 18, 2004, 7:02 PM CDT for Nicollet County, Minnesota. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 18, 2004, 7:02 PM CDT (00:02 UTC)
- Expired
- Apr 18, 2004, 8:00 PM CDT
- In force
- 58 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Nicollet County, MN
The radar
The Minneapolis radar (KMPX), 79 km from the middle of the area, began a volume at 00:03 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 |
|---|---|---|---|
| Apr 18, 6:35 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 0.0 hours before the alert went out and 77 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
- 671 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 2341 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 244 m²/s²
- 0-3 km storm-relative helicity
- 328 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 190002 RRA SVRMPX MNC103-190100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 702 PM CDT SUN APR 18 2004 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA * UNTIL 800 PM CDT * AT 702 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 9 MILES WEST OF LAFAYETTE...OR ABOUT 8 MILES NORTHWEST OF NEW ULM...MOVING EAST AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... LAFAYETTE. THIS IS A DANGEROUS STORM...STAY INDOORS AWAY FROM WINDOWS. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4445 9464 4433 9444 4434 9400 4446 9399 $$ RAH/SEB
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 7:02 PM CDT | Severe Thunderstorm Warning | MPX | Chisago | 43 min |
| Apr 18, 7:12 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Scott | 63 min |
| Apr 18, 7:13 PM CDT | Severe Thunderstorm Warning | MPX | Ramsey, Washington | 47 min |
| Apr 18, 7:19 PM CDT | Severe Thunderstorm Warning | MPX | Sibley | 41 min |
| Apr 18, 7:22 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault | 53 min |
| Apr 18, 7:29 PM CDT | Severe Thunderstorm Warning | MPX | Martin | 61 min |
| Apr 18, 7:33 PM CDT | Severe Thunderstorm Warning | MPX | Carver | 42 min |
| Apr 18, 7:45 PM CDT | Severe Thunderstorm Warning | MPX | Le Sueur, Rice | 60 min |
| Apr 18, 7:54 PM CDT | Tornado Warning | MPX | Scott | 36 min |
| Apr 18, 8:04 PM CDT | Tornado Warning | MPX | Dakota | 26 min |
| Apr 18, 8:17 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn, Steele, Waseca | 58 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2004Every severe thunderstorm warning in 2004
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.