Alert archive / Michigan / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 113, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Aug 21, 2003, 9:44 PM EDT for Lapeer County, Michigan. It was in force for 46 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
- Aug 21, 2003, 9:44 PM EDT (01:44 UTC)
- Expired
- Aug 21, 2003, 10:30 PM EDT
- In force
- 46 min
- Issued by
- NWS Detroit, MI
- Area
- Counties, with a storm outline in the text
County Lapeer County, MI
The radar
The Detroit radar (KDTX), 59 km from the middle of the area, began a volume at 01:46 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 nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 1.7 hours before the alert went out and 56 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
- 3445 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1295 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 239 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 2.2
- Supercell composite
- 16.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KDTX 220144 SVRDTX MIC087-220230- BULLETIN - EAS ACTIVATION/IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 943 PM EDT THU AUG 21 2003 THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LAPEER COUNTY IN SOUTHEAST MICHIGAN * UNTIL 1030 PM EDT * AT 943 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES WEST OF KINGS MILL...OR 8 MILES NORTH OF LAPEER...MOVING EAST AT 35 MPH. THIS SEVERE THUNDERSTORM HAS THE POTENTIAL OF PRODUCING WINDS UP TO 70 MPH HAIL UP TO GOLF BALL SIZE. * THE SEVERE THUNDERSTORM WILL BE NEAR... KINGS MILL...NORTH BRANCH AT 950 PM EDT BURNSIDE...GOODLAND TOWNSHIP AT 1000 PM EDT TAKE COVER IN A SUBSTANTIAL SHELTER UNTIL THE STORM HAS PASSED. LAT...LON 4325 8333 4309 8330 4309 8300 4328 8301 $$ OKEEFE JB
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 8:06 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 54 min |
| Aug 21, 8:19 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 41 min |
| Aug 21, 8:21 PM EDT | Special Marine Warning | DTX | 69 min | |
| Aug 21, 8:31 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 59 min |
| Aug 21, 8:47 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 43 min |
| Aug 21, 8:48 PM EDT | Special Marine Warning | DTX | 27 min | |
| Aug 21, 8:51 PM EDT | Tornado Warning | DTX | Livingston | 54 min |
| Aug 21, 9:54 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 66 min |
| Aug 21, 10:11 PM EDT | Tornado Warning | DTX | Washtenaw | 64 min |
| Aug 21, 10:59 PM EDT | Special Marine Warning | DTX | 46 min | |
| Aug 21, 11:06 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 54 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2003Every severe thunderstorm warning in 2003
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.