Alert archive / Michigan / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 21, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jun 8, 2009, 8:42 PM EDT for Lapeer County, Michigan. It was in force for 49 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
- Jun 8, 2009, 8:42 PM EDT (00:42 UTC)
- Expired
- Jun 8, 2009, 9:31 PM EDT
- In force
- 49 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
County Lapeer County, MI
The radar
The Detroit radar (KDTX), 41 km from the middle of the area, began a volume at 00:43 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 |
|---|---|---|---|
| Jun 8, 4:02 PM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 0.7 hours before the alert went out and 37 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
- 786 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 535 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 376 m²/s²
- 0-3 km storm-relative helicity
- 396 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KDTX 090042 SVRDTX MIC087-090200- /O.NEW.KDTX.SV.W.0021.090609T0042Z-090609T0200Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 842 PM EDT MON JUN 8 2009 THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LAPEER COUNTY IN SOUTHEAST MICHIGAN... * UNTIL 1000 PM EDT * AT 840 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM DAVISON TO GRAND BLANC...AND MOVING EAST AT 25 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS. * SEVERE THUNDERSTORMS WILL BE NEAR... LAPEER AROUND 855 PM EDT. HADLEY AROUND 900 PM EDT. NORTH BRANCH AROUND 910 PM EDT. LUM AND METAMORA AROUND 915 PM EDT. IMLAY CITY AND DRYDEN AROUND 935 PM EDT. ALMONT AROUND 950 PM EDT. THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS... THORNVILLE... ELBA... KINGS MILL... GOODLAND TOWNSHIP... BURNSIDE... ATTICA... PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4288 8345 4322 8346 4329 8300 4290 8298 TIME...MOT...LOC 0042Z 264DEG 22KT 4307 8342 4288 8360 $$ MANN
2 follow-up statements
000 WWUS53 KDTX 090107 RRA SVSDTX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 907 PM EDT MON JUN 8 2009 MIC087-090200- /O.CON.KDTX.SV.W.0021.000000T0000Z-090609T0200Z/ LAPEER MI- 908 PM EDT MON JUN 8 2009 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT FOR LAPEER COUNTY... AT 907 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NORTH BRANCH TO THORNVILLE...MOVING EAST AT 30 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS. SEVERE THUNDERSTORMS WILL BE NEAR... IMLAY CITY AND DRYDEN AROUND 920 PM EDT. ALMONT AROUND 925 PM EDT. THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS... THORNVILLE... ELBA... KINGS MILL... GOODLAND TOWNSHIP... BURNSIDE... ATTICA... PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4288 8345 4322 8346 4329 8300 4290 8298 TIME...MOT...LOC 0108Z 267DEG 27KT 4319 8314 4290 8324 $$ MANN
000 WWUS53 KDTX 090131 SVSDTX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 931 PM EDT MON JUN 8 2009 MIC087-090141- /O.CAN.KDTX.SV.W.0021.000000T0000Z-090609T0200Z/ LAPEER MI- 931 PM EDT MON JUN 8 2009 ...THE SEVERE THUNDERSTORM WARNING FOR LAPEER COUNTY IS CANCELLED... THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF THE WARNED AREA...HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THESE THUNDERSTORMS. IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO WATCH REMAINS IN EFFECT UNTIL 10 PM EDT. LAT...LON 4288 8345 4322 8346 4329 8300 4290 8298 TIME...MOT...LOC 0131Z 267DEG 27KT 4320 8290 4291 8300 $$ MANN
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 8:13 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 47 min |
| Jun 8, 8:16 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 44 min |
| Jun 8, 8:40 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 52 min |
| Jun 8, 8:57 PM EDT | Tornado Warning | DTX | Lenawee | 48 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2009Every severe thunderstorm warning in 2009
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.