Alert archive / Michigan / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 102, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Aug 9, 2011, 4:44 PM EDT for Monroe County, Washtenaw County, Michigan. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 9, 2011, 4:44 PM EDT (20:44 UTC)
- Expired
- Aug 9, 2011, 5:16 PM EDT
- In force
- 32 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Monroe County, MI, Washtenaw County, MI
The radar
The Detroit radar (KDTX), 70 km from the middle of the area, began a volume at 20:46 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 12:00Z, 8.7 hours before the alert went out and 73 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
- 22 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 628 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 9, 4:29 PM EDT, 15 minutes earlier.
Area forecast discussion, Aug 9, 4:29 PM EDT, 15 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
429 PM EDT TUE AUG 9 2011
.SHORT TERM...THIS EVENING AND TONIGHT
A COLD FRONT ASSOCIATED WITH A LOW OVER ONTARIO WILL CONTINUE TO DROP
ACROSS LOWER MICHIGAN THIS EVENING. RECENT RADAR IMAGERY IS SHOWING
SHOWERS AND THUNDERSTORMS TRACKING ACROSS MUCH OF LOWER MICHIGAN.
WHILE THE SEVERE THREAT APPEARS ISOLATED...SMALL HAIL AS WELL AS
HEAVY RAIN AND GUSTY WINDS WILL BE POSSIBLE AS THE STORMS CONTINUE
TO TRACK EASTWARD. THE MAJORITY OF THESE STORMS ARE FORECASTED TO
BE OUT OUR CWA BY 00Z...HOWEVER THERE WILL BE A CHANCE OF
LINGERING SHOWERS THROUGH THE OVERNIGHT PERIOD AS A SECONDARY COLD
FRONT DROPS ACROSS LOWER MICHIGAN. AFTER 06Z...THE MAIN THREAT OF
RAIN SHOWERS IS FORECASTED TO MOVE EASTWARD OVER LAKE HURON. WINDS
WILL REMAIN WESTERLY TO NORTHWESTERLY WITH GUSTS DIMINISHING
OVERNIGHT. TEMPERATURES OVERNIGHT WILL DECREASE RAPIDLY IN THE
EARLY EVENING AS THE FRONT PUSHES THROUGH SOUTHEAST MICHIGAN.
MINIMUM TEMPERATURES WILL BE IN THE LOW 60S ACROSS THE METRO
DETROIT AREA AND DROP INTO THE UPPER 50S IN THE THUMB AND SAGINAW
VALLEY REGIONS.
&&
.LONG TERM...WEDNESDAY THROUGH TUESDAY
COOLER AIR IS USHERED INTO THE AREA ON WEDNESDAY BEHIND THE COLD
FRONT WITH 850MB TEMPERATURES DIPPING DOWN TO 8-10C DURING THE
MORNING. CONDITIONS WILL FEEL NOTICEABLY DIFFERENT WITH HIGHS ONLY
REACHING THE LOW TO MID 70S WITH A BREEZY NORTHWEST WIND BRINGING LOWER
HUMIDITY VALUES FOR THE END OF THE WEEK. VISIBLE SATELLITE SHOWS A
HEALTHY STRATOCU FIELD UPSTREAM TODAY AND SIMILAR CLOUD CONDITIONS
CAN BE EXPECTED ACROSS SOUTHEAST MICHIGAN THROUGH MID AFTERNOON.
GOOD MIXING SHOULD HELP US TO TAP INTO THE MUCH DRIER AIR ALOFT TO
HELP CLOUDS START TO SCATTER OUT DURING THE LATE AFTERNOON. SKIES
SHOULD CLEAR OUT DURING THE EVENING MAKING FOR A COOL NIGHT WITH
TEMPERATURES OUTSIDE OF METRO DETROIT DROPPING INTO THE LOW 50S.
A SPRAWLING AREA OF HIGH PRESSURE BUILDING EAST ACROSS THE GREAT
LAKES REGION WILL KEEP CONDITIONS DRY ON THURSDAY AND FRIDAY.
TEMPERATURES WILL CREEP UP A FEW DEGREES EACH DAY WITH FULL
INSOLATION ON THURSDAY AND A GRADUAL INCREASE IN SOUTHWESTERLY
WINDS/RETURN FLOW ON FRIDAY.
JUST AS THE UPPER LEVEL FLOW STARTS TO RETURN TO A MORE ZONAL
PATTERN...ANOTHER WAVE DROPPING SOUTH OUT OF THE GULF OF ALASKA WILL
QUICKLY TRACK TOWARDS THE GREAT LAKES REGION...AND CARVE OUT ANOTHER
TROUGH OVER THE EASTERN UNITED STATES. RATHER STRONG MOISTURE
ADVECTION WILL OCCUR AHEAD OF THIS WAVE ON FRIDAY NIGHT WITH PW
VALUES IN EXCESS OF AN INCH AND A HALF BY SATURDAY. THE
APPROACHING WAVE SHOULD BE STRONG ENOUGH TO KICK OFF AT LEAST
SCATTERED SHOWERS AND THUNDERSTORMS ON SATURDAY AND HAVE RAISED
POPS IN THE FORECAST TO 50 PERCENT. WILL HOLD OFF ON RAISING THEM
ANY FURTHER GIVEN HOW FAR OUT IN TIME WE ARE AND WE WILL CONTINUE
TO MONITOR THE STRENGTH OF THE APPROACHING SHORTWAVE. AT THIS TIME
THE STRONGER INSTABILITY LOOKS TO BE FOCUSED TO OUR SOUTH AND SOME
OF THE MOISTURE TRANSPORT MAY STRUGGLE TO MAKE IT HEAR IF THIS
WAVE ENDS UP BEING DEEPER THAN MODELS ARE CURRENTLY ANTICIPATING.
&&
.MARINE...
LOW PRESSURE OVER ONTARIO WILL CONTINUE TO TRACK EASTWARD ACROSS
CANADA OVERNIGHT AND INTO WEDNESDAY. THIS LOW WILL DRAG A COLD FRONT
ACROSS THE REGION THROUGH MID EVENING. THE PASSAGE OF THIS COLD
FRONT WILL BRING COOLER TEMPERATURES TO THE GREAT LAKES ON
WEDNESDAY. THIS COOLER AIRMASS WILL BRING THE CHANCE OF WATERSPOUTS
THROUGH THE DAY ON WEDNESDAY. WINDS ARE ALSO EXPECTED TO INCREASE
WEDNESDAY ALLOWING FOR A SMALL CRAFT ADVISORY TO BE ISSUED FROM 14Z
WEDNESDAY TO 08Z THURSDAY. WAVE HEIGHTS COULD REACH UP TO 6 FEET
ALONG THE NEARSHORE PORTIONS OF THE NORTHERN THUMB. WINDS WILL
DIMINISH ON THURSDAY AS HIGH PRESSURE SETTLES OVER THE GREAT LAKES
REGION.
&&
.AVIATION...ISSUED 119 PM EDT TUE AUG 9 2011
//DISCUSSION...
A LINE OF SHOWERS AND THUNDERSTORMS ASSOCIATED WITH A COLD FRONT IS
CURRENTLY MOVING ACROSS CENTRAL LOWER MICHIGAN. ANTICIPATING THIS
LINE TO REACH THE NORTHERN TAF SITES BY LATE AFTERNOON WHICH WILL
BRING SHOWERS AND POSSIBLY A THUNDERSTORM TO MBS AND FNT. CURRENTLY
NOT EXPECTING ANY OF THE THUNDERSTORMS TO BECOME SEVERE. WINDS WILL
REMAIN FROM THE WEST-NORTHWEST THROUGH THE MAJORITY OF THE TAF
PERIOD. SKY COVER WILL DIMINISH BEHIND THE FRONT...HOWEVER CLOUDS
WILL BUILD IN AGAIN TOWARDS 12Z WEDNESDAY BEFORE SLOWLY LIFTING BY
EARLY AFTERNOON.
FOR DTW... WHILE THE LINE OF THUNDERSTORMS IS CONTINUING TO DEVELOP
SOUTHWARD...THERE IS STILL MUCH UNCERTAINTY IF THE SHOWERS WILL
ACTUALLY MAKE IT TO DTW. DUE TO THIS UNCERTAINTY...RAIN IS
CURRENTLY LEFT OUT OF THE DTW TAF...BUT WILL CONTINUE TO MONITOR AND
UPDATE AS NECESSARY THROUGHOUT THE AFTERNOON.
//DTW THRESHOLD THREATS...
* LOW CONFIDENCE IN THUNDERSTORMS OCCURRING BETWEEN 18Z AND 00Z.
* HIGH CONFIDENCE THAT THE CEILING WILL REMAIN AT OR BELOW 5000FT
FOR THE MAJORITY OF THE TAF PERIOD.
&&
.DTX WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
LAKE HURON...
SMALL CRAFT ADVISORY...OUTER SAGINAW BAY AND THE NEARSHORE WATERS
FROM PORT AUSTIN TO PORT SANILAC...FROM 10 AM WEDNESDAY TO 4
AM THURSDAY.
LAKE ST CLAIR...NONE.
MI WATERS OF LAKE ERIE...NONE.
&&
SHORT TERM...RK
LONG TERM....KEC
MARINE.......RK
AVIATION.....RK
YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE
AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).Hazardous weather outlook, Aug 9, 4:35 AM EDT, 12 hours 9 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 435 AM EDT TUE AUG 9 2011 MIZ047>049-053>055-060>063-068>070-075-076-082-083-100845- MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER- ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE- 435 AM EDT TUE AUG 9 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST MICHIGAN. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WILL BE SCATTERED AROUND SOUTHEAST MICHIGAN TODAY AND THIS EVENING...BUT SEVERE WEATHER IS NOT EXPECTED. HEAVY RAINFALL WILL BE THE MAIN CONCERN...ESPECIALLY DURING THE MORNING HOURS. THE STRONGEST STORMS DURING THE AFTERNOON AND EVENING WILL BE CAPABLE OF PEA SIZE HAIL AND WIND GUSTS NEAR 40 MPH. STORM MOTION WILL BE WEST TO EAST AT 25 MPH. A COMPACT AND STRONG WAVE OF LOW PRESSURE WILL SLIDE EASTWARD DURING THE MORNING FOLLOWED BY A SERIES OF COLD FRONTS. THE BEST CHANCE OF THUNDERSTORMS WILL BE ALONG THE INITIAL COLD FRONT AS IT MOVES THROUGH DURING THE LATE AFTERNOON AND EXITING THE AREA BY MIDNIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE NEXT CHANCE OF THUNDERSTORMS WILL ARRIVE WITH A LOW PRESSURE SYSTEM FRIDAY NIGHT THROUGH SATURDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT PLANNED TODAY AND TONIGHT. LCZ422-LHZ361>363-421-422-441>443-462>464-100845- ST. CLAIR RIVER- LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT BEYOND 5 NM OFF SHORE- LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND 5NM OFF SHORE- LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF SHORE- OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER SAGINAW BAY-INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI- PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI- PORT SANILAC TO PORT HURON MI- LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE- LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE- LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE- 435 AM EDT TUE AUG 9 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR LAKE HURON AND SAGINAW BAY. .DAY ONE...TODAY AND TONIGHT SHOWERS WILL BE NUMEROUS BUT THUNDERSTORMS WILL JUST BE SCATTERED IN COVERAGE OVER LAKE HURON AND SAGINAW BAY. SEVERE WEATHER IS NOT EXPECTED. HEAVY RAINFALL AND LIMITED VISIBILITY WILL BE THE MAIN CONCERN...ESPECIALLY DURING THE MORNING HOURS. THE STRONGEST STORMS DURING THE AFTERNOON AND EVENING WILL BE CAPABLE OF PEA SIZE HAIL AND WIND GUSTS NEAR 35 KNOTS. STORM MOTION WILL BE WEST TO EAST AT 25 KNOTS. A COMPACT AND STRONG WAVE OF LOW PRESSURE WILL SLIDE EASTWARD DURING THE MORNING FOLLOWED BY A SERIES OF COLD FRONTS. THE BEST CHANCE OF THUNDERSTORMS WILL BE ALONG THE INITIAL COLD FRONT AS IT MOVES THROUGH DURING THE AFTERNOON AND EXITING THE AREA BY MIDNIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SMALL CRAFT ADVISORIES WILL LIKELY BE NEEDED WEDNESDAY AS GUSTY NORTHWEST WIND AND COOLER AIR INTERACT WITH THE WARM LAKE WATER TO BUILD WAVES ABOVE 4 FEET. THE NEXT CHANCE OF THUNDERSTORMS WILL ARRIVE WITH A LOW PRESSURE SYSTEM FRIDAY NIGHT THROUGH SATURDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT PLANNED TODAY AND TONIGHT. LCZ423-460-LEZ444-100845- DETROIT RIVER-LAKE ST. CLAIR- MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI- 435 AM EDT TUE AUG 9 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE AND LAKE ST CLAIR. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WILL BE SCATTERED AROUND SOUTHEAST MICHIGAN AND ADJOINING MARINE AREAS TODAY AND THIS EVENING...BUT SEVERE WEATHER IS NOT EXPECTED. HEAVY RAINFALL WILL BE THE MAIN CONCERN...ESPECIALLY DURING THE MORNING HOURS. THE STRONGEST STORMS DURING THE AFTERNOON AND EVENING WILL BE CAPABLE OF PEA SIZE HAIL AND WIND GUSTS NEAR 35 KNOTS. STORM MOTION WILL BE WEST TO EAST AT 25 KNOTS. A COMPACT AND STRONG WAVE OF LOW PRESSURE WILL SLIDE EASTWARD DURING THE MORNING FOLLOWED BY A SERIES OF COLD FRONTS. THE BEST CHANCE OF THUNDERSTORMS WILL BE ALONG THE INITIAL COLD FRONT AS IT MOVES THROUGH DURING THE LATE AFTERNOON AND EXITING THE AREA BY MIDNIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE NEXT CHANCE OF THUNDERSTORMS WILL ARRIVE WITH A LOW PRESSURE SYSTEM FRIDAY NIGHT THROUGH SATURDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT PLANNED TODAY AND TONIGHT. BT YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).
In the hours before
Special weather statement, Aug 9, 3:25 PM EDT, 1 hour 19 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 325 PM EDT TUE AUG 9 2011 MIZ054-092030- TUSCOLA- 325 PM EDT TUE AUG 9 2011 ...SPECIAL WEATHER STATEMENT... AT 324 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR VASSAR...MOVING EAST AT 30 MPH. FUNNEL CLOUDS...PEA SIZE HAIL...WINDS GREATER THAN 30 MPH...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... VASSAR BY 330 PM EDT... MILLINGTON BY 335 PM EDT... MAYVILLE BY 350 PM EDT... KINGSTON BY 410 PM EDT... GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. MM/CB
Special weather statement, Aug 9, 3:38 PM EDT, 1 hour 6 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 338 PM EDT TUE AUG 9 2011 MIZ082-092015- LENAWEE- 338 PM EDT TUE AUG 9 2011 ...SPECIAL WEATHER STATEMENT... AT 336 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM NEAR HUDSON...MOVING EAST AT 40 MPH. ONE HALF INCH DIAMETER HAIL...WINDS GREATER THAN 30 MPH...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... CLAYTON BY 345 PM EDT... ONSTED BY 355 PM EDT... ADRIAN BY 405 PM EDT... TECUMSEH BY 410 PM EDT... BRITTON BY 415 PM EDT... GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. CB
Special weather statement, Aug 9, 3:42 PM EDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 342 PM EDT TUE AUG 9 2011 MIZ069-092030- OAKLAND- 342 PM EDT TUE AUG 9 2011 ...SIGNIFICANT WEATHER ADVISORY... AT 341 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 4 MILES NORTH OF MILFORD...MOVING EAST AT 40 MPH. PEA SIZE HAIL...WINDS GREATER THAN 40 MPH...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... CLARKSTON BY 350 PM EDT... WEST BLOOMFIELD BY 355 PM EDT... PONTIAC BY 400 PM EDT... BIRMINGHAM BY 405 PM EDT... TROY AND ROCHESTER BY 410 PM EDT... GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. MM/CB
Special weather statement, Aug 9, 4:01 PM EDT, 43 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 401 PM EDT TUE AUG 9 2011 MIZ069-092045- OAKLAND- 401 PM EDT TUE AUG 9 2011 ...SIGNIFICANT WEATHER ADVISORY... AT 357 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES SOUTHEAST OF MILFORD...MOVING EAST AT 45 MPH. ONE HALF INCH DIAMETER HAIL...WINDS UP TO 50 MPH...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... SOUTHFIELD BY 415 PM EDT... BIRMINGHAM BY 420 PM EDT... ROYAL OAK AND TROY BY 425 PM EDT... GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE OBJECTS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. MM/CB
Local storm report, Aug 9, 4:18 PM EDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
418 PM EDT TUE AUG 09 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0355 PM TSTM WND GST COMMERCE 42.59N 83.49W
08/09/2011 E50.00 MPH OAKLAND MI TRAINED SPOTTER
REPORTED SMALL TREE BRANCHES DOWN UP TO 1.5 INCHES IN
DIAMETER.
0355 PM TSTM WND DMG WEST BLOOMFIELD 42.57N 83.38W
08/09/2011 OAKLAND MI TRAINED SPOTTER
REPORTED SMALL TREE BRANCHES DOWN UP TO 3 INCHES IN
DIAMETER.
&&
DKOOKSpecial weather statement, Aug 9, 4:21 PM EDT, 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 421 PM EDT TUE AUG 9 2011 MIZ075-092115- WASHTENAW- 421 PM EDT TUE AUG 9 2011 ...SIGNIFICANT WEATHER ADVISORY... AT 418 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 4 MILES NORTHWEST OF MANCHESTER...MOVING EAST AT 25 MPH. PEA SIZE HAIL...WINDS GREATER THAN 40 MPH...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... SALINE BY 455 PM EDT... ANN ARBOR BY 500 PM EDT... YPSILANTI BY 510 PM EDT... WILLIS BY 515 PM EDT... GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. MM/CB
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 3:19 PM EDT | Special Marine Warning | DTX | 57 min | |
| Aug 9, 4:12 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland, Wayne | 52 min |
| Aug 9, 4:30 PM EDT | Small Craft Advisory | DTX | 36 hr | |
| Aug 9, 4:47 PM EDT | Special Marine Warning | DTX | 50 min | |
| Aug 9, 4:56 PM EDT | Special Marine Warning | DTX | 31 min | |
| Aug 9, 5:42 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe, Washtenaw, Wayne | 31 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2011Every severe thunderstorm warning in 2011
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.