A thunderstorm moving into the nearshore waters of Lake Huron around Lexington produced an estimated wind gust to 40 mph.
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The episode as NWS DTX wrote it up.
A thunderstorm moving into the nearshore waters of Lake Huron around Lexington produced an estimated wind gust to 40 mph.
The local office's own words before the first event, 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 the first event at May 6, 2:42 PM EST, 2 hours 8 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 342 PM EDT FRI MAY 6 2011 .SHORT TERM...TONIGHT UPPER LEVEL CIRCULATION CURRENTLY SWINGING THROUGH FAR NORTHERN LOWER MICHIGAN...WITH CENTER OF 500 MB COLD POOL (26 C) TRACKING THROUGH SAGINAW BAY/SOUTHERN LAKE HURON EARLY THIS EVENING. HIGH SCATTERED/LOW NUMEROUS COVERAGE CONVECTIVE SHOWERS ARE CURRENTLY WORKING THROUGH SOUTHEAST MICHIGAN THIS AFTERNOON ALONG WITH ISOLATED THUNDERSTORMS. ENOUGH WIND IN THE COLUMN COUPLED WITH INVERTED V SOUNDING TO PRODUCE STRONG WIND GUSTS OF 40 TO 50 MPH (SEE 1902Z ARB WIND GUST OF 50 MPH). LIGHTNING STRIKES HAVE BEEN HARD TO COME BY AS ACTIVITY REMAINS UNORGANIZED. THE GOOD NEWS IS SUB 40 DEGREE DEW PTS ARE BECOMING BETTER ESTABLISHED AND COVERAGE SHOULD CONTINUE TO DIMINISH OVER THE NEXT COUPLE OF HOURS. LOCAL HIRES RUN...WHICH DID A GOOD JOB CAPTURING THE ACTIVITY THIS AFTERNOON...IS INDICATING A FEW SHOWERS LINGERING AFTER 00Z ACROSS THE NORTH HALF OF THE CWA...CLOSER TO THE COLD POOL/CIRCULATION/WEAK SURFACE LOW...AND WILL CARRY AN ISOLATED SHOWER MENTION. OTHERWISE...EXPECTING MOSTLY TO PARTLY CLOUDY SKIES TONIGHT (MID LEVEL LAPSE RATES REMAIN FAIRLY STEEP)...WITH MINS FALLING INTO THE LOWER 40S (FOR THE MAJORITY OF SOUTHEAST MICHIGAN)...IN LINE WITH LATEST MAV/MET GUIDANCE. && .LONG TERM...SATURDAY THROUGH FRIDAY UPPER TROPOSPHERIC JETLET EMERGING FROM THE NORTHERN ROCKIES REGION WILL QUICKLY PROGRESS INTO THE UPPER MISSISSIPPI VALLEY TONIGHT AND INDUCE A WEAK RIPPLE IN THE PROGRESSIVE FLOW. THIS SHORTWAVE WILL SLIP THROUGH THE OHIO VALLEY AND SOUTHERN LAKES REGION ON SATURDAY. THE FAST MOVING WAVE WILL PRODUCE A NARROW RIBBON OF DEFORMATION IN THE 800-600MB LAYER ACROSS THE SOUTHERN PORTIONS OF SOUTHEAST LOWER MICHIGAN...ESPECIALLY DURING THE AFTERNOON AND EVENING HOURS. EXPECTING THE DEFORMATION TO PROVIDE A CLEARLY DEFINED PRECIPITATION REGION. WILL CONTINUE TO ADVERTISE HIGHER POPS ALONG AND SOUTH OF INTERSTATE 96...WITH A RATHER RAPID DECREASE TOWARD THE NORTH. LAPSE RATES IN THE DEFORMATION ZONE CERTAINLY SUPPORT EMBEDDED CONVECTION...HOWEVER THE DEPTH APPEARS TO BE RATHER LIMITED AND DOES NOT REACH UP TO THE -20C LEVEL TO SUPPORT THUNDER. THEREFORE...WILL ADVERTISE THE SHOWERY NATURE BUT REFRAIN FROM THUNDER MENTION. IN THE WAKE OF SATURDAY/S SYSTEM...UPPER LEVEL HEIGHTS ARE EXPECTED TO BE ON THE INCREASE SUNDAY AND MONDAY. FURTHERMORE...THE PRESENCE OF SURFACE RIDGING INDICATES RATHER DEEP SUBSIDENCE ACROSS THE REGION...KEEPING CONDITIONS DRY AND SEASONABLE. NEXT WEEK THE LONGWAVE PATTERN WILL SLOWLY AMPLIFY AS THE WAVELENGTH COMPRESSES. THE LAKES REGION WILL BENEFIT FROM RESIDING WITHIN THE ANTI-CYCLONIC FLOW ALOFT DURING THE BALANCE OF THE WEEK...SETTING THE STAGE FOR A GRADUAL WARMING TREND. THE PROSPECTS FOR A PERIOD OR TWO OF RAINFALL REMAINS AS THE CENTRAL PLAINS AND MID-MISSISSIPPI VALLEY WILL BE CONVECTIVELY ACTIVE AND A RESIDUAL BATCH OF SHOWERS TOPPING THE RIDGE IS NOT OUT OF THE QUESTION - WITH TUESDAY LOOKING TO BE THE MOST LIKELY TIME WINDOW. THE UPPER RIDGE IS EXPECTED TO WEAKEN DRAMATICALLY THE END OF THE WEEK AS THE WAVELENGTH SHORTENS PASSED A CRITICAL VALUE. THIS WILL SET THE STAGE FOR AN UNSETTLED PERIOD FROM THURSDAY AND BEYOND. && .MARINE... LIGHT WINDS WILL PERSIST OVER MARINE AREAS RIGHT THROUGH THE WEEKEND AS SURFACE RIDGE EXTENDING FROM A HIGH OVER NORTHERN CANADA NOSES IT WAY INTO THE GREAT LAKES REGION. THE RIDGE AXIS WILL SLIDE TO THE EASTERN GREAT LAKES EARLY NEXT WEEK...AS LOW PRESSURE LIFTS INTO THE WESTERN GREAT LAKES. THE PRESSURE GRADIENT BETWEEN THESE TWO SYSTEMS STILL IS NOT TERRIBLY TIGHT...AND WINDS ARE EXPECTED TO REMAIN BELOW 20 KNOTS FOR THE MOST PART. && .AVIATION...ISSUED 106 PM EDT FRI MAY 6 2011 VFR CONDITIONS EXPECTED THROUGH THE TAF PERIOD...ALTHOUGH WILL BE DODGING A COUPLE SHOWERS AROUND SOUTHEAST MICHIGAN THIS AFTERNOON...ALONG WITH ISOLATED THUNDERSTORMS WHICH WOULD BRIEFLY REDUCE VSBYS. GUSTY WESTERLY WINDS OF 20 TO 25 KNOTS AROUND THIS AFTERNOON...AS DEEP MIXING AND SURFACE TROUGH MOVES THROUGH. WINDS WILL QUICKLY DECREASE TOWARD SUNSET. EXPECTING VARIABLE MID CLOUDS (7-10FT) AROUND TONIGHT AS COLD POOL TRACKS THROUGH THE CENTRAL GREAT LAKES. NEXT LOW PRESSURE SYSTEM MOVING INTO THE WESTERN OHIO VALLEY LATE TOMORROW WILL LIKELY SPREAD SOME RAIN INTO THE DETROIT TAFS BY DAYS END...BUT WINDS WILL REMAIN ON THE LIGHT SIDE. && .DTX WATCHES/WARNINGS/ADVISORIES... MI...NONE. LAKE HURON...NONE. LAKE ST CLAIR...NONE. MI WATERS OF LAKE ERIE...NONE. && SHORT TERM...SF LONG TERM....MANN MARINE.......SF AVIATION.....SF YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 404 AM EDT FRI MAY 6 2011 MIZ047>049-053>055-060>063-068>070-075-076-082-083-070815- MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER- ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE- 404 AM EDT FRI MAY 6 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MICHIGAN. .DAY ONE...TODAY AND TONIGHT ISOLATED THUNDERSTORMS ARE POSSIBLE TODAY AS A WEAK FRONTAL SYSTEM PASSES THROUGH THE STATE. SMALL HAIL WILL BE POSSIBLE WITH THE THUNDERSTORMS TODAY. THE THUNDERSTORMS ARE EXPECTED TO TRACK TO THE EAST AT 40 MPH. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY A CHANCE OF THUNDERSTORMS WILL RETURN FROM MONDAY NIGHT THROUGH WEDNESDAY AS A MORE WARM AND HUMID AIRMASS MOVES OVER THE REGION. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. LCZ422-423-460-LEZ444-LHZ361>363-421-422-441>443-462>464-070815- ST. CLAIR RIVER-DETROIT RIVER-LAKE ST. CLAIR- MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI- 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- 404 AM EDT FRI MAY 6 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE...LAKE HURON AND LAKE ST CLAIR. .DAY ONE...TODAY AND TONIGHT ISOLATED THUNDERSTORMS ARE POSSIBLE TODAY AS A WEAK FRONTAL SYSTEM PASSES THROUGH THE STATE. SMALL HAIL WILL BE POSSIBLE WITH THE THUNDERSTORMS TODAY. THE THUNDERSTORMS ARE EXPECTED TO TRACK TO THE EAST AT 40 MPH. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY A CHANCE OF THUNDERSTORMS WILL RETURN FROM MONDAY NIGHT THROUGH WEDNESDAY AS A MORE WARM AND HUMID AIRMASS MOVES OVER THE REGION. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. CB YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 231 PM EDT FRI MAY 6 2011 MIZ047>049-053>055-060>063-068>070-075-076-082-083-061930- BAY-GENESEE-HURON-LAPEER-LENAWEE-LIVINGSTON-MACOMB-MIDLAND-MONROE- OAKLAND-SAGINAW-SANILAC-SHIAWASSEE-ST. CLAIR-TUSCOLA-WASHTENAW-WAYNE- 231 PM EDT FRI MAY 6 2011 ...SPECIAL WEATHER STATEMENT... NUMEROUS SHOWERS WITH EMBEDDED ISOLATED THUNDERSTORMS WILL MOVE THROUGH SOUTHEAST MICHIGAN LATE THIS AFTERNOON. THE STRONGEST CELLS WILL PRODUCE WIND GUSTS TO 40 MPH ALONG WITH PEA SIZE HAIL. IN ADDITION...SHOWERS WILL BRIEFLY COOL TEMPERATURES ABOUT 10 DEGREES. SF
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 325 PM EDT FRI MAY 6 2011 MIZ053-061945- SAGINAW- 325 PM EDT FRI MAY 6 2011 ...SIGNIFICANT WEATHER ADVISORY... AT 324 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 9 MILES NORTHWEST OF BIRCH RUN...MOVING EAST AT 15 MPH. ONE HALF INCH DIAMETER HAIL...WINDS UP TO 50 MPH...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... BRIDGEPORT BY 335 PM EDT... FRANKENMUTH BY 345 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. SF
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
328 PM EDT FRI MAY 06 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0302 PM TSTM WND GST 4 SSW ANN ARBOR 42.22N 83.75W
05/06/2011 M50 MPH WASHTENAW MI ASOS
&&
ADODSONSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 457 PM EDT FRI MAY 6 2011 MIZ063-062145- ST. CLAIR MI- 457 PM EDT FRI MAY 6 2011 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL ST. CLAIR COUNTY UNTIL 545 PM EDT... AT 452 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM EMMETT TO 5 MILES NORTHWEST OF MARINE CITY...AND MOVING EAST AT 25 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN. THESE STORMS WILL BE NEAR... RATTLE RUN AROUND 505 PM EDT. GOODELLS...ST. CLAIR AND SMITHS CREEK AROUND 510 PM EDT. WADHAMS AND MARYSVILLE AROUND 525 PM EDT. PORT HURON AND FORT GRATIOT AROUND 540 PM EDT. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. KURIMSKI
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 506 PM EDT FRI MAY 6 2011 MIZ049-055-062-063-062145- HURON MI-LAPEER MI-SANILAC MI-ST. CLAIR MI- 506 PM EDT FRI MAY 6 2011 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN ST. CLAIR...SANILAC... SOUTHEASTERN HURON AND LAPEER COUNTIES UNTIL 545 PM EDT... AT 504 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM UBLY TO 7 MILES NORTHWEST OF PECK TO LUM...AND MOVING EAST AT 25 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS. THESE STORMS WILL BE NEAR... PALMS...PARISVILLE...MINDEN AND GOODLAND TOWNSHIP AROUND 515 PM EDT. VALLEY CENTER...RUTH...MCGREGOR...IMLAY CITY AND DECKERVILLE AROUND 520 PM EDT. HELENA AND PECK AROUND 525 PM EDT. MELVIN...LYNN TOWNSHIP AND CARSONVILLE AROUND 530 PM EDT. KURIMSKI
The Detroit radar (KDTX), 99 km away, was scanning. The volume nearest the first event began at 21:51 UTC.
1 marine thunderstorm wind. Local standard time, as filed.
A trained spotter estimated a 40 mph thunderstorm wind gust.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Lake Huron in 2011Every state in 2011This day in weather history
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 306715.