A strong low pressure system tracked through Northern Lower Michigan, dragging a cold front through southeast Michigan. Wind gusts to 60 mph occurred south of M-59, which lead to downed tree branches along with a few trees and power lines.
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS DTX wrote it up.
A strong low pressure system tracked through Northern Lower Michigan, dragging a cold front through southeast Michigan. Wind gusts to 60 mph occurred south of M-59, which lead to downed tree branches along with a few trees and power lines. About 40,000 customers lost power, most concentrated in Wayne County.
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 Dec 9, 6:18 AM EST, 5 hours 42 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
618 AM EST WED DEC 9 2009
.AVIATION...
SNOW HAS CHANGED OVER TO ALL RAIN ACROSS THE AREA SAVE FOR KMBS
WHICH SHOULD SWITCH OVER BY 14Z. THE CHANGEOVER TO RAIN WILL RAISE
VSBYS TO VFR...HOWEVER CIGS WILL ONLY IMPROVE FROM LIFR TO IFR/MVFR
AS THE DAY PROGRESSES.
THE MAIN ISSUE TODAY WILL BE THE WIND. THE DRY SLOT WILL REDUCE THE
PRECIPITATION TO SPOTTY LIGHT RAIN SHOWERS OR DRIZZLE DURING THE
DAYLIGHT HOURS. IMPROVEMENT IN CEILING AND VISIBILITY WILL COME AT
THE EXPENSE OF SOUTHWEST WINDS GUSTING TO 40 KNOTS WITH A FEW GUSTS
NEAR 50 KNOTS AT THE PTK AND METRO AIRPORTS THIS AFTERNOON AS COLD
AIR SPILLS BACK INTO THE REGION. THE GUSTY CONDITIONS WILL THEN LAST
WELL INTO THE EVENING WHILE TURNING TOWARD THE WEST. THIS WIND
DIRECTION AND THE COLD AIR WILL DIRECT SNOW SHOWERS INTO THE AREA
FROM LAKE MICHIGAN...MAINLY TOWARD PONTIAC AND FLINT.
&&
.PREV DISCUSSION...ISSUED 421 AM EST WED DEC 9 2009
SHORT TERM...TODAY
A DEEPENING LOW PRESSURE SYSTEM ACROSS CENTRAL ILLINOIS WILL QUICKLY
MOVE NORTHEAST TO NORTHERN LAKE HURON BY THIS AFTERNOON. A
SIGNIFICANT DRY SLOT SHOWS ON WATER VAPOR IS MAKING ITS WAY INTO
SOUTHEAST MICHIGAN...WHICH IS HIGHLIGHTED BY THE BACK EDGE OF THE
HIGHEST REFLECTIVITIES MOVING INTO SOUTHERN MICHIGAN. THE DRY SLOT
WILL PROVIDE A PERIOD OF LOWER PRECIP CHANCES AS MUCH OF THE
MOISTURE IS STRIPPED OUT OF THE MIDDLE LAYERS. THE STRIPPED OUT
MOISTURE AND WARMER TEMPERATURES WILL CONTINUE TO CHANGEOVER FROM
SNOW TO RAIN EARLY THIS MORNING WITH THE SOUTHERN HALF OF THE CWA
ALREADY AT ALL RAIN AT ISSUANCE. WITH THE DRIER AIR...WARMER
TEMPERATURES AND THE SLOW CHANGEOVER TO RAIN THE HEADLINES WILL
EXPIRE AT THEIR DESIGNATED TIMES FROM SOUTH TO NORTH AS THE IMPACT
FROM HEAVY SNOW AND MIXED WINTERY PRECIPITATION DECREASES EARLY THIS
MORNING.
AS THE LOW HEADS OFF TOWARDS NORTHERN LAKE HURON THIS AFTERNOON COLD
AIR WILL ADVECT BACK INTO THE AREA CHANGING THE RAIN BACK OVER TO
SNOW FROM NORTH TO SOUTH. DESPITE THE CHANGEOVER FROM RAIN TO SNOW
THE BEST MOISTURE FROM THIS SYSTEM WILL BE OUT OF THE CENTRAL GREAT
LAKES...WITH ONLY LIGHT ACCUMULATIONS EXPECTED THIS AFTERNOON.
AS THE LOW PASSES TO THE WEST...THE HEART OF THE DRY SLOT WILL MOVE
INTO THE CWA AROUND NOON AS STRONG ISENTROPIC DESCENT AND A VERY
TIGHT PRESSURE GRADIENT BRING EXTREMELY WINDY CONDITIONS TO THE AREA
TODAY. THE STRONG DESCENT WILL BRING STRONG 925 MB WINDS TO THE
SURFACE AS SOUTHWEST WINDS OF 45 TO 55 KNOTS AT THIS LEVEL ALONG AND
SOUTH OF M-59 WARRANTS A HIGH WIND WARNING WHERE THE PREVIOUS WATCH
WAS ISSUED. A BIT FURTHER NORTH OF M-59...925 WINDS WILL BE A BIT
LIGHTER AT 35 TO 40 KNOTS...WHICH WILL PROBABLY NOT MEET HIGH WIND
WARNING CRITERIA BUT WILL CERTAINLY BE HIGH ENOUGH FOR A WIND
ADVISORY. THEREFORE WILL ISSUE THIS HEADLINE JUST NORTH OF THE HIGH
WIND WARNING. THE ONE EXCEPTION WILL BE THE SAGINAW VALLEY WHICH
WILL BE CLOSE ENOUGH TO THE TRACK OF THE LOW FOR A LIGHTER PRESSURE
GRADIENT AND FAR ENOUGH NORTHWEST TO NOT BENEFIT AS MUCH FROM THE
ISENTROPIC DESCENT AND DRY SLOT FURTHER SOUTH. WITH THE LESS
FAVORABLE CONDITIONS WILL OPT TO LEAVE THE 3 COUNTIES ENCOMPASSING
THE SAGINAW VALLEY OUT OF THE WIND HEADLINES.
LONG TERM...TONIGHT THROUGH TUESDAY
BIG STORY: COLD AIR AND GUSTY WINDS WILL PRODUCE A PROLONGED PERIOD
WITH WIND CHILLS IN THE SINGLE DIGITS TO SLIGHTLY BELOW ZERO TONIGHT
THROUGH SATURDAY MORNING. LAKE EFFECT SNOW SHOWERS WILL ALSO BE
POSSIBLE THROUGH FRIDAY...WITH ACCUMULATIONS OF A FEW INCHES
POSSIBLE.
STORY OVERNIGHT WILL BE A CONTINUATION OF COLD AIR ADVECTION AND
WINDY CONDITIONS BEHIND THE FRONT. WIND HEADLINES WILL CONTINUE
UNTIL 4 AM AS TIGHT SURFACE PRESSURE GRADIENT...ISENTROPIC
DESCENT...AND GOOD THERMAL SUPPORT CONTINUE TO MIX HIGHER GUSTS DOWN
TO THE SURFACE. IT DOES LOOK LIKE THERE WILL BE A LULL IN ACTIVITY
DURING THE EARLY MORNING AS THE LOW LIFTS AWAY...BEFORE WINDS BEGIN
TO INCREASE AGAIN BY LATE MORNING AND AFTERNOON. ALTHOUGH THE AREA
OF STRONG SURFACE LOW PRESSURE WILL HAVE LIFTED NORTHEAST INTO
QUEBEC...A STRONG DOME OF HIGH PRESSURE BUILDING TO OUR SOUTHWEST
WILL ACTUALLY REINTENSIFY THE PRESSURE GRADIENT BEHIND THE DEPARTING
SYSTEM. IT IS POSSIBLE WE MAY NEED ANTIHERO SET OF WIND HEADLINES
FOR TOMORROW AFTERNOON...ESPECIALLY GIVEN CONTINUED THERMAL SUPPORT
FROM COLD AIR ADVECTION. MODELS HOLD THE TIGHT PRESSURE GRADIENT
OVER THE CENTRAL GREAT LAKES THROUGH THURSDAY NIGHT AND INTO THE
FIRST HALF OF FRIDAY...AS BOTH THE LOW TO OUR NORTHEAST AND THE HIGH
TO OUR SOUTHWEST SHIFT EAST TOGETHER. CHILLY TEMPERATURES WILL
SETTLE INTO THE REGION TONIGHT WITH LITTLE RECOVERY EXPECTED FOR
DAYTIME HIGHS ON THURSDAY. BOTH LOWS TONIGHT AND HIGHS ON THURSDAY
WILL BE FROM THE MID TEENS TO LOW 20S. COLD TEMPERATURES WILL
CONTINUE THROUGH FRIDAY...WITH CHILLY MORNING LOWS RANGING FROM 8-14
AND HIGHS ONLY IN THE LOW 20S.
STRONG WESTERLY FLOW ACROSS LAKE MICHIGAN WITH LAKE TO H850 DELTA T
VALUES STARTING AT 17 C AND FALLING TO 27 C BY THURSDAY
AFTERNOON...ALONG WITH A FAIRLY DEEP SATURATED LAYER AND GOOD
LOW/MID LEVEL LAPSE RATES WILL ALL SUPPORT LAKE EFFECT SNOW FROM
TONIGHT THROUGH FRIDAY. ALTHOUGH THE WHOLE FORECAST AREA WILL SEE
CHANCES FOR THESE SHOWERS...MODEL WIND CONVERGENCE FIELDS SHOW
SUPPORT FOR ADDITIONAL BANDING STRETCHING MAINLY FROM I-69 DOWN TO
THE OHIO BORDER DURING THIS PERIOD. ACCUMULATIONS OF A FEW INCHES
OVERALL ARE POSSIBLE SOUTH OF I-69.
HIGH PRESSURE WILL BUILD OVER THE REGION FRIDAY NIGHT AND
SATURDAY...WITH LIGHTER WINDS AND A MORE SOUTHERLY COMPONENT HELPING
LAKE EFFECT SNOW SHOWERS END ACROSS SOUTHEAST MICHIGAN. DRIER
AIRMASS AND DEEP LAYER SUBSIDENCE MAY ALLOW THE SUN TO PEAK OUT AS
WELL. TEMPERATURES WILL REMAIN COLD AND BELOW NORMAL...BUT SHOULD
MODERATE SEVERAL DEGREES FROM FRIDAY UNDER VERY WEAK WARM AIR
ADVECTION.
MODELS THEN SHOW A STRONG UPPER WAVE AND JET STREAK RIDING THROUGH
WESTERN CANADA...AS WEAKER SHORTWAVE ENERGY DROPS DOWN THE
CALIFORNIA COAST. AS THE RESULTANT ELONGATED TROUGH FORMED BY THESE
TWO SYSTEMS BEGINS TO PUSH EASTWARD...MODELS SPIN UP AND LIFT A
FAIRLY STRONG LOW PRESSURE SYSTEM NORTHEAST OUT AHEAD OF IT. 00Z
EURO LIFTS THIS SYSTEM UP INTO MICHIGAN ON MONDAY...WHILE THE 00Z
GFS LIFTS IT MORE INTO WISCONSIN AND MINNESOTA ON SUNDAY NIGHT.
TRACK OF THE SURFACE LOW IS STILL TOO EARLY TO DETERMINE ESPECIALLY
GIVEN THE VARIABILITY MODELS HAVE SHOWN OVER THE PAST FEW DAYS WITH
THESE TWO WAVES...BUT THIS SYSTEM COULD BE THE NEXT ONE TO WATCH.
CURRENT TRACKS TO THE NORTH AND WEST WOULD ALLOW WARMER AIR TO SURGE
UP INTO THE REGION ALONG WITH THE MOISTURE (00Z EURO/GFS SHOWS 925
TEMPS RISING ABOVE FREEZING)...BUT GIVEN THE COLD AIRMASS THAT WILL
ALREADY BE ENTRENCHED WELL TO OUR SOUTH...THIS WOULD NOT NECESSARILY
MEAN RAIN WOULD FALL. HAVE LET THE INHERITED FORECAST RIDE SINCE
THIS SOLUTION HAS JUST COME TOGETHER AND WILL MONITOR IN FUTURE RUNS.
MARINE...
LOW PRESSURE IN NORTHERN ILLINOIS AT 985 MB WILL DEEPEN TO 975 MB
OFFSHORE OF KENOSHA WISCONSIN DURING THE MORNING AND THEN MOVE INTO
NORTHERN LAKE HURON TONIGHT. EASTERLY GUSTS TO STORM FORCE REMAIN
EXPECTED OVER THE NORTH HALF OF LAKE HURON AS THE SYSTEM
APPROACHES...AND THEN OVER THE SOUTH HALF DOWN TO WESTERN LAKE ERIE
TONIGHT AS THE SYSTEM EXITS THE REGION. IN BOTH CASES, COLD AIR
BEING DRAWN OVER THE WATER WILL LEAD TO ENOUGH INSTABILITY FOR DEEP
TURBULENT MIXING OF STRONG WINDS ALOFT DOWN TO THE LAKE SURFACE.
AN ADDITIONAL MAJOR IMPACT OF THIS STORM WILL BE WAVE HEIGHTS WITH
THE ONSHORE FLOW. WAVE HEIGHTS IN EXCESS OF 22 FEET WILL BE POSSIBLE
ACROSS THE WESTERN WATERS OF LAKE HURON NORTH OF SAGINAW BAY. THERE
WILL BE A LULL IN THE WINDS AS THE LOW CENTER TRACKS THROUGH
NORTHERN PORTIONS OF THE LAKE. THIS WILL BE FOLLOWED BY A STRONG
POLAR COLD FRONT THAT WILL SLICE THROUGH SOUTHERN LAKE HURON...LAKE
ST CLAIR...AND THE MICHIGAN WATERS OF LAKE ERIE THIS AFTERNOON AND
TONIGHT. A SECONDARY TIME PERIOD FOR STORM FORCE WINDS WILL OCCUR
ALONG AND BEHIND THIS FRONT FOR SOUTHERN LAKE HURON SOUTH THROUGH
WESTERN LAKE ERIE. A PROLONGED PERIOD OF GALE FORCE WINDS ARE THEN
EXPECTED TO PERSIST THROUGH THURSDAY NIGHT AND FRIDAY.
&&
.DTX WATCHES/WARNINGS/ADVISORIES...
MI...WINTER STORM WARNING...MIZ047-MIZ048...UNTIL 10 AM WEDNESDAY.
HIGH WIND WARNING...MIZ063-MIZ068-MIZ069-MIZ070-MIZ075-MIZ076-
MIZ082-MIZ083...FROM NOON WEDNESDAY TO 4 AM THURSDAY.
WINTER WEATHER ADVISORY...MIZ055-MIZ060-MIZ061-MIZ062...UNTIL 7 AM
WEDNESDAY.
WIND ADVISORY...MIZ049-MIZ054-MIZ055-MIZ060-MIZ061-MIZ062...FROM
NOON WEDNESDAY TO 4 AM THURSDAY.
WINTER WEATHER ADVISORY...MIZ049-MIZ053-MIZ054...UNTIL 10 AM
WEDNESDAY.
LAKE HURON...
GALE WARNING...LHZ361-LHZ362...FROM 7 PM WEDNESDAY TO 4 PM FRIDAY.
STORM WARNING...LHZ361-LHZ362...UNTIL 7 PM WEDNESDAY.
GALE WARNING...LHZ363-LHZ462-LHZ463-LHZ464...FROM 4 AM THURSDAY TO
4 PM FRIDAY.
STORM WARNING...LHZ363-LHZ421-LHZ441-LHZ442-LHZ443-LHZ462-LHZ463-
LHZ464...UNTIL 4 AM THURSDAY.
GALE WARNING...NEARSHORE WATERS FROM PORT AUSTIN TO PORT HURON
INCLUDING OUTER SAGINAW BAY...FROM 4 AM THURSDAY TO 4 AM
FRIDAY.
GALE WARNING...INNER SAGINAW BAY...UNTIL 4 AM FRIDAY.
LAKE ST CLAIR...
GALE WARNING...FROM 4 AM THURSDAY TO 4 AM FRIDAY.
STORM WARNING...UNTIL 4 AM THURSDAY.
MI WATERS OF LAKE ERIE...
GALE WARNING...FROM 4 AM THURSDAY TO 4 AM FRIDAY.
LOW WATER ADVISORY...FROM NOON WEDNESDAY TO 7 PM THURSDAY.
STORM WARNING...UNTIL 4 AM THURSDAY.
&&
AVIATION.....KURIMSKI
SHORT TERM...KURIMSKI
LONG TERM....HLO
MARINE.......KURIMSKI
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 505 AM EST WED DEC 9 2009 MIZ063-068>070-075-076-082-083-101015- ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE- 505 AM EST WED DEC 9 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MICHIGAN. .DAY ONE...TODAY AND TONIGHT A HIGH WIND WARNING IS IN EFFECT THIS AFTERNOON AND TONIGHT. PLEASE SEE THE LATEST WEATHER MESSAGE /NPWDTX/ FOR DETAILS. SNOWFALL ACCUMULATIONS OF 1 TO 2 INCHES ARE POSSIBLE TONIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY STRONG WEST WINDS WILL CONTINUE ON THURSDAY...WITH GUSTS TO 45 MPH POSSIBLE. SNOWFALL ACCUMULATIONS OF 1 TO 3 ARE POSSIBLE THURSDAY AND THURSDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED...HOWEVER SPOTTER REPORTS OF SNOW ACCUMULATION GREATER THAN ONE INCH AND PEAK WIND REPORTS WOULD BE GREATLY APPRECIATED. MIZ049-054-055-060>062-101015- HURON-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER- 505 AM EST WED DEC 9 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MICHIGAN. .DAY ONE...TODAY AND TONIGHT A WIND ADVISORY IS IN EFFECT THIS AFTERNOON AND TONIGHT. PLEASE SEE THE LATEST WEATHER MESSAGE /NPWDTX/ FOR DETAILS. SNOWFALL ACCUMULATIONS OF 1 TO 2 INCHES ARE POSSIBLE TONIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY STRONG WEST WINDS WILL CONTINUE ON THURSDAY...WITH GUSTS TO 45 MPH POSSIBLE. SNOWFALL ACCUMULATIONS OF 1 TO 3 ARE POSSIBLE THURSDAY AND THURSDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED...HOWEVER SPOTTER REPORTS OF SNOW ACCUMULATION GREATER THAN ONE INCH AND PEAK WIND REPORTS WOULD BE GREATLY APPRECIATED. MIZ053-101015- SAGINAW- 505 AM EST WED DEC 9 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MICHIGAN. .DAY ONE...TODAY AND TONIGHT A WINTER WEATHER ADVISORY IS IN EFFECT THIS MORNING FOR SAGNIAW COUNTY. PLEASE SEE THE LATEST WINTER WEATHER ADVISORY /WSWDTX/ FOR DETAILS. STRONG SOUTHWEST WINDS WILL OCCUR BEHIND A POWERFUL COLD FRONT THIS AFTERNOON AND TONIGHT. WINDS GUSTS HAVE THE POTENTIAL TO REACH 40 MPH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY STRONG WEST WINDS WILL CONTINUE ON THURSDAY...WITH GUSTS TO 45 MPH POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED...HOWEVER SPOTTER REPORTS OF SNOW ACCUMULATION GREATER THAN ONE INCH AND PEAK WIND REPORTS WOULD BE GREATLY APPRECIATED. MIZ047-048-101015- MIDLAND-BAY- 505 AM EST WED DEC 9 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MICHIGAN. .DAY ONE...TODAY AND TONIGHT A WINTER STORM WARNING IS IN EFFECT THIS MORNING FOR BAY AND MIDLAND COUNTIES. PLEASE SEE THE LATEST WINTER WEATHER STATEMENT /WSWDTX/ FOR DETAILS. STRONG SOUTHWEST WINDS WILL OCCUR BEHIND A POWERFUL COLD FRONT THIS AFTERNOON AND TONIGHT. WINDS GUSTS HAVE THE POTENTIAL TO REACH 40 MPH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY STRONG WEST WINDS WILL CONTINUE ON THURSDAY...WITH GUSTS TO 45 MPH POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED...HOWEVER SPOTTER REPORTS OF SNOW ACCUMULATION GREATER THAN ONE INCH AND PEAK WIND REPORTS WOULD BE GREATLY APPRECIATED. LCZ422-LHZ361>363-421-441>443-462>464-101015- 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-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- 505 AM EST WED DEC 9 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE HURON AND LAKE ST CLAIR. .DAY ONE...TODAY AND TONIGHT STORM WARNINGS ARE IN EFFECT TODAY AND TONIGHT FOR LAKE HURON INCLUDING THE NEARSHORE WATERS AND OUTER SAGINAW BAY. GALE WARNINGS WILL GO INTO EFFECT TONIGHT FOR LAKE HURON NORTH OF STURGEON POINT. PLEASE SEE THE LATEST FORECASTS /NSHDTX/ AND /GLFLH/ OR MARINE WEATHER MESSAGE /MWWDTX/ FOR DETAILS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY GALE WARNINGS ARE IN EFFECT THURSDAY AND THURSDAY NIGHT FOR LAKE HURON INCLUDING THE NEARSHORE WATERS AND OUTER SAGINAW BAY. PLEASE SEE THE LATEST FORECASTS /NSHDTX/ AND /GLFLH/ OR MARINE WEATHER MESSAGE /MWWDTX/ FOR DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. LHZ422-101015- INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI- 505 AM EST WED DEC 9 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE HURON. .DAY ONE...TODAY AND TONIGHT GALE WARNINGS ARE IN EFFECT TODAY AND TONIGHT FOR INNER SAGINAW BAY. PLEASE SEE THE LATEST FORECASTS /NSHDTX/ AND MARINE WEATHER MESSAGE /MWWDTX/ FOR DETAILS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY GALE WARNINGS ARE IN EFFECT THURSDAY AND THURSDAY NIGHT FOR INNER SAGINAW BAY. PLEASE SEE THE LATEST FORECASTS /NSHDTX/ AND MARINE WEATHER MESSAGE /MWWDTX/ FOR DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. LCZ423-460-101015- DETROIT RIVER-LAKE ST. CLAIR- 505 AM EST WED DEC 9 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ST CLAIR. .DAY ONE...TODAY AND TONIGHT STORM WARNINGS ARE IN EFFECT TODAY AND TONIGHT FOR LAKE ST. CLAIR. PLEASE SEE THE LATEST FORECASTS /GLFSC/ AND MARINE WEATHER MESSAGE /MWWDTX/ FOR DETAILS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY GALE WARNINGS ARE IN EFFECT THURSDAY AND THURSDAY NIGHT FOR LAKE ST. CLAIR. PLEASE SEE THE LATEST FORECASTS /GLFSC/ AND MARINE WEATHER MESSAGE /MWWDTX/ FOR DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. LEZ444-101015- MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI- 505 AM EST WED DEC 9 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE. .DAY ONE...TODAY AND TONIGHT STORM WARNINGS AND LOW WATER ADVISORIES ARE IN EFFECT TODAY AND TONIGHT FOR THE MICHIGAN WATERS OF LAKE ERIE. PLEASE SEE THE LATEST FORECASTS /NSHDTX/ AND MARINE WEATHER MESSAGE /MWWDTX/ FOR DETAILS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY GALE WARNINGS AND LOW WATER ADVISORIES ARE IN EFFECT THURSDAY AND THURSDAY NIGHT FOR THE MICHIGAN WATERS OF LAKE ERIE. PLEASE SEE THE LATEST FORECASTS /NSHDTX/ AND MARINE WEATHER MESSAGE /MWWDTX/ FOR DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. KURIMSKI YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
918 AM EST WED DEC 09 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0630 AM SNOW BAD AXE 43.80N 83.00W
12/09/2009 M1.5 INCH HURON MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0645 AM SNOW ORTONVILLE 42.85N 83.44W
12/09/2009 M1.7 INCH OAKLAND MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW OWOSSO 43.00N 84.18W
12/09/2009 M2.2 INCH SHIAWASSEE MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW VASSAR 43.37N 83.58W
12/09/2009 M1.5 INCH TUSCOLA MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW BAY CITY 43.59N 83.89W
12/09/2009 M2.6 INCH BAY MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0730 AM SNOW PORT AUSTIN 44.04N 83.00W
12/09/2009 M2.0 INCH HURON MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0800 AM SNOW TIPTON 42.02N 84.06W
12/09/2009 M3.0 INCH LENAWEE MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0800 AM SNOW RICHMOND 42.81N 82.75W
12/09/2009 M2.0 INCH MACOMB MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
&&
DRKPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
956 AM EST WED DEC 09 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0235 AM SNOW WHITE LAKE 42.65N 83.50W
12/09/2009 M2.7 INCH OAKLAND MI NWS EMPLOYEE
STORM TOTAL
0341 AM SNOW MERRILL 43.41N 84.34W
12/09/2009 M3.5 INCH SAGINAW MI TRAINED SPOTTER
SNOW IS STARTING TO MIX WITH RAIN
0511 AM SNOW PINCONNING 43.86N 83.96W
12/09/2009 M4.8 INCH BAY MI TRAINED SPOTTER
6 HOUR TOTAL
0625 AM SNOW MARLETTE 43.33N 83.08W
12/09/2009 M4.5 INCH SANILAC MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0630 AM SNOW BAD AXE 43.80N 83.00W
12/09/2009 M1.5 INCH HURON MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0645 AM SNOW ORTONVILLE 42.85N 83.44W
12/09/2009 M1.7 INCH OAKLAND MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0650 AM SNOW AUBURN 43.60N 84.08W
12/09/2009 M4.8 INCH BAY MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0650 AM SNOW MANCHESTER 42.15N 84.04W
12/09/2009 M3.0 INCH WASHTENAW MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0700 AM SNOW BAY CITY 43.59N 83.89W
12/09/2009 M2.6 INCH BAY MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW VASSAR 43.37N 83.58W
12/09/2009 M1.5 INCH TUSCOLA MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW OWOSSO 43.00N 84.18W
12/09/2009 M2.2 INCH SHIAWASSEE MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW FAIRGROVE 43.52N 83.54W
12/09/2009 M3.0 INCH TUSCOLA MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW 9 W SAGINAW 43.42N 84.13W
12/09/2009 M4.0 INCH SAGINAW MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW ANN ARBOR 42.28N 83.73W
12/09/2009 M2.5 INCH WASHTENAW MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0700 AM SNOW FREELAND 43.52N 84.12W
12/09/2009 M4.0 INCH SAGINAW MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW CARO 43.49N 83.40W
12/09/2009 M2.5 INCH TUSCOLA MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0730 AM SNOW PORT AUSTIN 44.04N 83.00W
12/09/2009 M2.0 INCH HURON MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0800 AM SNOW TIPTON 42.02N 84.06W
12/09/2009 M3.0 INCH LENAWEE MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0800 AM SNOW RICHMOND 42.81N 82.75W
12/09/2009 M2.0 INCH MACOMB MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0848 AM HEAVY SNOW 3 S OIL CITY 43.57N 84.59W
12/09/2009 M6.0 INCH MIDLAND MI TRAINED SPOTTER
10 HOUR TOTAL.
0848 AM SNOW MIDLAND 43.62N 84.23W
12/09/2009 M4.0 INCH MIDLAND MI TRAINED SPOTTER
10 HR TOTAL.
&&
THE FIRST SNOW STORM OF THE SEASON AFFECTED SOUTHEAST LOWER MICHIGAN
PRODUCING WIDESPREAD ACCUMULATIONS RANGING FROM 1 NEAR THE OHIO
BORDER TO 6 INCHES OVER PARTS OF THE TRI-CITIES OVERNIGHT. SNOW
CHANGED OVER TO RAIN AS THE LOW TRACKED NORTH OF CHICAGO AND OVER
LAKE MICHIGAN BRINGING WARM AIR INTO THE REGION.
DRKPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1016 AM EST WED DEC 09 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM SNOW ROMULUS 42.22N 83.37W
12/09/2009 M0.9 INCH WAYNE MI OFFICIAL NWS OBS
6 HOUR SNOWFALL TOTAL. OBSERVATION TAKEN AT DETROIT METRO
AIRPORT.
0710 AM SNOW DUNDEE 41.96N 83.66W
12/09/2009 M0.4 INCH MONROE MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
&&
DRKPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1021 AM EST WED DEC 09 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM SNOW YALE 43.13N 82.80W
12/09/2009 M1.5 INCH ST. CLAIR MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0700 AM SNOW LAPEER 43.05N 83.32W
12/09/2009 M2.5 INCH LAPEER MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
&&
DRKPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1022 AM EST WED DEC 09 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0235 AM SNOW WHITE LAKE 42.65N 83.50W
12/09/2009 M2.7 INCH OAKLAND MI NWS EMPLOYEE
STORM TOTAL
0341 AM SNOW MERRILL 43.41N 84.34W
12/09/2009 M3.5 INCH SAGINAW MI TRAINED SPOTTER
SNOW IS STARTING TO MIX WITH RAIN
0511 AM SNOW PINCONNING 43.86N 83.96W
12/09/2009 M4.8 INCH BAY MI TRAINED SPOTTER
6 HOUR TOTAL
0625 AM SNOW MARLETTE 43.33N 83.08W
12/09/2009 M4.5 INCH SANILAC MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0630 AM SNOW BAD AXE 43.80N 83.00W
12/09/2009 M1.5 INCH HURON MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0645 AM SNOW ORTONVILLE 42.85N 83.44W
12/09/2009 M1.7 INCH OAKLAND MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0650 AM SNOW MANCHESTER 42.15N 84.04W
12/09/2009 M3.0 INCH WASHTENAW MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0650 AM SNOW AUBURN 43.60N 84.08W
12/09/2009 M4.8 INCH BAY MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW BAY CITY 43.59N 83.89W
12/09/2009 M2.6 INCH BAY MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW YALE 43.13N 82.80W
12/09/2009 M1.5 INCH ST. CLAIR MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0700 AM SNOW ROMULUS 42.22N 83.37W
12/09/2009 M0.9 INCH WAYNE MI OFFICIAL NWS OBS
6 HOUR SNOWFALL TOTAL. OBSERVATION TAKEN AT DETROIT METRO
AIRPORT.
0700 AM SNOW CARO 43.49N 83.40W
12/09/2009 M2.5 INCH TUSCOLA MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW FREELAND 43.52N 84.12W
12/09/2009 M4.0 INCH SAGINAW MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW ANN ARBOR 42.28N 83.73W
12/09/2009 M2.5 INCH WASHTENAW MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0700 AM SNOW 9 W SAGINAW 43.42N 84.13W
12/09/2009 M4.0 INCH SAGINAW MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW FAIRGROVE 43.52N 83.54W
12/09/2009 M3.0 INCH TUSCOLA MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW OWOSSO 43.00N 84.18W
12/09/2009 M2.2 INCH SHIAWASSEE MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW VASSAR 43.37N 83.58W
12/09/2009 M1.5 INCH TUSCOLA MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW LAPEER 43.05N 83.32W
12/09/2009 M2.5 INCH LAPEER MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0710 AM SNOW DUNDEE 41.96N 83.66W
12/09/2009 M0.4 INCH MONROE MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0730 AM SNOW PORT AUSTIN 44.04N 83.00W
12/09/2009 M2.0 INCH HURON MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0800 AM SNOW TIPTON 42.02N 84.06W
12/09/2009 M3.0 INCH LENAWEE MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0800 AM SNOW RICHMOND 42.81N 82.75W
12/09/2009 M2.0 INCH MACOMB MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0848 AM SNOW MIDLAND 43.62N 84.23W
12/09/2009 M4.0 INCH MIDLAND MI TRAINED SPOTTER
8 HR TOTAL.
0848 AM HEAVY SNOW 3 S OIL CITY 43.57N 84.59W
12/09/2009 M6.0 INCH MIDLAND MI TRAINED SPOTTER
8 HOUR TOTAL.
&&
THE FIRST SNOW STORM OF THE SEASON AFFECTED SOUTHEAST LOWER MICHIGAN
PRODUCING WIDESPREAD ACCUMULATIONS RANGING FROM 1 INCH NEAR THE OHIO
BORDER TO 6 INCHES OVER PARTS OF THE TRI-CITIES OVERNIGHT. SNOW
CHANGED OVER TO RAIN AS THE LOW TRACKED NORTH OF CHICAGO AND OVER
LAKE MICHIGAN BRINGING WARMER AIR INTO THE REGION.
DRKPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1025 AM EST WED DEC 09 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0235 AM SNOW WHITE LAKE 42.65N 83.50W
12/09/2009 M2.7 INCH OAKLAND MI NWS EMPLOYEE
STORM TOTAL
0341 AM SNOW MERRILL 43.41N 84.34W
12/09/2009 M3.5 INCH SAGINAW MI TRAINED SPOTTER
SNOW IS STARTING TO MIX WITH RAIN
0511 AM SNOW PINCONNING 43.86N 83.96W
12/09/2009 M4.8 INCH BAY MI TRAINED SPOTTER
6 HOUR TOTAL
0625 AM SNOW MARLETTE 43.33N 83.08W
12/09/2009 M4.5 INCH SANILAC MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0630 AM SNOW BAD AXE 43.80N 83.00W
12/09/2009 M1.5 INCH HURON MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0645 AM SNOW ORTONVILLE 42.85N 83.44W
12/09/2009 M1.7 INCH OAKLAND MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0650 AM SNOW MANCHESTER 42.15N 84.04W
12/09/2009 M3.0 INCH WASHTENAW MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0650 AM SNOW AUBURN 43.60N 84.08W
12/09/2009 M4.8 INCH BAY MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW YALE 43.13N 82.80W
12/09/2009 M1.5 INCH ST. CLAIR MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0700 AM SNOW BAY CITY 43.59N 83.89W
12/09/2009 M2.6 INCH BAY MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW LAPEER 43.05N 83.32W
12/09/2009 M2.5 INCH LAPEER MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW VASSAR 43.37N 83.58W
12/09/2009 M1.5 INCH TUSCOLA MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW OWOSSO 43.00N 84.18W
12/09/2009 M2.2 INCH SHIAWASSEE MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW FAIRGROVE 43.52N 83.54W
12/09/2009 M3.0 INCH TUSCOLA MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW 9 W SAGINAW 43.42N 84.13W
12/09/2009 M4.0 INCH SAGINAW MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW ANN ARBOR 42.28N 83.73W
12/09/2009 M2.5 INCH WASHTENAW MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0700 AM SNOW FREELAND 43.52N 84.12W
12/09/2009 M4.0 INCH SAGINAW MI TRAINED SPOTTER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW CARO 43.49N 83.40W
12/09/2009 M2.5 INCH TUSCOLA MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0700 AM SNOW ROMULUS 42.22N 83.37W
12/09/2009 M0.9 INCH WAYNE MI OFFICIAL NWS OBS
6 HOUR SNOWFALL TOTAL. OBSERVATION TAKEN AT DETROIT METRO
AIRPORT.
0700 AM SNOW HOWELL 42.61N 83.94W
12/09/2009 M1.5 INCH LIVINGSTON MI NWS EMPLOYEE
6 HOUR SNOWFALL TOTAL.
0710 AM SNOW DUNDEE 41.96N 83.66W
12/09/2009 M0.4 INCH MONROE MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0730 AM SNOW PORT AUSTIN 44.04N 83.00W
12/09/2009 M2.0 INCH HURON MI CO-OP OBSERVER
8 HOUR SNOWFALL TOTAL.
0800 AM SNOW TIPTON 42.02N 84.06W
12/09/2009 M3.0 INCH LENAWEE MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0800 AM SNOW RICHMOND 42.81N 82.75W
12/09/2009 M2.0 INCH MACOMB MI CO-OP OBSERVER
6 HOUR SNOWFALL TOTAL.
0848 AM HEAVY SNOW 3 S OIL CITY 43.57N 84.59W
12/09/2009 M6.0 INCH MIDLAND MI TRAINED SPOTTER
8 HOUR TOTAL.
0848 AM SNOW MIDLAND 43.62N 84.23W
12/09/2009 M4.0 INCH MIDLAND MI TRAINED SPOTTER
8 HR TOTAL.
&&
THE FIRST SNOW STORM OF THE SEASON AFFECTED SOUTHEAST LOWER MICHIGAN
PRODUCING WIDESPREAD ACCUMULATIONS RANGING FROM 1 INCH NEAR THE OHIO
BORDER TO 6 INCHES OVER PARTS OF THE TRI-CITIES OVERNIGHT. SNOW
CHANGED OVER TO RAIN AS THE LOW TRACKED NORTH OF CHICAGO AND OVER
LAKE MICHIGAN BRINGING WARMER AIR INTO THE REGION.
DRKThe national radar mosaic for the moment the first event began.
4 high wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2009Every state in 2009This day in weather historyWarnings in Michigan, December 2009
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: 204484, 204485, 204486, 204487.