A strong low pressure system brought a combination of snow and ice to central lower Michigan. The maximum snowfall from this event was 8 to 9 inches and up to a half of an inch of ice accumulation was also reported.
Every event with a place to put it; 9 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 GRR wrote it up.
A strong low pressure system brought a combination of snow and ice to central lower Michigan. The maximum snowfall from this event was 8 to 9 inches and up to a half of an inch of ice accumulation was also reported.
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 Grand Rapids, MI wrote its last area forecast discussion before the first event at Mar 1, 4:32 AM EST, 1 hour 28 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 432 AM EST THU MAR 1 2007 .SHORT TERM... LATEST SFC ANALYSIS AS OF 08Z SHOWS LOW PRESSURE CENTERED NEAR KMKC WITH A WARM FRONT EXTENDING FROM THE LOW TO NEAR AND ALONG THE OH RIVER. PLENTY OF CONVECTION NORTH OF THE FRONT OVER MO THIS MORNING WITH ADDITIONAL CONVECTION FIRING OVER IL...IN...AND OH. THE MAIN FORECAST CHALLENGE IS DEALING WITH THE CURRENT HEADLINES IN PLACE. CONVECTION IS EXPANDING FROM MO...ALL THE WAY EAST THROUGH OH AS 50+ KT LLJ CONTINUES TO DEVELOP AND EXPAND EASTWARD SOUTH OF THE STATE THIS MORNING. THE NOSE OF THE JET IS OVER FAR NRN IN AND OH...WHICH IS WHERE THE MOST PCPN CAN BE EXPECTED. EVEN THOUGH THE LLJ CORE IS SOUTH OF THE AREA...STILL PLENTY OF WARM AND MOIST AIR ALOFT BEING ADVECTED OVER THE AREA. SHOWERS CONTINUE TO DEVELOP OVERHEAD...AND ALSO MOVE NORTHWARD OVER THE CWFA FROM NRN IN. THIS WILL CONTINUE TO BE THE CASE OVER THE NEXT FEW HOURS UNTIL THE LLJ FOCUSES EAST OF THE AREA. AFTER THAT...CONTINUING ISENTROPIC ASCENT WILL KEEP LIGHTER PCPN AROUND FOR THE LATE MORNING/EARLY AFTERNOON HOURS. THE PCPN IS MAINLY RAIN OVER IN...BUT THIS WILL TRANSITION TO MIXED PCPN AS IT HEADS NORTH OVER THE CWFA. TEMPS HAVE PRETTY MUCH FALLEN TO OR BELOW FREEZING NORTH OF I-94 WITH DEW POINTS GENERALLY IN THE MID 20S. PCPN WILL LIKELY BE IN THE FORM OF RAIN OR FREEZING RAIN ALONG THE I-94 CORRIDOR. EVEN THOUGH TEMPS ARE CURRENTLY ABOVE FREEZING...DRIER AIR ADVECTING IN FROM THE EAST AT THE SFC WILL HELP TO COOL TEMPS VIA EVAPORATIVE COOLING ONCE PCPN BECOMES HEAVY ENOUGH. THIS WILL KEEP THE POTENTIAL FOR FREEZING RAIN IN PLACE FOR THIS MORNING THERE. TEMPS SHOULD THEN WARM ABOVE FREEZING BY MID MORNING AS ENOUGH WARM AIR MOVES UP INTO THE AREA. NORTH OF I-94...TO JUST NORTH OF THE I-96 CORRIDOR...PCPN THAT OCCURS WILL START OUT AS SNOW AND SLEET...AND IS STILL EXPECTED TO TRANSITION TO FREEZING RAIN THIS MORNING. WE DO STILL EXPECT THAT ENOUGH WARM AIR WILL TRANSITION PCPN TO ALL LIQUID AROUND NOON OR SO. FOR THESE AREAS...WE EXPECT THAT ANY ICE ACCUMULATION WILL REMAIN UNDER A QUARTER OF AN INCH EVEN IF THERE IS MORE ACTUAL PCPN THAT FALLS. RUNOFF FROM THE HEAVIER BURSTS OF PCPN AND LATENT HEAT WILL KEEP SOME PCPN THAT FALLS FROM BECOMING ICE. ALSO...THE HEAVIEST PCPN WILL OCCUR WHERE TEMPS WILL REMAIN AT OR BELOW FREEZING THE SHORTEST AMOUNT OF TIME. SOME THUNDER WILL BE POSSIBLE THIS MORNING ALONG THE I-94 CORRIDOR AS CONVECTION DOWN SOUTH MAY SNEAK IN. 750MB BASED LI/S GO SLIGHTLY BELOW ZERO THIS MORNING OVER THE SOUTH. UP NORTH...PCPN WILL START OUT AS SNOW THIS MORNING AS THE ENTIRE THERMAL PROFILE REMAINS BELOW FREEZING. PCPN SHOULD NOT BE THAT HEAVY AS THIS AREA WILL BE THE FURTHEST AWAY FROM THE LLJ THIS MORNING. THIS AREA SHOULD STILL SEE SOME PCPN AS A SHORT WAVE MOVES UP INTO THIS AREA AND CONTINUING ISENTROPIC ASCENT REMAINS. PCPN WILL THEN TRANSITION TO FREEZING RAIN DURING THE EARLY TO MID PART OF THE AFTERNOON AS ABOVE FREEZING AIR ALOFT MOVES OVERHEAD AND SFC TEMPS REMAIN BELOW FREEZING WITH THE COOLER AND DRIER AIR COMING IN FROM THE EAST. AN INCH OR TWO OF SNOW WILL BE POSSIBLE UP NORTH BEFORE THE PCPN CHANGES OVER TO FREEZING RAIN. WITH THE MIXED PCPN EXPECTED UP NORTH IN COMBINATION WITH THE ICE ACCUMULATIONS EXPECTED TO EXCEED A QUARTER OF AN INCH...THE WINTER STORM WARNING LOOKS GOOD FOR NOW. THIS HEADLINE MAY VERY WELL NEED TO BE MIGRATED OVER TO AN ICE STORM WARNING AS PCPN BECOMES MAINLY FREEZING RAIN. AFTER THE PCPN THIS MORNING ASSOCIATED WITH THE LLJ AND THEN THE ONGOING ISENTROPIC ASCENT LATER THIS MORNING AND THIS AFTERNOON... THE MAIN AREA OF PCPN EXPECTED TO AFFECT LOWER MICHIGAN WILL COME JUST AHEAD OF THE OCCLUDED FRONT EARLY THIS EVENING. JUST AHEAD OF THE FRONT AS THE SYSTEM IS OCCLUDING...THE DRY SLOT WILL BEGIN TO WORK IN IN THE MID AND HIGH LEVELS...ALLOWING A BIT MORE INSTABILITY TO BUILD OVER THE AREA. SHOWALTER INDICES FALL DOWN TO AROUND -1 TO -2C AND THETA E IS SHOWN TO DECREASE WITH HEIGHT A BIT. PCPN SHOULD REMAIN ALL RAIN OVER THE SRN HALF OF THE CWFA. THERE IS A CHANCE THAT EVEN THE NRN SECTION OF THE CWFA WILL WARM BARELY ABOVE FREEZING AND PCPN WOULD BE LIQUID THERE ALSO. WE BELIEVE THOUGH THAT TEMPS WILL REMAIN BELOW FREEZING OVER THE NE CORNER OF THE CWFA...AND PCPN WILL BE MAINLY FREEZING RAIN. THERE IS POTENTIAL THAT HALF AN INCH OR MORE OF ICE WILL ACCUMULATE WITH LOCALLY MORE POSSIBLE. PCPN WILL THEN TRANSITION OVER TO SNOW OVER THE FAR NORTH LATER THIS EVENING AS DYNAMIC COOLING TAKES PLACE WITH THE OCCLUSION TAKING PLACE. SNOW SHOULD BE SHORT LIVED AS DEEP MOISTURE THEN PULLS AWAY AS THE DRY SLOT MOVES OVER. ENOUGH MOISTURE LOOKS TO MOVE IN LATE TO GET SCATTERED SNOW SHOWERS GOING AS H850 TEMPS COOL TO -8C TO -10C AND THE UPPER ENERGY MOVES IN. FOR THE FRI THROUGH SAT TIMEFRAME...SNOW WILL REMAIN LIKELY FOR MOST OF THE CWFA AS THE UPPER LOW SLOWLY ROTATES ACROSS THE CWFA AND WEAKENS. DEEP MOISTURE WILL MOVE BACK IN OVER MOST OF THE CWFA AS THE WRAP AROUND MOISTURE ROTATES OVERHEAD. H850 TEMPS ARE EXPECTED TO FALL FROM THE -8C TO -10C TEMPS LATE THU NIGHT TO AROUND -15C BY SAT AFTERNOON. THE FLOW AROUND THE OCCLUDED LOW WILL START OUT FROM THE SW FRI AND FRI EVENING BEFORE TRANSITIONING TO MORE OF A NW FLOW AS THE LOW MOVES EAST. ALL AREAS WILL SEE A GOOD SHOT AT SOME SNOW...WITH LAKE ENHANCEMENT OCCURRING FOR SW FLOW FAVORED AREAS FRI AND FRI EVENING. NW FLOW FAVORED AREAS WILL THEN BECOME FAVORABLE FOR SNOW FRI NIGHT AND SAT. .LONG TERM... THE EXTENDED PERIOD LOOKS PRETTY UNEVENTFUL. SOME SNOW SHOWERS MAY LINGER SATURDAY NIGHT INTO EARLY SUNDAY BEFORE THE H5 TROUGH AND COLD AIR LIFTS OUT. THEN IT LOOKS LIKE A MUCH FLATTER/SPLIT FLOW PATTERN ALOFT FOR MONDAY THROUGH WEDNESDAY. HAVE OPTED FOR A DRY FCST DURING THIS TIME WITH ONLY WEAK/MOISTURE STARVED FEATURES IN THE NRN STREAM BRUSHING SW MI. && .GRR WATCHES/WARNINGS/ADVISORIES... WINTER STORM WARNING NORTHERN TWO ROWS OF THE CWA...ALSO INCLUDING MONTCALM AND GRATIOT THROUGH THURSDAY EVENING. WINTER WEATHER ADVISORY ALLEGAN...BARRY...EATON...INGHAM COUNTIES NORTHWARD TO THE WARNING AREA THROUGH MIDDAY THURSDAY. FREEZING RAIN ADVISORY FOR THE INTERSTATE 94 ROW OF COUNTIES THURSDAY MORNING. SMALL CRAFT ADVISORY LATE TONIGHT AND THURSDAY. && NJJ MEADE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 555 AM EST THU MAR 1 2007 MIZ037>040-043>046-050>052-056>059-064>067-071>074-021015- MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON- MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON- INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON- 555 AM EST THU MAR 1 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT A SIGNIFICANT ICE STORM IS LIKELY NORTH OF INTERSTATE 96 TODAY AND TONIGHT... WITH UP TO A HALF INCH OF ICE ACCUMULATION. THIS MAY RESULT IN DOWNED TREE LIMBS AND POWER LINES WITH SCATTERED POWER OUTAGES. THE PRECIPITATION WILL BEGIN AS MOSTLY SNOW THIS MORNING... WITH AN INCH OR TWO OF ACCUMULATION BEFORE CHANGING TO FREEZING RAIN AND SLEET. SOME THUNDERSTORMS WILL EVEN BE POSSIBLE. ALONG AND SOUTH ON INTERSTATE 96 TODAY THERE WILL BE A PERIOD OF FREEZING RAIN AND SLEET THIS MORNING THAT WILL CHANGE TO ALL RAIN BY THIS AFTERNOON. SCATTERED THUNDERSTORMS MAY PRODUCE LOCALLY HEAVY RAINFALL WHICH COMBINED WITH SNOWMELT COULD RESULT IN EXCESSIVE PONDING OF WATER. SOME AREAS OF FOG WILL BE POSSIBLE THIS AFTERNOON AND EVENING AS WELL. THE HEAVIEST PRECIPITATION IS EXPECTED TO END AROUND MIDNIGHT TONIGHT... THEN ANY LINGERING LIGHT PRECIPITATION WILL CHANGE OVER TO SNOW AFTER MIDNIGHT. THE CAUSE OF THE ACTIVE WEATHER IS A STRONG LOW PRESSURE SYSTEM TRACKING NORTHEAST FROM THE KANSAS CITY MISSOURI AREA. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NUMEROUS SNOW SHOWERS ARE EXPECTED ON FRIDAY AND SATURDAY AS THE LOW PRESSURE AREA MOVES SLOWLY EAST WHILE WEAKENING OVER THE GREAT LAKES REGION. SNOW ACCUMULATIONS WILL BE POSSIBLE...PARTICULARLY IN THE SNOWBELT AREAS ALONG AND WEST OF HIGHWAY 131. SNOW SHOWERS WILL DIMINISH IN COVERAGE AND INTENSITY ON SUNDAY AND END BY SUNDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED...BUT SNOW...SLEET AND ICING REPORTS WOULD BE GREATLY APPRECIATED. YOU CAN SUBMIT THESE REPORTS AT WWW.WEATHER.GOV/GRR/SPOTTER. LMZ844>849-021015- ST JOSEPH TO SOUTH HAVEN-SOUTH HAVEN TO HOLLAND- HOLLAND TO GRAND HAVEN-GRAND HAVEN TO WHITEHALL- WHITEHALL TO PENTWATER-PENTWATER TO MANISTEE- 555 AM EST THU MAR 1 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT WAVES OF 4 FEET OR MORE AND SCATTERED THUNDERSTORMS WILL POSE A HAZARD TO SMALL CRAFT TODAY AND TONIGHT. SLEET AND FREEZING RAIN WILL OCCUR NORTH OF MUSKEGON... BEGINNING AS SNOW THIS MORNING. FREEZING RAIN WILL CHANGE TO RAIN SOUTH OF MUSKEGON BY AFTERNOON. THE HEAVIEST PRECIPITATION IS EXPECTED TO END AROUND MIDNIGHT TONIGHT... THEN ANY LINGERING LIGHT PRECIPITATION WILL CHANGE OVER TO SNOW AFTER MIDNIGHT. THE CAUSE OF THE ACTIVE WEATHER IS A STRONG LOW PRESSURE SYSTEM TRACKING NORTHEAST FROM THE KANSAS CITY MISSOURI AREA. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY LARGE WAVES WILL PERSIST FRIDAY THROUGH WEDNESDAY. NUMEROUS SNOW SHOWERS ARE EXPECTED ON FRIDAY AND SATURDAY. SNOW SHOWERS WILL DIMINISH IN COVERAGE AND INTENSITY ON SUNDAY AND END SUNDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. MEADE
The national radar mosaic for the moment the first event began.
9 winter storm. Local standard time, as filed.
Five inches of snow and four tenths of an inch of ice accumulation from freezing rain was reported.
Nine inches of snow and a tenth of an inch of ice accumulation from freezing rain was reported.
Nine inches of snow and a half of an inch of ice accumulation from freezing rain was reported.
Six inches of snow and three tenths of an inch of ice accumulation from freezing rain was reported.
Nine inches of snow and four tenths of an inch of ice accumulation from freezing rain was reported.
Nine inches of snow and three tenths of an inch of ice accumulation from freezing rain was reported.
Eight inches of snow and three tenths of an inch of ice accumulation from freezing rain was reported.
Six inches of snow and three tenths of an inch of ice accumulation from freezing rain was reported.
Two inches of snow and three tenths of an inch of ice accumulation from freezing rain was reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2007Every state in 2007This day in weather historyWarnings in Michigan, March 2007
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: 20471, 20472, 20473, 20474, 20475, 20476, 20477, 20478, 20479.