Law enforcement from Jackson county reported that several trees were blown down by a severe thunderstorm during the mid evening hours of June 23rd.
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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.
Law enforcement from Jackson county reported that several trees were blown down by a severe thunderstorm during the mid evening hours of June 23rd.
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 Jun 23, 6:31 PM EST, 2 hours 9 minutes earlier.
AREA FORECAST DISCUSSION...CORRECTED SHORT TERM NATIONAL WEATHER SERVICE GRAND RAPIDS MI 731 PM EDT WED JUN 23 2010 LATEST UPDATE...AVIATION... .SYNOPSIS...(400 PM EDT WED JUN 23 2010) A COLD FRONT SYSTEM WILL MOVE SOUTHEAST THROUGH SOUTHWEST LOWER MICHIGAN OVERNIGHT. AHEAD OF THIS FRONT...STRONG TO SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP BY EARLY EVENING. DAMAGING WINDS...HEAVY RAINFALL...LARGE HAIL...AND EVEN A TORNADO WILL ALL BE POSSIBLE. HIGH PRESSURE WILL THEN BUILD IN ACROSS THE AREA FOR THE DAY ON THURSDAY AND MOST OF FRIDAY. THIS WILL BRING MORE COMFORTABLE AIR IN ACROSS THE AREA. THE WEEKEND LOOKS UNSETTLED WITH A CHANCE OF SHOWERS AND THUNDERSTORMS. THE NEXT WORK WEEK LOOKS DRY WITH NEAR SEASONAL TEMPERATURES. && .SHORT TERM...(433 PM EDT WED JUN 23 2010) (TONIGHT THROUGH THURSDAY) MAIN CONCERN IS CONVECTIVE STRENGTH AND TIMING OVERNIGHT. AFTERNOON SWODY1 UPDATE FROM SPC IS PRETTY MUCH THE SAME AS THE LATE MORNING UPDATE. THE ENTIRE CWA REMAINS IN AT LEAST A SLIGHT RISK FOR SEVERE WEATHER. 20Z SHOWS 40-50 KT EFFECTIVE SHEAR OVER MOST OF LOWER MI WITH MLCAPE VALUES GREATER THAN 1000 J/KG LIMITED TO EXTREME SRN LOWER MI. WATER VAPOR IMAGES SHOW AN AREA OF SUBSIDENCE WORKING ACROSS WI AT THIS TIME WITH VISIBLE CHANNEL SHOWING FAIRLY UNIMPRESSIVE SHALLOW CUMULUS CONVECTION BENEATH THIS AREA. SOME EVIDENCE OF SLIGHTLY DEEPER CONVECTION BEGINNING TO DEVELOP ALONG COLD FRONT THAT EXTENDED FROM NW WI THROUGH NE KS AT 20Z. CURRENTLY FAVOR A SCENARIO OF CONVECTION BEGINNING NEAR OR SOUTH OF I-94 CORRIDOR IN THE EARLY EVENING AND MOVING SE OUT OF THE AREA... FOLLOWED BY CONVECTION BREAKING OUT OVER MUCH OF THE REST OF LOWER MI AROUND SUNSET AHEAD OF THE FRONT. DEEP LAYER SHEAR AND MLCAPE VALUES ARE SUFFICIENT FOR STRONG/SEVERE MULTICELL CONVECTION. THE MAIN THREAT CONTINUES TO BE WIND...HOWEVER BELIEVE LARGE HAIL IS MORE OF A THREAT NOW GIVEN IMPRESSIVE -10 TO -30 CAPE VALUES UPSTREAM OVER WI. TORNADO THREAT STILL LOOKS RELATIVELY LOW GIVEN POOR CONCENTRATION OF SHEAR BELOW 1 KM. CONVECTION SHOULD CLEAR THE CWA SHORTLY AFTER MIDNIGHT WITH NO SIGNIFICANT WEATHER EXPECTED THROUGH THURSDAY. && .LONG TERM...(400 PM EDT WED JUN 23 2010) (THURSDAY NIGHT THROUGH WEDNESDAY) HAVE ADDED POPS FOR FRIDAY NIGHT. BY THEN THE SURFACE AND UPPER RIDGE BREAKS DOWN AND A WARM FRONT WILL SET UP OVER NRN LOWER. AN MCS COULD POTENTIALLY TRACK ALONG AND SOUTH OF THIS BOUNDARY. WE SHOULD REMAIN IN AN ACTIVE PATTERN THROUGH THE WEEKEND AS WE STAY IN AN UNSTABLE AIR MASS. THE MEDIUM RANGE MODELS ARE IN GOOD AGREEMENT SHOWING A COLD FRONT BARRELING INTO THIS MUGGY AIR MASS SUNDAY EVENING. WILL GO WITH A DRY FORECAST FOR THE FIRST HALF OF NEXT WEEK AS A DRY NORTHWEST FLOW SHOULD SET UP. HAVE BUMPED TEMPS WARMER FROM FRIDAY NIGHT THROUGH SUNDAY AS THE TREND IS FOR SW LOWER MICHIGAN TO BE IN THE WARM SECTOR. HUMIDITY LEVELS WILL ALSO BE CLIMBING IN THIS TIME FRAME. && .AVIATION...(731 PM EDT WED JUN 23 2010) STRONG THUNDERSTORMS WILL BE WITHIN THE AREA THIS EVENING. SOME OF THIS STORMS WILL CONTAIN STRONG GUSTY WINDS AND OCCASIONAL IFR IN HEAVY RAIN. THE STORMS WILL EXIT FROM WEST TO EAST BY 06Z. THERE SHOULD BE ENOUGH WIND/MIXING TO PREVENT FOG BEHIND THE RAIN. THEREFORE VFR CONDITIONS WILL PREVAIL. SKIES ARE EXPECTED TO CLEAR TOWARD MID DAY THURSDAY. && .MARINE...(205 PM EDT WED JUN 23 2010) DEEPER MIXING HAS ALLOWED THE LOW LEVEL JET TO MIX DOWN AND SFC WINDS ARE GUSTING TO 30-35 KNOTS ALONG THE LAKESHORE AT 2 PM. WEB CAMS REVEAL ROUGH CONDITIONS AS WELL. HAVE ISSUED A SMALL CRAFT ADVISORY THROUGH TONIGHT TO COVER THE CHANGING CONDITIONS. && .HYDROLOGY...(100 PM EDT WED JUN 23 2010) BIGGEST CONCERN FROM A HYDROLOGICAL STANDPOINT WILL BE THE NEXT 24 HOURS AS AT LEAST ONE MORE ROUND OF RAIN WILL BE LIKELY ACROSS THE AREA. A FLOOD WATCH IS IN EFFECT THROUGH THIS EVENING FOR AREAS NEAR AND SOUTH OF I-96. EARLY MORNING STORMS DROPPED ABOUT HALF AN INCH OF RAIN SOUTHWEST OF A LUDINGTON TO JACKSON LINE...WITH SOME AREAS REPORTING WELL OVER AN INCH SOUTHWEST OF A GRAND HAVEN TO BATTLE CREEK LINE. ANTECEDENT RAINFALL AMOUNTS OF SEVERAL INCHES IN THE WATCH AREA OVER THE PAST WEEK...COMBINED WITH HIGH PWATS AND EFFICIENT RAIN PRODUCTION JUSTIFIES THE CONTINUATION OF THIS WATCH. MORE SIGNIFICANT FLOODING CONCERNS SHOULD BE LOCALIZED DUE TO TRAINING OF CONVECTIVE CELLS. DEPENDING ON HOW THINGS EVOLVE THIS AFTERNOON...MAINSTEM RIVERS LIKELY WILL HAVE AT LEAST SOME RESPONSE OVER THE NEXT FEW DAYS. && .GRR WATCHES/WARNINGS/ADVISORIES... MI....FLASH FLOOD WATCH UNTIL MIDNIGHT EDT FOR AREAS ALONG AND SOUTH OF I-96. LM....SMALL CRAFT ADVISORY UNTIL 5 AM THURSDAY SOUTH OF PENTWATER. && SYNOPSIS: TJT SHORT TERM: TJT LONG TERM: JK AVIATION: JK MARINE: MEADE HYDROLOGY: TJT
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 606 PM EDT WED JUN 23 2010 MIZ037>040-043>046-050>052-056>059-064>067-071>074-240815- MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON- MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON- INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON- 606 PM EDT WED JUN 23 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TONIGHT A SLIGHT RISK FOR SEVERE THUNDERSTORMS EXISTS THROUGH TONIGHT. ANOTHER ROUND OF THUNDERSTORMS IS EXPECTED FOR SOUTHWEST LOWER MICHIGAN TONIGHT. SIGNIFICANT DAMAGING WINDS IN EXCESS OF 75 MPH WILL BE POSSIBLE WITH THE STORMS. LARGE HAIL AND NEAR CONTINUOUS LIGHTNING ARE EXPECTED AS WELL. AN ISOLATED TORNADO WILL ALSO BE POSSIBLE. RAINFALL WILL BE LOCALLY HEAVY WITH THE THUNDERSTORMS AND IF THEY PERSIST OR REPEAT OVER THE SAME AREA FLOODING COULD OCCUR. THE MAIN STORM MOTION WILL BE EAST AROUND 45 MPH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS WITH LOCALLY HEAVY RAIN WILL BE POSSIBLE FOR THE WEEKEND. ELEVATED WATER LEVELS ARE POSSIBLE ON AREA RIVERS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THROUGH TONIGHT. LMZ844>849-240815- ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI- HOLLAND TO GRAND HAVEN MI-GRAND HAVEN TO WHITEHALL MI- WHITEHALL TO PENTWATER MI-PENTWATER TO MANISTEE MI- 606 PM EDT WED JUN 23 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TONIGHT FAST MOVING THUNDERSTORMS WITH DANGEROUS WINDS...HAIL AND FREQUENT LIGHTNING WILL POSE A RISK FOR MARINERS THROUGH TONIGHT. WAVES WILL BE HIGHER NEAR ANY THUNDERSTORMS. THE STORMS WILL BE TRACKING EAST AT AROUND 45 MPH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS ARE AGAIN POSSIBLE THIS WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS EXPECTED AT TIMES THROUGH TONIGHT. MJS JK
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 814 PM EDT WED JUN 23 2010 MIZ073-074-240115- CALHOUN-JACKSON- 814 PM EDT WED JUN 23 2010 ...SIGNIFICANT WEATHER ADVISORY... AT 813 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 18 MILES WEST OF JACKSON...MOVING EAST AT 30 MPH. FUNNEL CLOUDS...ONE HALF INCH DIAMETER HAIL...WINDS GREATER THAN 40 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF MODERATE DOWNPOURS...ARE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... PULASKI... CONCORD... PARMA... HORTON... SANDSTONE... SPRING ARBOR... LIBERTY TWP... JACKSON... VANDERCOOK LAKE... CLARK LAKE... MICHIGAN CENTER... LEONI... BROOKLYN... NAPOLEON... GRASS LAKE... PRECAUTIONARY/PREPAREDNESS ACTIONS... GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EDT THURSDAY MORNING FOR SOUTHWESTERN MICHIGAN. && LAT...LON 4212 8486 4230 8486 4237 8413 4208 8413 TIME...MOT...LOC 0014Z 269DEG 27KT 4221 8475 NJJ
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
902 PM EDT WED JUN 23 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0850 PM TSTM WND GST 4 SSE JACKSON 42.19N 84.38W
06/23/2010 E45 MPH JACKSON MI TRAINED SPOTTER
&&
CSCHOLTENPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
908 PM EDT WED JUN 23 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0858 PM HEAVY RAIN 3 W JACKSON 42.24N 84.47W
06/23/2010 M1.01 INCH JACKSON MI COCORAHS
1.01 INCHES IN 22 MINUTES. STANDING WATER IN THE STREET.
&&
CSCHOLTENPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
928 PM EDT WED JUN 23 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0904 PM TSTM WND GST 5 SW GRASS LAKE 42.20N 84.28W
06/23/2010 E45.00 MPH JACKSON MI TRAINED SPOTTER
ESTIMATED 35-45 MPH WINDS WITH HEAVY RAIN.
&&
CSCHOLTENThe Detroit radar (KDTX), 99 km away, was scanning. The volume nearest the first event began at 01:40 UTC.
1 thunderstorm wind. Local standard time, as filed.
Jackson county central dispatch reported that several trees were blown down across portions of the county. Very heavy rainfall also caused some street flooding in Napoleon and Vandercook Lake.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2010Every state in 2010This day in weather historyWarnings in Michigan, June 2010
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: 235762.