Alert archive / Michigan / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 75, NWS Grand Rapids, MI

August 23, 2007Allegan County, Kalamazoo County, Van Buren County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 23, 2007, 5:17 PM EDT for Allegan County, Kalamazoo County, Van Buren County, Michigan. It was in force for 88 min. 12 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 23, 2007, 5:17 PM EDT (21:17 UTC)
Expired: Aug 23, 2007, 6:45 PM EDT
In force: 88 min
Issued by: NWS Grand Rapids, MI
Area: Counties, with a storm outline in the text

Counties Allegan County, MI, Kalamazoo County, MI, Van Buren County, MI

The radar

The Grand Rapids radar (KGRR), 55 km from the middle of the area, began a volume at 21:20 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.

What was reported inside it

Time	Report	Where	Remark
Aug 23, 5:52 PM EDT	MARINE TSTM WIND 69	South Haven, MI	REPORTED BY GLERL BUOY.
Aug 23, 5:52 PM EDT	MARINE TSTM WIND 69	South Haven, MI	REPORTED BY GLERL WEATHER OBSERVING SYSTEM. CORRECTED FROM THE PREVIOUS REPORT.
Aug 23, 6:00 PM EDT	TSTM WND DMG	Bloomingdale, MI	WIND GUST MEASURED TO 69MPH IN BLOOMINGDALE. NUMEROUS TREES AND POWER LINES DOWN WITH SOME TREES BLOCKING ROADS. A TREE WAS REPORTED DOWN ON A HOUSE AS WELL.
Aug 23, 6:04 PM EDT	TSTM WND DMG	Allegan, MI	MULTIPLE TREES DOWN ON HOUSES AND ROADS ACROSS THE CITY OF ALLEGAN.
Aug 23, 6:07 PM EDT	TSTM WND DMG	Allegan, MI	SEVERAL LARGE TREES DOWN ON THE SOUTH SIDE OF ALLEGAN.
Aug 23, 6:08 PM EDT	TSTM WND DMG	Paw Paw, MI	TREES BLOCKING M-40 NEAR PAW PAW. TREES AND POWER LINES DOWN COUNTYWIDE.
Aug 23, 6:11 PM EDT	TSTM WND DMG	Fennville, MI	TREES DOWN ON CARS IN FENNVILLE. TREES BLOCKING M-89 IN FENNVILLE.
Aug 23, 6:13 PM EDT	TSTM WND GST 65	Otsego, MI	ANEMOMETER REPORT BY TRAINED SPOTTER.
Aug 23, 6:14 PM EDT	TSTM WND DMG	3 W Portage, MI	ESTIMED WINDS OF 65 MPH. WIDESPREAD TREE DAMAGE WITH POWER OUTAGES.
Aug 23, 6:22 PM EDT	TSTM WND DMG	3 W Portage, MI	ESTIMED WINDS OF 65 MPH. WIDESPREAD TREE DAMAGE WITH POWER OUTAGES.
Aug 23, 6:23 PM EDT	TSTM WND DMG	Wayland, MI	NUMEROUS TREES AND POWER LINES DOWN IN THE CITY OF WAYLAND AND SURROUNDING AREAS.
Aug 23, 6:23 PM EDT	TSTM WND GST 59	Kalamazoo, MI	OFFICIAL REPORT FROM ASOS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 10 storm reports to this severe thunderstorm warning; the first came 43 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 23, 4:09 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 9.3 hours before the alert went out and 199 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1330 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 43 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KGRR 232117
SVRGRR
MIC005-077-159-232245-
/O.NEW.KGRR.SV.W.0075.070823T2117Z-070823T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
517 PM EDT THU AUG 23 2007

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS
HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ALLEGAN COUNTY IN SOUTHWEST MICHIGAN
  KALAMAZOO COUNTY IN SOUTHWEST MICHIGAN
  VAN BUREN COUNTY IN SOUTHWEST MICHIGAN

* UNTIL 645 PM EDT

* AT 516 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED ALONG A
  LINE EXTENDING FROM 40 MILES WEST OF FENNVILLE TO 45 MILES
  SOUTHWEST OF HARTFORD...AND MOVING NORTHEAST AT 50 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  TOQUIN...MIAMI PARK AND HAWKHEAD BY 555 PM EDT
  SPRING GROVE...LEISURE AND KIBBIE BY 600 PM EDT
  PEARL...NEW RICHMOND AND EAST SAUGATUCK BY 605 PM EDT
  TEAPOT DOME BY 610 PM EDT

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS AND LARGE HAIL.

DAMAGING WINDS IN EXCESS OF 70 MILES AN HOUR ARE EXPECTED FROM THIS
STORM. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED.

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

LAT...LON 4274 8617 4235 8629 4212 8619 4211 8539
      4232 8534 4243 8557 4274 8557

$$

93

2 follow-up statements

000 
WWUS53 KGRR 232200
SVSGRR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
559 PM EDT THU AUG 23 2007

MIC005-077-159-232245-
/O.CON.KGRR.SV.W.0075.000000T0000Z-070823T2245Z/
ALLEGAN MI-KALAMAZOO MI-VAN BUREN MI-
559 PM EDT THU AUG 23 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR VAN BUREN...KALAMAZOO AND ALLEGAN COUNTIES...

AT 558 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM SAUGATUCK TO PAW PAW...MOVING EAST AT 55 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  ENGLISHVILLE...SOUTH MONTEREY...OAKLAND AND MILL GROVE BY 605 PM
  EDT
  TEXAS CORNERS...OAKWOOD...DOUGHERTY CORNERS AND WATSON BY 610 PM
  EDT
  NORTHWOOD AND MILWOOD BY 615 PM EDT

DAMAGING WINDS IN EXCESS OF 70 MILES AN HOUR ARE EXPECTED FROM THIS
STORM. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED.

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

LAT...LON 4274 8617 4235 8629 4212 8619 4211 8539
      4232 8534 4243 8557 4274 8557

$$
DUKE

000 
WWUS53 KGRR 232244
SVSGRR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
645 PM EDT THU AUG 23 2007

MIC005-077-159-232253-
/O.EXP.KGRR.SV.W.0075.000000T0000Z-070823T2245Z/
ALLEGAN MI-KALAMAZOO MI-VAN BUREN MI-
645 PM EDT THU AUG 23 2007

...THE SEVERE THUNDERSTORM WARNING FOR VAN BUREN...KALAMAZOO AND
ALLEGAN COUNTIES WILL BE ALLOWED TO EXPIRE...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE EXITED THE WARNED AREA.
THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 4274 8617 4235 8629 4212 8619 4211 8539
      4232 8534 4243 8557 4274 8557

$$
DUKE

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 Grand Rapids, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 23, 3:30 PM EDT, 1 hour 47 minutes earlier.

Area forecast discussion, Aug 23, 3:30 PM EDT, 1 hour 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
330 PM EDT THU AUG 23 2007

LATEST UPDATE...ALL SECTIONS BUT LONG TERM AND AVIATION...

.SYNOPSIS...(330 PM EDT THU AUG 23 2007)
ROUNDS OF SHOWERS AND THUNDERSTORMS CAN BE EXPECTED THROUGH FRIDAY
NIGHT ACROSS THE SOUTHERN GREAT LAKES REGION. A FRONTAL BOUNDARY
REMAINS DRAPED ACROSS THE AREA...WITH LOW PRESSURE CENTERS RIDING
ALONG THE FRONT. THE AREAS OF LOW PRESSURE TOUCH OFF SHOWERS AND
STORMS AS THEY MOVE THROUGH. SEVERE WEATHER IS VERY POSSIBLE THIS
AFTERNOON AND EVENING...WITH DAMAGING WINDS BEING THE MAIN THREAT.
WINDS IN EXCESS OF 65 MPH WILL BE POSSIBLE AS WELL AS HEAVY RAIN.
SKYWARN SPOTTER ACTIVATION APPEARS LIKELY.

&&

.SHORT TERM... (330 PM EDT THU AUG 23 2007)
STORMS ARE ALREADY FIRING TO THE NORTH OF GRAND RAPIDS ON WHAT
APPEARS TO BE A TAIL OF VORTICITY FROM EARLIER CONVECTION. IN
ADDITION...SEVERE THUNDERSTORMS ARE PROGRESSING ENE FROM NORTHERN
ILLINOIS. SIGNIFICANT DAMAGE/WINDS ARE NOTED IN THE LSR/S OUT OF THE
CENTRAL ILLINOIS OFFICE (CHILSRILX)...WITH ESTIMATED 100 MPH WINDS
AND SEMI TRUCKS BLOWN OVER. SIGNIFICANT WINDS...REMAIN LIKELY WITH
THE ACTIVITY THIS AFTERNOON AND EVENING...ESPECIALLY THE CONVECTION
MOVING TOWARD SOUTHWEST LOWER MICHIGAN OUT OF NORTHERN ILLINOIS.
MEAN LAYER CAPE VALUES OVER SOUTHERN LOWER MICHIGAN ARE RISING
TOWARD 2000 J/KG WITH LI/S DROPPING TO -6 C.

ADDITIONAL STORMS WILL BE POSSIBLE TONIGHT IN THE WAKE OF THIS
EVENING/S CONVECTION AS LOW LEVEL BOUNDARIES ABOUND. GFS HAS ANOTHER
850MB LLJ MAX DIRECTED AT SOUTHWEST LOWER MICHIGAN TOWARD 12Z...SO
WE COULD HAVE ANOTHER ROUND LATE.

FRIDAY AND FRIDAY NIGHT ANOTHER WAVE OF LOW PRESSURE MOVES ALONG THE
FRONT WITH ADDITIONAL SHOWERS AND THUNDERSTORMS EXPECTED. FORECAST
AREA REMAINS IN A SLIGHT RISK FOR SEVERE STORMS IN THIS TIME FRAME.

SATURDAY AND SATURDAY NIGHT SHOULD BE MUCH QUIETER...AS THE COLD
FRONT SETTLES SOUTH OF THE AREA AND ALLOWS COOLER...DRIER AIR TO
FILTER INTO THE REGION.

&&

.LONG TERM... (254 PM EDT THU AUG 23 2007)
DIDN/T MAKE WHOLESALE CHANGES TO THE GRIDS. DRY WX EXPECTED UNTIL
TUESDAY WHEN THE NEXT FRONTAL BOUNDARY MOVES THROUGH. NEAR SEASONAL
TEMPS EXPECTED.

&&

.AVIATION...(254 AM EDT THU AUG 23 2007 )
VFR CONDITIONS THIS AFTERNOON WILL CHANGE DRASTICALLY AS SEVERE
STORMS MOVE INTO THE CWA BY 23Z. MVFR/IFR CONDITIONS ARE POSSIBLE
ALONG WITH STRONG WINDS WITH THESE STORMS. OVERNIGHT...MVFR
VISIBILITIES EXPECTED WITH LINGERING SHOWERS.

&&

.MARINE... (330 PM EDT THU AUG 23 2007)
MAINTAINED THE SMALL CRAFT ADVISORY NORTH OF HOLLAND AS SOUTHWEST
WINDS INCREASE THIS EVENING. STORMS THIS EVENING WILL LOCALLY
INCREASE WIND AND WAVES AS WELL.

&&

.HYDROLOGY... (330 PM EDT THU AUG 23 2007)
ALL AREA RIVERS REMAIN HIGHER THAN NORMAL..BUT ARE FOR THE MOST PART
WELL BELOW FLOOD STAGE. ADDITIONAL HEAVY RAIN IS EXPECTED TONIGHT
THROUGH FRIDAY NIGHT. PRECIPTABLE WATER VALUES REMAIN IN EXCESS OF
2.00 INCHES INTO FRIDAY NIGHT...SO STORMS SHOULD BE EFFICIENT HEAVY
RAIN PRODUCERS. THINKING IS NOW THAT WE WILL BE ABLE TO ABSORB A
GOOD DEAL OF THE RAIN...BUT WE WILL BE MONITORING RIVER LEVELS AN
AREAL FLOODING POTENTIAL AS WELL.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
LM...SMALL CRAFT ADVISORY NEARSHORE WATERS OF LAKE MI FROM HOLLAND
TO MANISTEE FROM 8 PM TONIGHT THROUGH 10 AM FRIDAY.

&&

SYNOPSIS:   DUKE
SHORT TERM: DUKE
LONG TERM:  93
AVIATION:   93
MARINE:     DUKE
HYDROLOGY:  DUKE

Hazardous weather outlook, Aug 23, 5:06 PM EDT, 11 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED STORM AND SEICHE INFO
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
506 PM EDT THU AUG 23 2007

MIZ037>040-043>046-050>052-056>059-064>067-071>074-240830-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
506 PM EDT THU AUG 23 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...TODAY AND TONIGHT
STORMS ARE EXPECTED TO SWEEP INTO SOUTHWEST LOWER MICHIGAN FROM
SOUTHERN LAKE MICHIGAN BETWEEN 500 PM AND 600 PM. THE SQUALL LINE
WILL THEN SWEEP ACROSS AREAS ALONG AND SOUTH OF INTERSTATE 96
THROUGH 900 PM. DAMAGING WINDS ARE A SIGNIFICANT THREAT. THESE
STORMS HAVE A LONG HISTORY OF PRODUCING WIND DAMAGE ACROSS NORTHERN
ILLINOIS. WIND GUSTS IN EXCESS OF 70 MPH WILL BE POSSIBLE WITH THE
MOST INTENSE STORMS IN THE LINE. THE STORM PREDICTION CENTER
CONTINUES TO HAVE MUCH OF THE AREA IN A MODERATE RISK FOR SEVERE
WEATHER.

GIVEN A SQUALL LINE OF THIS MAGNITUDE...A SEICHE ON THE SOUTHERN END
OF LAKE MICHIGAN IS POSSIBLE. A SEICHE IS A SLOSHING OF WATER ACROSS
THE LAKE IN THE WAKE OF THE STRONG WINDS. SIGNIFICANT RISES IN WATER
LEVELS CAN OCCUR IN SHORT TIME SPANS. THIS WILL MAKE RIP CURRENTS
MORE LIKELY LATER THIS EVENING...AS WELL AS MAKING QUICK WATER LEVEL
RISES POSSIBLE.

HEAVY RAIN WILL BE A SIGNIFICANT THREAT AS WELL WITH A TROPICAL
AIRMASS IN PLACE. SOME HAIL IS POSSIBLE WITH THE STRONGEST
STORMS...BUT MUCH OF IT SHOULD REMAIN BELOW SEVERE LEVELS.

HEAT INDICES OF 95 TO 100 ARE EXPECTED THIS AFTERNOON AND EARLY
EVENING...MAINLY SOUTH OF A LINE FROM MUSKEGON TO MOUNT PLEASANT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

ADDITIONAL THUNDERSTORMS ARE EXPECTED FRIDAY AND FRIDAY NIGHT AS AN
ACTIVE FRONTAL BOUNDARY REMAINS STALLED FROM MICHIGAN SOUTHWEST TO
THE CENTRAL PLAINS. SEVERE WEATHER AND HEAVY RAINFALL WILL CONTINUE
TO BE A THREAT.

THE FRONTAL BOUNDARY WILL FINALLY MOVE SOUTHEAST OF THE AREA DURING
THE DAY SATURDAY...AND A STRETCH OF DRY WEATHER WILL FOLLOW FOR
SUNDAY THROUGH TUESDAY. THE NEXT CHANCE OF STORMS WILL RETURN
TUESDAY NIGHT AND WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE HIGHLY LIKELY LATER THIS AFTERNOON AND
EVENING.

LMZ844>849-240830-
ST JOSEPH TO SOUTH HAVEN-SOUTH HAVEN TO HOLLAND-
HOLLAND TO GRAND HAVEN-GRAND HAVEN TO WHITEHALL-
WHITEHALL TO PENTWATER-PENTWATER TO MANISTEE-
506 PM EDT THU AUG 23 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

STORMS ARE EXPECTED TO SWEEP ACROSS SOUTHERN LAKE MICHIGAN BETWEEN
500 PM AND 600 PM. THE SQUALL LINE WILL THEN SWEEP ACROSS SOUTHERN
LOWER MICHIGAN ALONG AND SOUTH OF INTERSTATE 96 THROUGH 900 PM.
DAMAGING WINDS ARE A SIGNIFICANT THREAT WITH THIS LINE OF STORMS.
THESE STORMS HAVE A LONG HISTORY OF PRODUCING WIND DAMAGE ACROSS
NORTHERN ILLINOIS. WIND GUSTS IN EXCESS OF 70 MPH WILL BE POSSIBLE
WITH THE MOST INTENSE STORMS IN THE LINE. THE STORM PREDICTION
CENTER CONTINUES TO HAVE MUCH OF THE AREA IN A MODERATE RISK FOR
SEVERE WEATHER.

GIVEN A SQUALL LINE OF THIS MAGNITUDE...A SEICHE ON THE SOUTHERN END
OF LAKE MICHIGAN IS POSSIBLE. A SEICHE IS A SLOSHING OF WATER ACROSS
THE LAKE IN THE WAKE OF THE STRONG WINDS. SIGNIFICANT RISES IN WATER
LEVELS CAN OCCUR IN SHORT TIME SPANS. THIS WILL MAKE RIP CURRENTS
MORE LIKELY LATER THIS EVENING...AS WELL AS MAKING QUICK WATER LEVEL
RISES POSSIBLE.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

ADDITIONAL THUNDERSTORMS ARE EXPECTED FRIDAY AND FRIDAY NIGHT AS AN
ACTIVE FRONTAL BOUNDARY REMAINS STALLED FROM MICHIGAN SOUTHWEST TO
THE CENTRAL PLAINS. SEVERE WEATHER AND HEAVY RAINFALL WILL CONTINUE
TO BE A THREAT.

THE FRONTAL BOUNDARY WILL FINALLY MOVE SOUTHEAST OF THE AREA DURING
THE DAY SATURDAY...AND A STRETCH OF DRY WEATHER WILL FOLLOW FOR
SUNDAY THROUGH TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE HIGHLY LIKELY LATER THIS AFTERNOON AND
EVENING.

MEADE DUKE

In the hours before

Local storm report, Aug 23, 11:51 AM EDT, 5 hours 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1151 AM EDT THU AUG 23 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0810 PM     TSTM WND DMG     DALTON                  43.32N 86.26W
08/22/2007                   MUSKEGON           MI   EMERGENCY MNGR

            FULLY GROWN OAK TREES REPORTED DOWN ON SOME HOUSES IN
            FRUITLAND AND DALTON TOWNSHIPS. SOME TREES REPORTED TO BE
            18 INCHES IN DIAMETER.

&&

BHOVING

Local storm report, Aug 23, 12:23 PM EDT, 4 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1223 PM EDT THU AUG 23 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0930 PM     HAIL             2 E BELDING             43.10N 85.19W
08/22/2007  E0.75 INCH       IONIA              MI   PUBLIC

            PENNY SIZE HAIL.

&&

BHOVING

Local storm report, Aug 23, 3:10 PM EDT, 2 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
310 PM EDT THU AUG 23 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0932 PM     TSTM WND DMG     BELDING                 43.10N 85.23W
08/22/2007                   IONIA              MI   FIRE DEPT/RESCUE

            DOZENS OF TREES REPORTED DOWN AROUND THE BELDING AREA.

&&

BHOVING

Local storm report, Aug 23, 3:58 PM EDT, 1 hour 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
358 PM EDT THU AUG 23 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0345 PM     FUNNEL CLOUD     2 W EDMORE              43.41N 85.08W
08/23/2007                   MONTCALM           MI   TRAINED SPOTTER

            SOME ROTATION WAS NOTED AROUND THE SIX LAKES AREA WEST OF
            EDMORE.

&&

BHOVING

Special weather statement, Aug 23, 4:15 PM EDT, 1 hour 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
415 PM EDT THU AUG 23 2007

MIZ052-232045-
GRATIOT-
415 PM EDT THU AUG 23 2007

...SPECIAL WEATHER STATEMENT...

AT 414 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 6 MILES NORTHWEST OF ALMA...MOVING EAST AT 35
MPH.

FUNNEL CLOUDS...WINDS GREATER THAN 40 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...ARE POSSIBLE WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH INCLUDE...ALMA AND ST. LOUIS.

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.

LAT...LON 4344 8482 4332 8480 4337 8451 4345 8455

93

Local storm report, Aug 23, 4:44 PM EDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
444 PM EDT THU AUG 23 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0401 PM     TORNADO          5 NW VESTABURG          43.45N 84.98W
08/23/2007                   MONTCALM           MI   COUNTY OFFICIAL

            CONFIRMED TORNADO TOUCHDOWN NEAR THE INTERSECTION OF
            VICTORYVILLE RD AND CUTLER. MINIMAL DAMAGE TO SHEDS WAS
            REPORTED.

&&

BHOVING

The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 22, 8:07 PM EDT	Severe Thunderstorm Warning	GRR	Muskegon	38 min
Aug 22, 8:31 PM EDT	Severe Thunderstorm Warning	GRR	Ottawa	44 min
Aug 22, 8:41 PM EDT	Severe Thunderstorm Warning	GRR	Newaygo	49 min
Aug 22, 8:50 PM EDT	Severe Thunderstorm Warning	GRR	Kent	40 min
Aug 22, 9:26 PM EDT	Severe Thunderstorm Warning	GRR	Ionia, Montcalm	64 min
Aug 22, 9:33 PM EDT	Special Weather Statement	GRR	Clinton	27 min
Aug 22, 9:48 PM EDT	Severe Thunderstorm Warning	GRR	Clinton, Gratiot	72 min
Aug 23, 1:28 AM EDT	Special Weather Statement	GRR	Van Buren	62 min
Aug 23, 2:19 AM EDT	Special Weather Statement	GRR	Kalamazoo	56 min
Aug 23, 2:56 AM EDT	Special Weather Statement	GRR	Calhoun, Jackson	64 min
Aug 23, 3:55 AM EDT	Severe Thunderstorm Warning	GRR	Jackson	35 min
Aug 23, 4:04 AM EDT	Severe Thunderstorm Warning	GRR	Ingham	41 min
Aug 23, 3:32 PM EDT	Tornado Warning	GRR	Isabella, Mecosta, Montcalm	58 min
Aug 23, 4:15 PM EDT	Special Weather Statement	GRR	Gratiot	30 min
Aug 23, 4:24 PM EDT	Severe Thunderstorm Warning	GRR	Gratiot	28 min
Aug 23, 4:30 PM EDT	Tornado Warning	GRR	Isabella	30 min
Aug 23, 4:50 PM EDT	Special Marine Warning	GRR		85 min
Aug 23, 5:57 PM EDT	Severe Thunderstorm Warning	GRR	Ottawa	69 min
Aug 23, 6:15 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Kent	60 min
Aug 23, 6:27 PM EDT	Severe Thunderstorm Warning	GRR	Calhoun, Eaton, Ionia	67 min
Aug 23, 6:53 PM EDT	Severe Thunderstorm Warning	GRR	Clinton, Ingham, Jackson	65 min
Aug 23, 7:11 PM EDT	Special Weather Statement	GRR	Gratiot, Montcalm	64 min
Aug 23, 7:31 PM EDT	Special Marine Warning	GRR		89 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2007 Every severe thunderstorm warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.