Alert archive / Michigan / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 41, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Jul 15, 2010, 3:16 PM EDT for Clinton County, Gratiot County, Michigan. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 15, 2010, 3:16 PM EDT (19:16 UTC)
- Expired
- Jul 15, 2010, 4:00 PM EDT
- In force
- 44 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Clinton County, MI, Gratiot County, MI
The radar
The Grand Rapids radar (KGRR), 81 km from the middle of the area, began a volume at 19:18 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 15, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 7.3 hours before the alert went out and 105 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.
- Mixed-layer CAPE
- 115 J/kg
- Mixed-layer CIN
- -137 J/kg
- Mixed-layer LCL
- 1003 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jul 15, 2:04 PM EDT, 1 hour 12 minutes earlier.
Area forecast discussion, Jul 15, 2:04 PM EDT, 1 hour 12 minutes before
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</html>Hazardous weather outlook, Jul 15, 1:05 PM EDT, 2 hours 11 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 105 PM EDT THU JUL 15 2010 MIZ037>040-043>046-050>052-056>059-064>067-071>074-161100- MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON- MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON- INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON- 105 PM EDT THU JUL 15 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT A SLIGHT RISK OF SEVERE WEATHER EXISTS THIS AFTERNOON AND EARLY EVENING SOUTH AND EAST OF A MUSKEGON TO CADILLAC LINE. THE MAIN THREATS ARE STRONG DAMAGING WINDS IN EXCESS OF 60 MPH AND TORRENTIAL RAIN WITH LOCALIZED ONE TO TWO INCH PER HOUR RAINFALL RATES. CELL MOVEMENT WILL BE EAST NORTHEAST AT AROUND 40 MPH. HEAT INDEX VALUES WILL PUSH TOWARD 100 DEGREES THIS AFTERNOON ACROSS SOUTHERN LOWER MICHIGAN. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS CHANCE OF THUNDERSTORMS ON SUNDAY AND SUNDAY NIGHT. SOME OF THESE STORMS MAY BE SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED FROM 2 PM TO 9 PM... ESPECIALLY EAST OF HIGHWAY 131. LMZ844>849-161100- 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- 105 PM EDT THU JUL 15 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT STRONG TO SEVERE STORMS ARE EXPECTED TODAY...WITH THE HIGHEST THREAT BEING SOUTH OF WHITEHALL. STORMS WILL BE CAPABLE OF STRONG WINDS IN EXCESS OF 50 KNOTS...TORRENTIAL RAINS AND CLOUD TO WATER LIGHTNING STRIKES. A VERY HUMID AIR MASS WILL LEAD TO AREAS OF FOG AND HAZE ON LAKE MICHIGAN WHICH MAY REDUCE VISIBILITIES TO BELOW A MILE. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS CHANCE OF THUNDERSTORMS ON SUNDAY AND SUNDAY NIGHT. SOME OF THESE STORMS MAY BE SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FROM 2 PM TO 6 PM. DUKE/MEADE
In the hours before
Special weather statement, Jul 15, 9:53 AM EDT, 5 hours 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
953 AM EDT THU JUL 15 2010
MIZ044-045-051-151500-
MECOSTA-MONTCALM-NEWAYGO-
953 AM EDT THU JUL 15 2010
...SIGNIFICANT WEATHER ADVISORY...
AT 949 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 10 MILES SOUTHWEST
OF BIG RAPIDS TO 4 MILES EAST OF NEWAYGO TO 12 MILES SOUTHWEST OF
NEWAYGO...MOVING EAST AT 40 MPH.
WINDS GREATER THAN 40 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...
BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
ASHLAND TWP... BIG RAPIDS... GRANT...
STANWOOD... COLFAX TWP... RODNEY...
MORLEY... ENSLEY TWP... CHIPPEWA LAKE...
ALTONA... MECOSTA... BARRYTON...
CORAL... HOWARD CITY... AMBLE...
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 THESE STORMS HAVE PASSED.
&&
LAT...LON 4381 8511 4360 8510 4336 8511 4331 8604
4342 8592 4364 8568
TIME...MOT...LOC 1353Z 252DEG 36KT 4362 8558 4341 8567
4333 8595
NJJLocal storm report, Jul 15, 11:46 AM EDT, 3 hours 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1146 AM EDT THU JUL 15 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1146 AM HEAVY RAIN MONTAGUE 43.41N 86.36W
07/15/2010 M1.55 INCH MUSKEGON MI CO-OP OBSERVER
24 HOUR TOTAL.
&&
OSTUNOSpecial weather statement, Jul 15, 12:43 PM EDT, 2 hours 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1243 PM EDT THU JUL 15 2010
MIZ039-040-151745-
CLARE-OSCEOLA-
1243 PM EDT THU JUL 15 2010
...SIGNIFICANT WEATHER ADVISORY...
AT 1240 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 25 MILES WEST OF HARRISON...MOVING EAST AT 40
MPH.
ONE HALF INCH DIAMETER HAIL...WINDS GREATER THAN 40 MPH...FREQUENT
CLOUD TO GROUND LIGHTNING...ARE POSSIBLE WITH THIS STORM.
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.
&&
LAT...LON 4417 8460 4402 8461 4389 8543 4402 8549
4418 8494 4417 8493
TIME...MOT...LOC 1643Z 252DEG 36KT 4398 8535
OSTUNOSpecial weather statement, Jul 15, 2:21 PM EDT, 55 minutes before
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</html>Local storm report, Jul 15, 2:48 PM EDT, 28 minutes before
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</html>The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 10:31 PM EDT | Special Marine Warning | GRR | 104 min | |
| Jul 15, 2:13 AM EDT | Special Marine Warning | GRR | 107 min | |
| Jul 15, 4:02 AM EDT | Special Marine Warning | GRR | 88 min | |
| Jul 15, 4:44 AM EDT | Special Weather Statement | GRR | Allegan, Ottawa | 61 min |
| Jul 15, 9:07 AM EDT | Special Weather Statement | GRR | Muskegon | 53 min |
| Jul 15, 9:53 AM EDT | Special Weather Statement | GRR | Mecosta | 67 min |
| Jul 15, 12:43 PM EDT | Special Weather Statement | GRR | Clare, Osceola | 62 min |
| Jul 15, 2:21 PM EDT | Special Weather Statement | GRR | Gratiot | 54 min |
| Jul 15, 2:49 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 25 min |
| Jul 15, 3:42 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 35 min |
| Jul 15, 3:49 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 41 min |
| Jul 15, 3:56 PM EDT | Special Weather Statement | GRR | Clinton | 64 min |
| Jul 15, 4:08 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Kalamazoo | 52 min |
| Jul 15, 4:26 PM EDT | Special Weather Statement | GRR | Ingham | 64 min |
| Jul 15, 4:29 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Jackson, Kalamazoo | 46 min |
| Jul 15, 4:34 PM EDT | Areal Flood Advisory | GRR | Calhoun, Jackson | 6 hr |
| Jul 15, 5:00 PM EDT | Flash Flood Warning | GRR | Calhoun, Ingham, Jackson | 6 hr |
| Jul 15, 5:16 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Ingham, Jackson | 44 min |
| Jul 15, 6:18 PM EDT | Special Weather Statement | GRR | Kalamazoo | 57 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2010Every severe thunderstorm warning in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.