Alert archive / Michigan / Special Weather Statements in 2017
Special Weather Statement, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this special weather statement at Jul 12, 2017, 6:07 AM EDT for Allegan County, Kalamazoo County, Van Buren County, Michigan. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 12, 2017, 6:07 AM EDT (10:07 UTC)
- Expired
- Jul 12, 2017, 7:00 AM EDT
- In force
- 53 min
- Issued by
- NWS Grand Rapids, MI
Counties Allegan County, MI, Kalamazoo County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 79 km from the middle of the area, began a volume at 10:10 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 nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 10.1 hours before the alert went out and 301 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
- 643 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1366 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.2
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jul 12, 3:34 AM EDT, 2 hours 33 minutes earlier.
Area forecast discussion, Jul 12, 3:34 AM EDT, 2 hours 33 minutes before
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</html>Hazardous weather outlook, Jul 12, 3:55 AM EDT, 2 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK National Weather Service Grand Rapids MI 355 AM EDT Wed Jul 12 2017 MIZ037>040-043>046-050>052-056>059-064>067-071>074-130800- Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon- Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton- Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- 355 AM EDT Wed Jul 12 2017 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...Today and Tonight Near and south of I-96, till 8 am, expect periods of thunderstorms with locally very heavy rain, gusty winds,frequent cloud to ground lighting, and small hail. At this time it would seem the threat for severe storms is very low through mid morning across Southwest Michigan. The thunderstorm from mid morning into early this afternoon will have heavy rain, frequent lighting, small hail and gusty winds but for the most part these storms also are not expected to be severe. There is significant risk for severe thunderstorms from mid afternoon into tonight. Damaging winds, large hail, isolated tornadoes, and locally heavy rainfall are all possible with these storms. At this point any location in Southwest Michigan would have that threat. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Thunderstorms are possible over eastern areas Thursday and again Saturday night into Sunday. .SPOTTER INFORMATION STATEMENT... Spotter should be ready to look for severe storms this afternoon and this evening. If you then see severe weather please report it to our office. LMZ844>849-130800- 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- 355 AM EDT Wed Jul 12 2017 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...Today and Tonight There will be periods of thunderstorms with locally strong winds, frequent cloud to water lighting, and hail are expected through tonight. Winds and waves may be significantly higher near the stronger thunderstorms. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Thunderstorms are a threat again Saturday night into Sunday. .SPOTTER INFORMATION STATEMENT... Spotter should be ready to look for severe storms this afternoon and this evening. If you then see severe weather please report it to our office. wdm
In the hours before
Special weather statement, Jul 12, 1:59 AM EDT, 4 hours 8 minutes before
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</html>Special weather statement, Jul 12, 6:07 AM EDT, 0 minutes before
Special Weather Statement
National Weather Service Grand Rapids MI
607 AM EDT WED JUL 12 2017
MIZ064-065-071-072-121100-
Kalamazoo MI-Allegan MI-Van Buren MI-Barry MI-
607 AM EDT WED JUL 12 2017
...SIGNIFICANT WEATHER ADVISORY...
At 607 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Van Buren SP to near McDonald to near
Magician Lake. Movement was northeast at 45 mph.
Winds in excess of 40 mph with downed tree limbs will be possible
with these storms.
Locations impacted include...
Kalamazoo... Portage... Allegan...
South Haven... Plainwell... Paw Paw...
Westwood... Van Buren SP... Otsego...
Vicksburg... Hartford... Galesburg...
Mattawan... Lawton... Bangor...
Decatur... Schoolcraft... Climax...
Richland... Martin...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4207 8620 4213 8623 4224 8622 4226 8635
4244 8626 4264 8577 4250 8540 4219 8530
4207 8580
TIME...MOT...LOC 1007Z 245DEG 39KT 4232 8639 4225 8619 4208 8613
NJJThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 1:09 AM EDT | Flood Watch | GRR | Allegan, Barry, Calhoun, Clinton, Eaton, Ingham and 6 more | 29 hr |
| Jul 12, 1:59 AM EDT | Special Weather Statement | GRR | Allegan, Van Buren | 31 min |
| Jul 12, 8:42 AM EDT | Special Marine Warning | GRR | 2 hr | |
| Jul 12, 9:03 AM EDT | Special Marine Warning | GRR | 87 min | |
| Jul 12, 9:14 AM EDT | Special Weather Statement | GRR | Mason, Oceana | 91 min |
| Jul 12, 9:22 AM EDT | Special Weather Statement | GRR | Allegan, Van Buren | 83 min |
| Jul 12, 9:59 AM EDT | Severe Thunderstorm Warning | GRR | Allegan | 18 min |
| Jul 12, 10:23 AM EDT | Special Marine Warning | GRR | 112 min | |
| Jul 12, 11:09 AM EDT | Special Weather Statement | GRR | Ingham | 51 min |
| Jul 12, 11:17 AM EDT | Special Weather Statement | GRR | Allegan, Van Buren | 58 min |
| Jul 12, 11:22 AM EDT | Areal Flood Advisory | GRR | Ingham | 6 hr |
| Jul 12, 11:45 AM EDT | Special Weather Statement | GRR | Jackson | 90 min |
| Jul 12, 12:13 PM EDT | Special Weather Statement | GRR | Calhoun, Kalamazoo | 92 min |
Nearby
Special Weather Statements in Michigan, 2017Every special weather statement in 2017
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.