Alert archive / Michigan / Flood Watches in 2016
Flood Watch 1, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this flood watch at Aug 12, 2016, 3:40 PM EDT for 12 counties in Michigan. It took effect at Aug 12, 2016, 4:00 PM EDT. It was in force for 16 hr.
The area
The counties it named.
The facts
- Issued
- Aug 12, 2016, 3:40 PM EDT (19:40 UTC)
- In effect from
- Aug 12, 2016, 4:00 PM EDT
- Expired
- Aug 13, 2016, 8:00 AM EDT
- In force
- 16 hr
- Issued by
- NWS Grand Rapids, MI
- Flood severity
- None
Counties Allegan County, MI, Barry County, MI, Calhoun County, MI, Clinton County, MI, Eaton County, MI, Ingham County, MI, Ionia County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Ottawa County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 40 km from the middle of the area, began a volume at 19:40 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
Detroit, MI (KDTX), launched 12:00Z, 7.7 hours before the alert went out and 150 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
- 1934 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 603 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- -1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flood watch 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 flood watch went out at Aug 12, 3:26 PM EDT, 14 minutes earlier.
Area forecast discussion, Aug 12, 3:26 PM EDT, 14 minutes before
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</html>Hazardous weather outlook, Aug 12, 3:54 AM EDT, 11 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 354 AM EDT FRI AUG 12 2016 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- 354 AM EDT FRI AUG 12 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT RAIN WILL BE HEAVY AT TIMES THROUGH TONIGHT. AN ELEVATED RISK FOR FLOODING EXISTS. URBAN AND POOR DRAINAGE AREAS LOOK MOST PRONE. IF THE THUNDERSTORMS REPEAT OVER THE SAME AREA...SMALLER STREAMS AND RIVERS COULD SEE FLOODING AS WELL. A MARGINAL RISK FOR SEVERE WEATHER EXISTS...MAINLY ALONG AND SOUTH OF A MUSKEGON TO LANSING LINE. DAMAGING WINDS ARE THE PRIMARY RISKS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THE HEAVY RAIN COULD PERSIST INTO EARLY SATURDAY MORNING WITH FLOODING POSSIBLE. NON SEVERE THUNDERSTORMS ARE POSSIBLE TUESDAY INTO THURSDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED INTO TONIGHT. 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- 354 AM EDT FRI AUG 12 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS COULD CONTAIN GUSTY WINDS AND FREQUENT CLOUD TO WATER LIGHTNING STRIKES. WAVES COULD BE LOCALLY HIGHER NEAR AND THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NON SEVERE THUNDERSTORMS ARE POSSIBLE TUESDAY INTO THURSDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED INTO TONIGHT.
In the hours before
Local storm report, Aug 12, 10:18 AM EDT, 5 hours 22 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1018 AM EDT FRI AUG 12 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0630 AM HEAVY RAIN 1 W SHELBYVILLE 42.59N 85.66W
08/12/2016 E1.30 INCH ALLEGAN MI PUBLIC
VIA SOCIAL MEDIA. RADAR SUGGESTS THIS IS A 2
HOUR TOTAL BETWEEN 430 AM AND 630 AM.
0645 AM HEAVY RAIN FREEPORT 42.76N 85.31W
08/12/2016 E1.20 INCH BARRY MI BROADCAST MEDIA
VIEWER REPORT. FELL BETWEEN 245 AND 645 AM
ACCORDING TO RADAR .
0647 AM HEAVY RAIN 1 NE IRVING 42.70N 85.40W
08/12/2016 M2.38 INCH BARRY MI MESONET
3 HOUR TOTAL. 1.15 INCHES WAS RECORDED IN 1
HOUR. CWOP STATION 1 ENE IRVING /D3807/.
0650 AM HEAVY RAIN 2 WNW BRADLEY 42.64N 85.68W
08/12/2016 M1.08 INCH ALLEGAN MI MESONET
3 HOUR TOTAL. CWOP STATION 2 WNW BRADLEY
/C5467/.
0700 AM HEAVY RAIN 2 W WAYLAND 42.67N 85.68W
08/12/2016 M1.61 INCH ALLEGAN MI COCORAHS
24 HOUR TOTAL. RADAR SUGGESTS MAJORITY FELL
IN 3 HOURS BETWEEN 330 AM AND 630 AM.
COCORAHS STATION 1 W WAYLAND /MI-AN-1/.
0700 AM HEAVY RAIN 1 NNE SHELBYVILLE 42.61N 85.63W
08/12/2016 M1.22 INCH ALLEGAN MI COCORAHS
24 HOUR TOTAL. RADAR SUGGESTS MAJORITY FELL
IN 3 HOURS BETWEEN 330 AM AND 630 AM.
COCORAHS STATION 1 NE SHELBYVILLE
/MI-AN-18/.
0700 AM HEAVY RAIN 1 NNE HOPKINS 42.64N 85.76W
08/12/2016 M1.14 INCH ALLEGAN MI CO-OP OBSERVER
24 HOUR TOTAL. RADAR CONFIRMS THE RAIN FELL
IN ABOUT 3 HOURS ENDING AT 630 AM EDT. CO-OP
OBSERVER STATION HOPKINS 1 N /HPKM4/.
0730 AM HEAVY RAIN 1 ENE CASTLE PARK 42.76N 86.18W
08/12/2016 M1.24 INCH ALLEGAN MI COCORAHS
24 HOUR TOTAL. RADAR SUGGESTS MAJORITY FELL
IN 4 HOURS BETWEEN 3 AM AND 7 AM. COCORAHS
STATION 1 ENE CASTLE PARK /MI-AN-16/.
0800 AM HEAVY RAIN 5 ENE SAUGATUCK 42.68N 86.11W
08/12/2016 M1.08 INCH ALLEGAN MI COCORAHS
24 HOUR TOTAL. RADAR SUGGESTS IT ALL FELL
WITHIN 5 HOURS BETWEEN 2 AM AND 7 AM.
COCORAHS STATION 5 ENE SAUGATUCK /MI-AN-23/.
&&
CASSpecial weather statement, Aug 12, 1:24 PM EDT, 2 hours 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
124 PM EDT FRI AUG 12 2016
MIZ056-064-071-121815-
VAN BUREN MI-ALLEGAN MI-OTTAWA MI-
124 PM EDT FRI AUG 12 2016
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN OTTAWA...WESTERN ALLEGAN
AND WESTERN VAN BUREN COUNTIES UNTIL 215 PM EDT...
AT 122 PM EDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS
ALONG A LINE EXTENDING FROM 13 MILES WEST OF HOLLAND TO 16 MILES
WEST OF SAINT JOSEPH. MOVEMENT WAS EAST AT 20 MPH.
WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH THESE STORMS ALONG
WITH CLOUD TO GROUND LIGHTNING STRIKES. TORRENTIAL DOWNPOURS MAY
LEAD TO TEMPORARY FLOODING SEVERAL INCHES DEEP ON SOME ROADWAYS.
LOCATIONS IMPACTED INCLUDE...
HOLLAND... SOUTH HAVEN... VAN BUREN SP...
HUDSONVILLE... ZEELAND... HARTFORD...
BANGOR... FENNVILLE... SAUGATUCK...
SAUGATUCK SP... BEECHWOOD... JENISON...
COVERT... GANGES... KEELER...
HAMILTON... DOUGLAS... LAWRENCE...
BLOOMINGDALE... BREEDSVILLE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 4207 8622 4224 8622 4224 8636 4249 8625
4271 8621 4288 8621 4289 8579 4207 8604
TIME...MOT...LOC 1719Z 272DEG 17KT 4281 8647 4214 8682
CASLocal storm report, Aug 12, 3:17 PM EDT, 23 minutes before
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</html>Local storm report, Aug 12, 3:33 PM EDT, 7 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 |
|---|---|---|---|---|
| Aug 12, 1:24 PM EDT | Special Weather Statement | GRR | Allegan, Van Buren | 51 min |
| Aug 12, 2:12 PM EDT | Severe Thunderstorm Warning | GRR | Allegan | 45 min |
| Aug 12, 2:17 PM EDT | Tornado Warning | GRR | Allegan | 28 min |
Nearby
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.