Alert archive / Michigan / Flood Watches in 2018
Flood Watch 3, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this flood watch at Aug 28, 2018, 10:59 AM EDT for 23 counties in Michigan. It took effect at Aug 28, 2018, 6:00 PM EDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Aug 28, 2018, 10:59 AM EDT (14:59 UTC)
- In effect from
- Aug 28, 2018, 6:00 PM EDT
- Expired
- Aug 29, 2018, 2:43 AM EDT
- In force
- 9 hr
- Issued by
- NWS Grand Rapids, MI
- Flood severity
- None
All 23 counties
Allegan County, MI, Barry County, MI, Calhoun County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Gratiot County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lake County, MI, Mason County, MI, Mecosta County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Osceola County, MI, Ottawa County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 27 km from the middle of the area, began a volume at 15:01 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, 3.0 hours before the alert went out and 165 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
- 497 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 672 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.7
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 28, 7:55 AM EDT, 3 hours 4 minutes earlier.
Area forecast discussion, Aug 28, 7:55 AM EDT, 3 hours 4 minutes before
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</html>Hazardous weather outlook, Aug 28, 5:26 AM EDT, 5 hours 33 minutes before
Hazardous Weather Outlook National Weather Service Grand Rapids MI 526 AM EDT Tue Aug 28 2018 MIZ037>040-043>046-050>052-056>059-064>067-071>074-290930- Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon- Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton- Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- 526 AM EDT Tue Aug 28 2018 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...Today and Tonight Thunderstorms north of a Saugatuck to Lansing line will weaken this morning, but may produce locally heavy rain through 10 am. Severe thunderstorms with damaging winds and torrential rainfall are possible this afternoon and tonight. A flooding threat exists, especially if storms repeat over areas already impacted by heavy rain. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Thunderstorms are possible Wednesday, mainly in the morning. Severe weather and heavy rain are not expected, although areas of flooding may linger. After dry weather on Thursday and Friday, thunderstorms are possible again over Labor Day weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and tonight. LMZ844>849-290930- 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- 526 AM EDT Tue Aug 28 2018 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...Today and Tonight Winds and waves will remain hazardous to small craft, swimmers, and anyone venturing out on piers today. Thunderstorms north of Saugatuck will weaken this morning, but may produce erratic gusty winds to 35 knots and dangerous lightning through 10 am. Additional storms are expected over all of Lake Michigan this afternoon and tonight. Some of these storms could produce winds to 50 knots. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Hazardous winds and waves are possible on Wednesday, but the wind will be northerly rather than southerly. Thunderstorms are possible Wednesday morning but are not expected to be severe. After dry weather on Thursday and Friday, thunderstorms are possible again over Labor Day weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and tonight. Meade
In the hours before
Local storm report, Aug 28, 6:27 AM EDT, 4 hours 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
627 AM EDT TUE AUG 28 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0130 AM TSTM WND GST LUDINGTON BUOY 44.00N 86.60W
08/28/2018 M54 MPH LMZ868 MI BUOY
BUOY STATION 45024, LUDINGTON BUOY.
0255 AM TSTM WND GST BIG RAPIDS ROBEN-HOOD A 43.72N 85.50W
08/28/2018 M46 MPH MECOSTA MI AWOS
AWOS STATION RQB, BIG RAPIDS ROBEN-HOOD
ARPT.
0410 AM TSTM WND GST 1 W GRAND HAVEN 43.06N 86.26W
08/28/2018 M43 MPH LMZ846 MI MESONET
MESONET STATION XGHL, 1 W GRAND HAVEN.
1159 PM TSTM WND GST 4 SSE HART 43.64N 86.33W
08/27/2018 M42 MPH OCEANA MI MESONET
MESONET STATION AU347, 4 SSE HART.
0415 AM TSTM WND GST W MICH REGIONAL ARPT 42.74N 86.11W
08/28/2018 M41 MPH ALLEGAN MI ASOS
ASOS STATION BIV, W MICH REGIONAL ARPT.
0147 AM TSTM WND GST 2 W SCOTTVILLE 43.96N 86.34W
08/28/2018 M41 MPH MASON MI MESONET
MESONET STATION MC016, 2 W SCOTTVILLE.
0355 AM TSTM WND GST MT PLEASANT MUNI ARPT 43.62N 84.74W
08/28/2018 M41 MPH ISABELLA MI AWOS
AWOS STATION MOP, MT PLEASANT MUNI ARPT.
0440 AM TSTM WND GST PORT SHELDON BUOY 42.90N 86.30W
08/28/2018 M40 MPH LMZ874 MI BUOY
BUOY STATION 45029, PORT SHELDON BUOY.
0238 AM TSTM WND GST FREMONT MUNICIPAL ARPT 43.44N 85.99W
08/28/2018 M38 MPH NEWAYGO MI AWOS
AWOS STATION FFX, FREMONT MUNICIPAL ARPT.
0135 AM TSTM WND GST MASON CO APT 43.97N 86.42W
08/28/2018 M37 MPH MASON MI AWOS
AWOS STATION LDM, MASON CO APT.
0150 AM TSTM WND GST 3 ENE PENTWATER 43.81N 86.38W
08/28/2018 M35 MPH OCEANA MI MESONET
MESONET STATION E6978, 3 ENE PENTWATER.
&&Local storm report, Aug 28, 6:56 AM EDT, 4 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
656 AM EDT TUE AUG 28 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0646 AM HEAVY RAIN TWIN LAKE 43.37N 86.18W
08/28/2018 M1.93 INCH MUSKEGON MI MESONET
STATION KMITWINL8. THE 36 HOUR RAIN TOTAL IS
8.35 INCHES.
0656 AM HEAVY RAIN 3 ENE MUSKEGON 43.24N 86.20W
08/28/2018 M1.81 INCH MUSKEGON MI MESONET
STATION KMIMUSKE38.
0650 AM HEAVY RAIN 1 E TWIN LAKE 43.37N 86.16W
08/28/2018 M1.81 INCH MUSKEGON MI MESONET
STATION KMITWINL10. THE 36 HOUR RAIN TOTAL
IS 8.12 INCHES.
0645 AM HEAVY RAIN 3 NNE MONTAGUE 43.45N 86.35W
08/28/2018 M1.76 INCH MUSKEGON MI MESONET
STATION KMIMONTA10.
0641 AM HEAVY RAIN 5 SSE STONY LAKE 43.49N 86.46W
08/28/2018 M1.70 INCH OCEANA MI MESONET
STATION KMIMONTA8.
0653 AM HEAVY RAIN 1 WNW ROOSEVELT PARK 43.20N 86.30W
08/28/2018 M1.68 INCH MUSKEGON MI MESONET
STATION KMIMUSKE45. THE 36 HOUR RAINFALL IS
4.82 INCHES.
0639 AM HEAVY RAIN NEW ERA 43.56N 86.34W
08/28/2018 M1.60 INCH OCEANA MI MESONET
STATION KMINEWER4.
0637 AM HEAVY RAIN 4 WNW MEARS 43.70N 86.51W
08/28/2018 M1.56 INCH OCEANA MI MESONET
STATION KMIMEARS5.
0638 AM HEAVY RAIN 3 NNW STONY LAKE 43.59N 86.53W
08/28/2018 M1.50 INCH OCEANA MI MESONET
STATION KMISHELB33.
0651 AM HEAVY RAIN 2 N MUSKEGON 43.26N 86.26W
08/28/2018 M1.50 INCH MUSKEGON MI MESONET
STATION KMINORTH13. THE 36 HOUR RAINFALL IS
7.53 INCHES.
0645 AM HEAVY RAIN 1 NNW 5 SW WHITEHALL 43.38N 86.43W
08/28/2018 M1.30 INCH MUSKEGON MI MESONET
STATION KMIMONTA7.
0646 AM HEAVY RAIN 1 NNE MONTAGUE 43.42N 86.36W
08/28/2018 M1.13 INCH MUSKEGON MI MESONET
STATION KMIMONTA1.
&&Local storm report, Aug 28, 7:34 AM EDT, 3 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
734 AM EDT TUE AUG 28 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0716 AM HEAVY RAIN GRANDVILLE 42.91N 85.76W
08/28/2018 M1.58 INCH KENT MI MESONET
MESONET STATION D6683, GRANDVILLE.
&&Local storm report, Aug 28, 7:49 AM EDT, 3 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
749 AM EDT TUE AUG 28 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0745 AM HEAVY RAIN 1 NNW COMSTOCK PARK 43.06N 85.68W
08/28/2018 M2.05 INCH KENT MI MESONET
STATION KMICOMST8.
0738 AM HEAVY RAIN 1 WNW FREMONT 43.47N 85.97W
08/28/2018 M1.74 INCH NEWAYGO MI MESONET
STATION KMIFREMO7.
0742 AM HEAVY RAIN 2 S BELMONT 43.05N 85.61W
08/28/2018 M1.73 INCH KENT MI MESONET
STATION KMIGRAND228.
0741 AM HEAVY RAIN 1 SSW ROCKFORD 43.12N 85.56W
08/28/2018 M1.25 INCH KENT MI MESONET
STATION KMIROCKF23.
0738 AM HEAVY RAIN 2 SSW CEDAR SPRINGS 43.19N 85.57W
08/28/2018 M1.02 INCH KENT MI MESONET
STATION KMICEDAR38.
&&Local storm report, Aug 28, 8:10 AM EDT, 2 hours 49 minutes before
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</html>Local storm report, Aug 28, 8:54 AM EDT, 2 hours 5 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 28, 12:35 AM EDT | Special Marine Warning | GRR | 55 min | |
| Aug 28, 12:54 AM EDT | Severe Thunderstorm Warning | GRR | Mason | 66 min |
| Aug 28, 1:50 AM EDT | Special Weather Statement | GRR | Lake | 85 min |
| Aug 28, 1:52 AM EDT | Special Weather Statement | GRR | Oceana | 83 min |
| Aug 28, 2:24 AM EDT | Special Weather Statement | GRR | Osceola | 66 min |
| Aug 28, 3:51 AM EDT | Areal Flood Advisory | GRR | Muskegon, Oceana | 6 hr |
| Aug 28, 6:07 PM EDT | Special Marine Warning | GRR | 83 min | |
| Aug 28, 6:23 PM EDT | Special Weather Statement | GRR | Allegan | 52 min |
| Aug 28, 6:34 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Ottawa | 41 min |
| Aug 28, 6:42 PM EDT | Severe Thunderstorm Warning | GRR | Mason, Muskegon, Oceana | 63 min |
| Aug 28, 6:48 PM EDT | Special Marine Warning | GRR | 57 min | |
| Aug 28, 7:06 PM EDT | Severe Thunderstorm Warning | GRR | Kent | 39 min |
| Aug 28, 7:14 PM EDT | Severe Thunderstorm Warning | GRR | Lake, Mecosta, Newaygo, Osceola | 61 min |
| Aug 28, 7:26 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Ottawa | 49 min |
| Aug 28, 7:54 PM EDT | Severe Thunderstorm Warning | GRR | Clare, Isabella | 66 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.