Alert archive / Michigan / Flood Watches in 2018
Flood Watch 1, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this flood watch at Feb 18, 2018, 3:02 PM EST for 23 counties in Michigan. It took effect at Feb 19, 2018, 12:00 PM EST. It was in force for 24 hr.
The area
The counties it named.
The facts
- Issued
- Feb 18, 2018, 3:02 PM EST (20:02 UTC)
- In effect from
- Feb 19, 2018, 12:00 PM EST
- Expired
- Feb 20, 2018, 11:40 AM EST
- In force
- 24 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 20:03 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 12:00Z, 8.0 hours before the alert went out and 266 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1277 m above ground
- 0-6 km bulk shear
- 84 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 214 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 Feb 18, 1:05 PM EST, 1 hour 57 minutes earlier.
Area forecast discussion, Feb 18, 1:05 PM EST, 1 hour 57 minutes before
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</html>Hazardous weather outlook, Feb 18, 11:12 AM EST, 3 hours 50 minutes before
HAZARDOUS WEATHER OUTLOOK National Weather Service Grand Rapids MI 1112 AM EST Sun Feb 18 2018 MIZ037>040-043>046-050>052-056>059-064>067-071>074-191000- Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon- Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton- Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- 1112 AM EST Sun Feb 18 2018 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday Several rounds of heavy rain are forecasted Monday through Tuesday Night. Water levels will likely be elevated ahead of the rain due to the ongoing snow melt. There will likely still be some ice in the rivers. All this will support an increased risk for flooding for much of the week. Thunderstorms will be possible Monday afternoon into Tuesday night. Any stronger storm could contain gusty winds. Wind gusts may top 40 mph mainly Tuesday afternoon or evening. This could lead to scattered power outages. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. MJS NJJ
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 12:57 PM EST | River Flood Warning | GRR | Kent | 14 days |
| Feb 18, 12:57 PM EST | River Flood Warning | GRR | Ottawa | 13 days |
| Feb 18, 12:57 PM EST | River Flood Warning | GRR | Ingham | 7 days |
| Feb 18, 12:57 PM EST | River Flood Warning | GRR | Ingham | 8 days |
| Feb 18, 12:57 PM EST | River Flood Warning | GRR | Clinton | 15 days |
| Feb 18, 12:57 PM EST | River Flood Warning | GRR | Clinton | 11 days |
| Feb 18, 12:57 PM EST | River Flood Warning | GRR | Kalamazoo | 9 days |
| Feb 18, 1:18 PM EST | River Flood Advisory | GRR | Ionia | 24 hr |
| Feb 18, 1:18 PM EST | River Flood Advisory | GRR | Kent | 24 hr |
| Feb 18, 1:18 PM EST | River Flood Advisory | GRR | Kent | 24 hr |
| Feb 18, 1:18 PM EST | River Flood Advisory | GRR | Ionia | 10 days |
| Feb 18, 1:18 PM EST | River Flood Advisory | GRR | Barry | 24 hr |
| Feb 18, 1:18 PM EST | River Flood Advisory | GRR | Kent | 6 days |
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.