Alert archive / Michigan / Flash Flood Watches in 2015
Flash Flood Watch 1, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this flash flood watch at Jun 15, 2015, 10:43 AM EDT for 9 counties in Michigan. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Jun 15, 2015, 10:43 AM EDT (14:43 UTC)
- Expired
- Jun 15, 2015, 10:53 PM EDT
- In force
- 12 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, Jackson County, MI, Kalamazoo County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 57 km from the middle of the area, began a volume at 14:46 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, 2.7 hours before the alert went out and 143 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
- 850 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash 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 flash flood watch went out at Jun 14, 7:54 PM EDT, 14 hours 49 minutes earlier.
Area forecast discussion, Jun 14, 7:54 PM EDT, 14 hours 49 minutes before
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</html>Hazardous weather outlook, Jun 14, 12:33 PM EDT, 22 hours 10 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 |
|---|---|---|---|---|
| Jun 14, 9:28 PM EDT | River Flood Advisory | GRR | Calhoun | 24 hr |
| Jun 14, 9:44 PM EDT | River Flood Advisory | GRR | Kent | 70 hr |
| Jun 15, 12:10 AM EDT | River Flood Advisory | GRR | Clinton | 50 hr |
| Jun 15, 6:24 AM EDT | Dense Fog Advisory | GRR | Allegan, Barry, Clare, Clinton, Eaton, Gratiot and 13 more | 3 hr |
| Jun 15, 12:52 PM EDT | Areal Flood Advisory | GRR | Calhoun, Kalamazoo, Van Buren | 12 hr |
| Jun 15, 12:59 PM EDT | Special Weather Statement | GRR | Calhoun | 61 min |
| Jun 15, 1:27 PM EDT | River Flood Advisory | GRR | Newaygo | 19 hr |
| Jun 15, 4:22 PM EDT | River Flood Advisory | GRR | Muskegon | 34 hr |
Nearby
Flash Flood Watches in Michigan, 2015Every flash flood watch in 2015
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.