Alert archive / Michigan / Flash Flood Warnings in 1997
Flash Flood Warning 3, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this flash flood warning at Feb 21, 1997, 8:25 AM EST for Muskegon County, Oceana County, Michigan. It was in force for 14 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 21, 1997, 8:25 AM EST (13:25 UTC)
- Expired
- Feb 21, 1997, 10:00 PM EST
- In force
- 14 hr
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
Counties Muskegon County, MI, Oceana County, MI
The radar
The Grand Rapids radar (KGRR), 85 km from the middle of the area, began a volume at 13:28 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, 1.4 hours before the alert went out and 186 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
- 518 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- -85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KGRR 211325 FFWGRR MIC073-037-045-057-065-005-015-021-027-067-077-081-117-139-159- 107-121-123-127-220300- BULLETIN - EAS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE GRAND RAPIDS MI 825 AM EST FRI FEB 21 1
What forecasters said that day
The local office's own words before this flash flood warning 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 warning went out at Feb 21, 2:26 AM EST, 5 hours 59 minutes earlier.
Area forecast discussion, Feb 21, 2:26 AM EST, 5 hours 59 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 224 AM EST FRI FEB 21 1997 ...UPDATE TO LOWER TEMPS FRM NW OF LAN TO BEH... COLD FRONT CONTINUES TO PUSH SLWLY SE... SO WILL LWR OVERNIdGHT TMPS SINCE FRONT NOT EXPECTED TO PUSH BACK NWD OVRNIGHT. WDM
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 8:25 AM EST | Flash Flood Warning | GRR | Allegan, Barry, Kalamazoo, Kent, Ottawa, Van Buren | 14 hr |
| Feb 21, 8:25 AM EST | Flash Flood Warning | GRR | Isabella, Mecosta, Montcalm, Newaygo | 14 hr |
| Feb 21, 8:25 AM EST | Flash Flood Warning | GRR | Clinton, Eaton, Gratiot, Ingham, Ionia | 14 hr |
| Feb 21, 8:25 AM EST | Flash Flood Warning | GRR | Berrien, Cass | 14 hr |
| Feb 21, 10:15 AM EST | Flash Flood Warning | GRR | Clare, Lake, Osceola | 12 hr |
| Feb 21, 10:15 AM EST | Flash Flood Warning | GRR | Mason | 12 hr |
Nearby
Flash Flood Warnings in Michigan, 1997Every flash flood warning in 1997
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.