Alert archive / Michigan / Flash Flood Warnings in 2000

Flash Flood Warning 1, NWS Grand Rapids, MI

May 12, 2000Allegan County, Michigan

NWS Grand Rapids, MI issued this flash flood warning at May 12, 2000, 7:26 PM EDT for Allegan County, Michigan. It was in force for 3 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: May 12, 2000, 7:26 PM EDT (23:26 UTC)
Expired: May 12, 2000, 10:15 PM EDT
In force: 3 hr
Issued by: NWS Grand Rapids, MI
Area: Whole counties

County Allegan County, MI

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 11.4 hours before the alert went out and 204 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1371 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KGRR 122326
FFWGRR
MIC005-130215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
725M EDT FRI MAY 12 2000

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ALLEGAN COUNTY IN SOUTHWEST MICHIGAN

* UNTIL 1015 PM EDT

* AT 720 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN ALONG A LINE EXTENDING     
  FROM 7 MILES NORTHEAST OF WAYLAND TO ALLEGAN...MOVING EAST AT 60   
  MPH. ADDITIONAL THUNDERSTORMS WITH HEAVY RAINFALL EXTENDED         
  SOUTHWEST ACROSS SOUTHERN LAKE MICHIGAN...MOVING NORTHEAST AT 40   
  TO 50 MPH.

* AT 715 PM EDT...FLASH FLOODING WAS REPORTED AT THE INTERSECTION
  OF 63RD STREET AND MICHIGAN HIGHWAY 89...APPROXIMATELY 4 MILES
  WEST OF FENNVILLE. AT THIS LOCATION...WATER WAS REPORTEDLY 4 FEET
  IN DEPTH...COVERING THE ROAD

* DOPPLER RADAR ESTIMATED 1 TO 2 INCHES OF RAIN HAD FALLEN ACROSS
  MUCH OF ALLEGAN COUNTY OVER THE LAST HOUR. RADAR SHOWED LOCALLY
  2.5 INCHES OF RAIN IN THE VICINITY OF SAUGATUCK...DOUGLAS...AND
  FENNVILLE. ADDITIONAL RAINFALL OF 1 TO 2 INCHES IS POSSIBLE 
  ACROSS PORTIONS OF ALLEGAN COUNTY BETWEEN 715 PM AND 900 PM EDT.

CREEKS AND STREAMS IN ALLEGAN COUNTY MAY COME OUT OF THEIR BANKS. IF 
YOU LIVE IN A FLOOD PRONE AREA...TAKE ACTION NOW !!

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

GREENE
&

NNNN

The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 12, 2:00 AM EDT	Severe Thunderstorm Warning	GRR	Oceana	45 min
May 12, 2:10 AM EDT	Severe Thunderstorm Warning	GRR	Muskegon	50 min
May 12, 2:27 AM EDT	Severe Thunderstorm Warning	GRR	Newaygo	48 min
May 12, 2:41 AM EDT	Severe Thunderstorm Warning	GRR	Ottawa	49 min
May 12, 2:55 AM EDT	Severe Thunderstorm Warning	GRR	Allegan	50 min
May 12, 3:05 AM EDT	Severe Thunderstorm Warning	GRR	Kent	40 min
May 12, 3:20 AM EDT	Severe Thunderstorm Warning	GRR	Ionia, Montcalm	40 min
May 12, 1:45 PM EDT	Severe Thunderstorm Warning	GRR	Mason	30 min
May 12, 2:25 PM EDT	Severe Thunderstorm Warning	GRR	Lake	25 min
May 12, 2:50 PM EDT	Severe Thunderstorm Warning	GRR	Osceola	25 min
May 12, 3:18 PM EDT	Severe Thunderstorm Warning	GRR	Clare	27 min
May 12, 4:27 PM EDT	Severe Thunderstorm Warning	GRR	Clare	33 min
May 12, 6:08 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Ottawa	37 min
May 12, 6:45 PM EDT	Severe Thunderstorm Warning	GRR	Allegan	30 min
May 12, 7:08 PM EDT	Severe Thunderstorm Warning	GRR	Newaygo	37 min
May 12, 7:13 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Barry	32 min
May 12, 7:54 PM EDT	Tornado Warning	GRR	Allegan, Kalamazoo	51 min

Nearby

Flash Flood Warnings in Michigan, 2000 Every flash flood warning in 2000

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.