Alert archive / Michigan / Flash Flood Warnings in 1997

Flash Flood Warning 13, NWS Grand Rapids, MI

February 21, 1997Jackson County, Michigan

NWS Grand Rapids, MI issued this flash flood warning at Feb 21, 1997, 10:20 PM EST for Jackson County, Michigan. It was in force for 9 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, 10:20 PM EST (03:20 UTC)
Expired
Feb 22, 1997, 7:00 AM EST
In force
9 hr
Issued by
NWS Grand Rapids, MI
Area
Whole counties

County Jackson County, MI

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 3.3 hours before the alert went out and 97 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-pSkew-T log-p diagram, Detroit, MI at 00:00Z on 1997-02-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 00:00Z on 1997-02-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.1939587897117136156175Sfc1 km3 km6 km9 kmRMLM
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
474 m above ground
0-6 km bulk shear
82 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
87 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 
TTAA00 KGRR 220324 COR
FFWGRR
MIC073-037-045-057-065-075-005-015-021-027-067-077-081-117-139-
159-107-121-123-127-221200-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING... RETRANSMISSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MICHIGAN
1020 PM EST FRI FEB 21 1997

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS EXTENDED
A FLOOD WARNING UNTIL 700 AM EST SATURDAY FOR PEOPLE IN THE
FOLLOWING LOCATIONS...

IN CENTRAL LOWER MICHIGAN

   ...ISABELLA COUNTY

IN SOUTH CENTRAL LOWER MICHIGAN

   ...CLINTON...EATON...GRATIOT...INGHAM...AND JACKSON COUNTIES

IN SOUTHWEST LOWER MICHIGAN

   ...ALLEGAN...BARRY...BERRIEN...CASS...IONIA...KALAMAZOO...KENT...
      MONTCALM...OTTAWA...AND VAN BUREN COUNTIES

IN WEST CENTRAL LOWER MICHIGAN

   ...MECOSTA...MUSKEGON...NEWAYGO...AND OCEANA COUNTIES

THIS INCLUDES THE CITIES OF BIG RAPIDS...MOUNT PLEASANT...MUSKEGON...
GRAND RAPIDS...HOLLAND...LANSING...KALAMAZOO...AND BENTON HARBOR.

RAINFALL AMOUNTS OF 1.5 TO 4 INCHES FROM THURSDAY AFTERNOON THROUGH
FRIDAY EVENING HAVE CAUSED FLOODING OF SEVERAL ROADS...IN ADDITION 
TO SMALL CREEKS AND STREAMS ACROSS THE WARNING AREA.

LOCAL LAW ENFORCEMENT OFFICIALS ACROSS MUCH OF CENTRAL AND SOUTHWEST
MICHIGAN REPORTED MANY ROAD CLOSURES DUE TO FLOODING. THE WORST 
FLOODING IS OCCURRING ACROSS ALLEGAN...EATON...GRATIOT...IONIA...
ISABELLA...KENT AND OTTAWA COUNTIES...WHERE RAINFALL AMOUNTS OF 3 
TO 4 INCHES WERE COMMON.

IN KENT COUNTY...BUCK CREEK HAS FLOODED THE INTERSECTION OF 54TH 
STREET NEAR CLAY IN WYOMING. PLASTER CREEK HAS FLOODED BACK YARDS
AND PASTURES NEAR 68TH STREET IN GAINES TOWNSHIP.

AT 1000 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED 
WIDESPREAD PRECIPITATION COVERING MOST OF LOWER MICHIGAN. RAIN HAD
CHANGED TO SLEET AND SNOW ALONG AND NORTH OF A LINE FROM BENTON
HARBOR TO KALAMAZOO TO LANSING. BY MIDNIGHT...ALL COUNTIES IN THE
WARNING AREA WILL HAVE SNOW FALLING AND TEMPERATURES AT OR BELOW
FREEZING. SNOWFALL WILL BRING ANOTH 0.20 TO 0.40 INCH OF LIQUID
EQUIVALENT PRECIPITATION TO THE WARNING AREA OVERNIGHT.

RUNOFF FROM THE RECENT HEAVY RAINS WILL CONTINUE TO ADD WATER TO LOW
LYING AREAS...CREEKS AND STREAMS OVERNIGHT. GROUND TEMPERATURES WILL
LIKELY STAY ABOVE FREEZING UNTIL AROUND DAYBREAK SATURDAY. WITH THE 
RAIN CHANGING TO SNOW TONIGHT...MOST CREEKS AND STREAMS WILL CREST
OVERNIGHT EARLY SATURDAY MORNING...BEFORE RECEEDING SATURDAY
AFTERNOON. LARGER RIVERS WILL NOT REACH CREST UNTIL LATE SATURDAY
INTO EARLY NEXT WEEK.
 
PLEASE REPORT ANY FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY...THEN
ASK THEM TO RELAY THE INFORMATION TO THE NATIONAL WEATHER SERVICE.

FLOODING DANGERS ARE GREATEST AT NIGHT. ICE AND SNOW MAY MASK AREAS
WHERE WATER COVERS THE ROAD. DO NOT DRIVE YOUR VEHICLE INTO AREAS 
WHERE THE WATER COVERS THE ROAD. THE WATER DEPTH MAY BE TOO GREAT TO
ALLOW YOU TO CROSS SAFELY.

THE NATIONAL WEATHER SERVICE OFFICE IN GRAND RAPIDS WILL CLOSELY 
MONITOR THIS FLOOD EVENT AND PROVIDE FREQUENT UPDATES TO LOCAL
TELEVISION AND RADIO MEDIA AND CABLE TV OUTLETS.


GREENE
&
RETRANSMISSION

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 21, 10:20 PM ESTFlash Flood WarningGRRBerrien, Cass, Van Buren9 hr
Feb 21, 10:20 PM ESTFlash Flood WarningGRRClinton, Eaton, Gratiot, Ingham9 hr
Feb 21, 10:20 PM ESTFlash Flood WarningGRRKalamazoo9 hr
Feb 21, 10:20 PM ESTFlash Flood WarningGRRIsabella, Mecosta9 hr
Feb 21, 10:20 PM ESTFlash Flood WarningGRRMuskegon, Newaygo, Oceana9 hr
Feb 21, 10:20 PM ESTFlash Flood WarningGRRAllegan, Barry, Ionia, Kent, Montcalm, Ottawa9 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.