Alert archive / Michigan / Flash Flood Warnings in 1996

Flash Flood Warning 7, NWS Grand Rapids, MI

May 10, 1996Berrien County, Cass County, Michigan

NWS Grand Rapids, MI issued this flash flood warning at May 10, 1996, 2:40 PM EDT for Berrien County, Cass County, Michigan. It was in force for 6 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 10, 1996, 2:40 PM EDT (18:40 UTC)
Expired
May 10, 1996, 9:00 PM EDT
In force
6 hr
Issued by
NWS Grand Rapids, MI
Area
Whole counties

Counties Berrien County, MI, Cass County, MI

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 6.7 hours before the alert went out and 245 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 12:00Z on 1996-05-10Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 1996-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 square meters per square second.1939Sfc1 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
946 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
130 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 101845
FFWGRR
MIC021-027-110100-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
240 PM EDT FRI MAY 10 1996

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  900 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTHWEST LOWER MICHIGAN

   ...SOUTH HALF OF BERRIEN COUNTY...

THE FLOOD WARNING FOR SOUTH BERRIEN COUNTY HAS BEEN EXTENDED UNTIL
900 PM THIS FRIDAY EVENING. THE WARNING FOR SOUTH CASS COUNTY HAS
BEEN CANCELLED. FROM 2 TO 5 INCHES OF RAIN HAS BEEN MEASURED IN
THE WARNED AREA SINCE THURSDAY MORNING. MANY ROADS HAVE BEEN WASHED
OUT... ALONG WITH SOME RAILROAD TRACKS. MANY BRIDGES HAVE BEEN
WEAKENED FROM THE HEAVY RAINFALL. MOTORISTS ARE URGED TO USE EXTREME
CAUTION ON SOUTH BERRIEN COUNTY ROADS.

AT 240 PM EDT... GRAND RAPIDS DOPPLER RADAR SHOWED AN AREA OF
LIGHT RAIN MOVING ACROSS BERRIEN COUNTY. THE RAIN WILL CONTINUE
THROUGH THE AFTERNOON. MOST OF THE RAIN WILL BE LIGHT... BUT AN
EMBEDDED THUNDERSTORM WILL BE POSSIBLE. ALL OF THIS ADDITIONAL
MOISTURE WILL ONLY MAKE DAMAGED ROADS WEAKER. ANOTHER QUARTER TO
ONE HALF INCH OF RAIN WILL BE POSSIBLE THIS EVENING.

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.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. IF
FLOOD WATERS THREATEN YOUR LOCATION YOU SHOULD MOVE TO HIGHER
GROUND.

MJK

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 12:03 AM EDTSevere Thunderstorm WarningGRRBerrien42 min
May 10, 12:11 AM EDTFlash Flood WarningGRRBerrien, Cass3 hr
May 10, 3:08 AM EDTFlash Flood WarningGRRBerrien, Cass5 hr
May 10, 8:30 AM EDTFlash Flood WarningGRRBerrien, Cass7 hr

Nearby

Flash Flood Warnings in Michigan, 1996Every flash flood warning in 1996

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.