Flash Flood Warning 20, NWS Grand Rapids, MI

Issued

Jun 12, 1996, 7:46 PM EDT (23:46 UTC)

Expired

Jun 12, 1996, 9:45 PM EDT

In force

119 min

Issued by

NWS Grand Rapids, MI

Area

Whole counties

County Isabella County, MI

The Grand Rapids radar (KGRR), 100 km from the middle of the area, began a volume at 23:46 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.

000 
TTAA00 KGRR 122346
FFWGRR
MIC073-130145-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
746 PM EDT WED JUN 12 1996
 
THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  945 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL LOWER MICHIGAN
 
   ...SOUTHERN ISABELLA COUNTY
 
AT 740 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR HAD ESTIMATED
RAINFALL AMOUNTS OF OVER 2 INCHES AROUND MOUNT PLEASANT AND SHEPHERD
BETWEEN 630 AND 730 PM EDT. THERE HAVE BEEN NUMEROUS REPORTS OF WATER
COVERED ROADS AND FLOODED LOW LYING AREAS ACROSS SOUTH CENTRAL AND
SOUTHEASTERN ISABELLA COUNTY. SHOWERS AND THUNDERSTORMS WILL CONTINUE TO
MOVE ACROSS SOUTHERN ISABELLA COUNTY THROUGH 900 PM EDT...WHICH COULD
BRING AN ADDITIONAL .50 TO 1.00 INCH OF RAIN BETWEEN 745 AND 900 PM EDT.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROAD.
THE WATER DEPTH MAY BE TOO GbREAT TO ALLOW YOU TO CROSS SAFELY.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY... AND
YOU SHOULD MOVE TO HIGHER GROUND.
 
BORIS

NWS Grand Rapids, MI wrote its last area forecast discussion before this flash flood warning went out at Jun 12, 2:25 PM EDT, 5 hours 21 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
225 PM EDT WED JUN 12 1996

UPPER LEVEL CUT OFF LO CONTINUES TO BE FORECAST PROBLEM. DIURNAL
SHOWERS AND THUNDERSTORMS DEVELOPING AGAIN THIS AFTERNOON UNDER UPPER
LEVEL SYSTEM. STEEP LAPSE RATES AND LOW LEVEL HEATING TO KEEP
THUNDERSTORMS MOST OF THE EARLY EVENING. STORMS TO DISSIPATE AFTER
SUNSET. WITH UPPER LEVEL LO SLOWLY DRIFTING EWD, SOME CLEARING/PT CLDY
COULD OCCUR TONIGHT. WITH ABUNDANT LOW LEVEL MOSITURE...IFR FOG/STRATUS
COULD BE A PROBLEM. THIS WILL ONLY OCCUR IF GRADIENT WIND DOES
NOT HOLD UP. CURRENT WINDS OVER MN IN ADVANCE OF SFC FNT ARE FAIRLY
LIGHT.

MODELS INDICATE UPPER LEVEL RIDGE BUILDING OVR FCST AREA ON THU. SFC
FRONT TO DROP S FROM MN. THIS FRONT IS FAIRLY ACTIVE ATM. THERMODYNAMIC
INDICES INDICATE AIR MASS WILL STILL BE UNSTABLE ON THU.
ABUNDANT LOW LEVEL MOSITURE WILL BE AVAILABLE FROM NEVER ENDING PCPN
OVER THE AREA. LOW LEVEL CONVERGENCE ASSzOCIATED WITH THE SFC FNT
SHOULD BE ENOUGH FORCING TO KICK OFF SHOWERS AND THUNDERSTORMS.
HIGH CHANCE POPS SHOULD BE GOOD FOR THU.

END/GARNET

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

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.