Alert archive / Michigan / Flash Flood Warnings in 2012

Flash Flood Warning 7, NWS Grand Rapids, MI

July 25, 2012Clare County, Michigan

NWS Grand Rapids, MI issued this flash flood warning at Jul 25, 2012, 10:56 PM EDT for Clare County, Michigan. It was in force for 10 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 25, 2012, 10:56 PM EDT (02:56 UTC)
Expired
Jul 26, 2012, 9:08 AM EDT
In force
10 hr
Issued by
NWS Grand Rapids, MI
Area
Storm-based polygon
Flood severity
None

County Clare County, MI

The radar

The NCL Michigan radar (KAPX), 97 km from the middle of the area, began a volume at 02:57 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.

What was reported inside it

TimeReportWhereRemark
Jul 26, 7:54 AM EDTHEAVY RAIN 5.31 W Long Lake Heights, MIGENERAL PUBLIC REPORTED 5.3 INCHES OF RAINFALL TO 9 AND 10 BROADCAST MEDIA. OBSERVER LIVED ALONG LONG LAKE ROAD NEAR US-127 IN FROST TOWNSHIP.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 2.9 hours before the alert went out and 182 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 2012-07-26Temperature 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 00:00Z on 2012-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 226 square meters per square second.193958Sfc1 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
1843 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
226 m²/s²
0-3 km storm-relative helicity
373 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

848 
WGUS53 KGRR 260256
FFWGRR
MIC035-261500-
/O.NEW.KGRR.FF.W.0007.120726T0256Z-120726T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1056 PM EDT WED JUL 25 2012

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CLARE COUNTY IN CENTRAL MICHIGAN...

* UNTIL 1100 AM EDT THURSDAY

* AT 1055 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS CLARE    
  COUNTY.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CLARE...HARRISON...FARWELL...BROWNS CORNER AND DOVER.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 4413 8460 4382 8460 4382 8509 4416 8508
      4416 8461

$$

TJT
2 follow-up statements
882 
WGUS73 KGRR 260452
FFSGRR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1252 AM EDT THU JUL 26 2012

MIC035-261500-
/O.CON.KGRR.FF.W.0007.000000T0000Z-120726T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARE MI-
1252 AM EDT THU JUL 26 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CLARE COUNTY UNTIL 1100
AM EDT...

AT 1242 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS HAD EXITED CLARE COUNTY. HOWEVER...RADAR ESTIMATES 
THAT 3 TO 4 INCHES OF RAIN HAD FALLEN MOSTLY NORTH OF HIGHWAY 61. 
LEOTA HAD MEASURED 3.48 INCHES OF RAINFALL. ADDITIONAL 
THUNDERSTORMS WILL BE POSSIBLE OVER CLARE COUNTY THROUGH 3 AM 
EDT.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HARRISON...FARWELL...BROWNS CORNER AND DOVER. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS.

&&

LAT...LON 4413 8460 4382 8460 4382 8509 4416 8508
      4416 8461

$$

TJT
225 
WGUS73 KGRR 261308
FFSGRR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
908 AM EDT THU JUL 26 2012

MIC035-261320-
/O.CAN.KGRR.FF.W.0007.000000T0000Z-120726T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARE MI-
908 AM EDT THU JUL 26 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CLARE COUNTY IS
CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. A REPORT OF 
5.30 INCHES OF RAIN HAS BEEN RECEIVED FROM LONG LAKE HEIGHTS IN 
NORTHERN CLARE COUNTY FROM THE STORMS LAST NIGHT.

LAT...LON 4413 8460 4382 8460 4382 8509 4416 8508
      4416 8461

$$

DUKE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 8:12 PM EDTSpecial Weather StatementGRRClare, Lake, Mason, Osceola63 min
Jul 25, 8:19 PM EDTSpecial Marine WarningGRR41 min
Jul 25, 9:34 PM EDTSevere Thunderstorm WarningGRRClare, Osceola56 min
Jul 25, 9:40 PM EDTSpecial Marine WarningGRR95 min
Jul 25, 9:44 PM EDTTornado WarningGRRClare24 min
Jul 25, 9:49 PM EDTFlash Flood WarningGRRMason11 hr
Jul 25, 9:50 PM EDTSevere Thunderstorm WarningGRRMason, Oceana70 min
Jul 25, 10:44 PM EDTSevere Thunderstorm WarningGRRClare, Osceola61 min
Jul 25, 11:23 PM EDTSpecial Weather StatementGRRIsabella, Montcalm67 min
Jul 25, 11:40 PM EDTSevere Thunderstorm WarningGRRGratiot, Isabella, Mecosta, Montcalm80 min
Jul 26, 12:30 AM EDTSpecial Marine WarningGRR2 hr
Jul 26, 3:20 AM EDTSpecial Marine WarningGRR100 min
Jul 26, 4:14 AM EDTSevere Thunderstorm WarningGRRMuskegon, Ottawa37 min

Nearby

Flash Flood Warnings in Michigan, 2012Every flash flood warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.