Alert archive / Michigan / Flash Flood Warnings in 2011
Flash Flood Warning 7, NWS Gaylord, MI
NWS Gaylord, MI issued this flash flood warning at Aug 7, 2011, 3:58 PM EDT for Arenac 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 outline as issued.
The facts
- Issued
- Aug 7, 2011, 3:58 PM EDT (19:58 UTC)
- Expired
- Aug 7, 2011, 7:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Flood severity
- None
County Arenac County, MI
The radar
The NCL Michigan radar (KAPX), 124 km from the middle of the area, began a volume at 19:59 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.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 8.0 hours before the alert went out and 142 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.
- Mixed-layer CAPE
- 134 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 631 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
265
WGUS53 KAPX 071958
FFWAPX
MIC011-072300-
/O.NEW.KAPX.FF.W.0007.110807T1958Z-110807T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
358 PM EDT SUN AUG 7 2011
THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL ARENAC COUNTY IN NORTHERN LOWER MICHIGAN...
* UNTIL 700 PM EDT
* AT 358 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RADAR ESTIMATES THAT OVER 3 INCHES HAS FALLEN IN THE
LAST HOURS...AND ANOTHER INCH IS POSSIBLE BEFORE THE RAIN ENDS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
&&
LAT...LON 4391 8405 4398 8405 4398 8386 4395 8386
4393 8387 4391 8390 4391 8404
$$
JH3 follow-up statements
110
WGUS73 KAPX 072047
FFSAPX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
447 PM EDT SUN AUG 7 2011
MIC011-072300-
/O.CON.KAPX.FF.W.0007.000000T0000Z-110807T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ARENAC MI-
447 PM EDT SUN AUG 7 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL ARENAC
COUNTY UNTIL 700 PM EDT...
AT 441 PM EDT...THE THREAT FOR FLASH FLOODING CONTINUED OVER THE
WARNED AREA. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY
HEAVY RAINFALL OF 3 INCHES OCCURRED BETWEEN 300 AND 400 PM. IN
ADDITION...RADAR SHOWED NEW THUNDERSTORMS DEVELOPING AND MOVING INTO
THE WARNING AREA. ADDITIONAL RAINFALL TOTALS OF 1 TO 2 INCHES CAN BE
EXPECTED THROUGH 700 PM.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...RURAL AREAS
JUST SOUTH OF STANDISH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
&&
LAT...LON 4391 8405 4398 8405 4398 8386 4395 8386
4393 8387 4391 8390 4391 8404
$$
JH637
WGUS73 KAPX 072147
FFSAPX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
547 PM EDT SUN AUG 7 2011
MIC011-072300-
/O.CON.KAPX.FF.W.0007.000000T0000Z-110807T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ARENAC MI-
547 PM EDT SUN AUG 7 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL ARENAC
COUNTY UNTIL 700 PM EDT...
AT 541 PM EDT...RADAR INDICATED THAT OVER 3 INCHES OF RAIN FELL
BETWEEN 300 PM AND 500 PM...IN THE RURAL AREAS JUST SOUTH OF
STANDISH. SOME LOCATIONS THAT WILL OCCUR IN THIS AREA. THE THREAT OF
HEAVY DOWNPOURS WILL CONTINUE THROUGH THE EARLY EVENING HOURS. ANY
ADDITIONAL RAINFALL WILL EXACERBATE ON-GOING FLOODING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
&&
LAT...LON 4391 8405 4398 8405 4398 8386 4395 8386
4393 8387 4391 8390 4391 8404
$$
JH522
WGUS73 KAPX 072254
FFSAPX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
654 PM EDT SUN AUG 7 2011
MIC011-072306-
/O.EXP.KAPX.FF.W.0007.000000T0000Z-110807T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ARENAC MI-
654 PM EDT SUN AUG 7 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT SOUTH CENTRAL ARENAC
COUNTY WILL BE ALLOWED TO EXPIRE AT 700 PM EDT...
A FEW MORE RAIN SHOWERS WILL MOVE THROUGH THE AREA THROUGH 8 PM.
HOWEVER...HEAVIEST RAINFALL AND RAPID RUNOFF HAS ENDED. IF FLOODING
HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT
AGENCY.
LAT...LON 4391 8405 4398 8405 4398 8386 4395 8386
4393 8387 4391 8390 4391 8404
$$
ADAMThe office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 4:54 PM EDT | Special Marine Warning | APX | 51 min |
Nearby
Flash Flood Warnings in Michigan, 2011Every flash flood warning in 2011
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; radar from the NEXRAD Level II archive.