Alert archive / Michigan / Flash Flood Warnings in 2011
Flash Flood Warning 8, NWS Gaylord, MI
NWS Gaylord, MI issued this flash flood warning at Aug 9, 2011, 10:20 AM EDT for Chippewa County, Mackinac County, Michigan. It was in force for 2 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 9, 2011, 10:20 AM EDT (14:20 UTC)
- Expired
- Aug 9, 2011, 12:24 PM EDT
- In force
- 2 hr
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Chippewa County, MI, Mackinac County, MI
The radar
The NCL Michigan radar (KAPX), 148 km from the middle of the area, began a volume at 14:21 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
Alpena, MI (KAPX), launched 12:00Z, 2.3 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.
- Mixed-layer CAPE
- 58 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 815 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
274
WGUS53 KAPX 091420
FFWAPX
MIC033-097-091730-
/O.NEW.KAPX.FF.W.0008.110809T1420Z-110809T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
1020 AM EDT TUE AUG 9 2011
THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL MACKINAC COUNTY IN EASTERN UPPER MICHIGAN...
WEST CENTRAL CHIPPEWA COUNTY IN EASTERN UPPER MICHIGAN...
* UNTIL 130 PM EDT
* AT 1017 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RAINFALL OF 2 TO 3 INCHES HAS ALREADY OCCURRED
WITH THESE STORMS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...EAST
LAKE...FIBRE...GARNET...REXTON AND TROUT LAKE.
THIS INCLUDES THE CARP RIVER IN SOUTHWEST CHIPPEWA AND NORTH CENTRAL
MACKINAC COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE WARNED
AREA.
&&
LAT...LON 4631 8475 4607 8482 4607 8503 4608 8531
4624 8536 4626 8531 4625 8525 4627 8524
4629 8516
$$
ARNOTT2 follow-up statements
379
WGUS73 KAPX 091532
FFSAPX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
1132 AM EDT TUE AUG 9 2011
MIC033-097-091730-
/O.CON.KAPX.FF.W.0008.000000T0000Z-110809T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MACKINAC MI-CHIPPEWA MI-
1132 AM EDT TUE AUG 9 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WEST CENTRAL CHIPPEWA
AND CENTRAL MACKINAC COUNTIES UNTIL 130 PM EDT...
AT 1130 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR
ESTIMATES OF 4 TO AS MUCH AS 6 INCHES HAVE FALLEN SO FAR WITH THESE
STORMS...WITH THE GREATEST AMOUNTS CENTERED NEAR TROUT LAKE.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...EAST
LAKE...FIBRE...GARNET...REXTON AND TROUT LAKE.
RAINFALL WILL COME TO AN END DURING THE NEXT 1 TO 2 HOURS ACROSS THE
WARNED AREA WITH LESS THAN ONE INCH OF ADDITIONAL RAINFALL
EXPECTED.
THE WARNED AREA INCLUDES THE CARP RIVER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN GAYLORD.
&&
LAT...LON 4631 8475 4607 8482 4607 8503 4608 8531
4624 8536 4626 8531 4625 8525 4627 8524
4629 8516
$$
ARNOTT897
WGUS73 KAPX 091624
FFSAPX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
1224 PM EDT TUE AUG 9 2011
MIC033-097-091635-
/O.CAN.KAPX.FF.W.0008.000000T0000Z-110809T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MACKINAC MI-CHIPPEWA MI-
1224 PM EDT TUE AUG 9 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT WEST CENTRAL CHIPPEWA
AND CENTRAL MACKINAC COUNTIES IS CANCELLED...
THE HEAVY RAIN HAS ENDED OVER THE WARNED AREA...THEREFORE THE
WARNING HAS BEEN CANCELLED. RUNOFF FROM THE HEAVIER RAIN OF THIS
MORNING WILL CONTINUE TO FLOW INTO STREAMS AND CREEKS OVER THE NEXT
FEW HOURS. BECAUSE OF THIS...MINOR FLOODING WILL REMAIN POSSIBLE.
IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW
ENFORCEMENT AGENCY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF FLOODING WAS OBSERVED PLEASE RELAY YOUR REPORT TO LOCAL LAW
ENFORCEMENT OR TO THE NATIONAL WEATHER SERVICE IN GAYLORD.
&&
LAT...LON 4631 8475 4607 8482 4607 8503 4608 8531
4624 8536 4626 8531 4625 8525 4627 8524
4629 8516
$$
JKThe office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 9:03 AM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 33 min |
| Aug 9, 11:35 AM EDT | Special Marine Warning | APX | 35 min | |
| Aug 9, 11:38 AM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix | 67 min |
| Aug 9, 12:09 PM EDT | Special Marine Warning | APX | 2 hr | |
| Aug 9, 12:15 PM EDT | Severe Thunderstorm Warning | APX | Antrim | 45 min |
| Aug 9, 1:42 PM EDT | Special Marine Warning | APX | 61 min | |
| Aug 9, 4:22 PM EDT | Small Craft Advisory | APX | 37 hr |
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.