Alert archive / Michigan / Flash Flood Warnings in 2004

Flash Flood Warning 5, NWS Gaylord, MI

August 2, 2004Mackinac County, Michigan

NWS Gaylord, MI issued this flash flood warning at Aug 2, 2004, 12:00 PM EDT for 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 counties it named.

The facts

Issued: Aug 2, 2004, 12:00 PM EDT (16:00 UTC)
Expired: Aug 2, 2004, 2:00 PM EDT
In force: 2 hr
Issued by: NWS Gaylord, MI
Area: Whole counties

County Mackinac County, MI

The radar

The NCL Michigan radar (KAPX), 107 km from the middle of the area, began a volume at 16:00 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, 4.0 hours before the alert went out and 205 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1086 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 949 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KAPX 021600
FFWAPX
MIC097-021800-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
NOON EDT MON AUG 2 2004

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MACKINAC COUNTY IN EASTERN UPPER MICHIGAN

* UNTIL 200 PM EDT

* AT 1150 AM EDT...EMERGENCY MANAGEMENT OFFICIALS IN MACKINAC COUNTY 
  REPORTED A PORTION OF US-2 NEAR THE CUT RIVER BRIDGE WASHED
  OUT DUE TO HEAVY RAINFALL. NATIONAL WEATHER SERVICE RADAR          
  CONTINUED TO INDICATE THUNDERSTORMS MOVING ALONG US-2 JUST WEST OF 
  SAINT IGNACE. 

* LOCATIONS IMPACTED INCLUDE...
  EPOUFETTE...BREVORT...AND MORAN

DOPPLER RADAR RAINFALL ESTIMATES BETWEEN 4 AND 5 INCHES OF RAIN HAVE 
FALLEN OVER THIS REGION DURING THE MORNING.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

LAT...LON 4592 8443 4597 8445 4589 8464 4589 8464
      4589 8462 4595 8456 4597 8464 4595 8454
      4600 8453 4605 8466 4596 8474 4589 8472
      4589 8484 4602 8507 4607 8507 4614 8436
      4608 8436 4607 8428 4595 8428

$$

1 follow-up statement

000 
WGUS73 KAPX 021706
FFSAPX
MIC097-021800-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
105 PM EDT MON AUG 2 2004

...FLASH FLOOD WARNING CONTINUES FOR MACKINAC COUNTY UNTIL 200 PM...

A FLASH FLOOD WARNING REMAINS IN EFFECT FOR MACKINAC COUNTY UNTIL 
200 PM. AT 100 PM...NATIONAL WEATHER SERVICE RADAR INDICATED THAT 
THE THUNDERSTORMS WHICH MOVED THROUGH THE AREA EARLIER HAD MOVED 
EAST. HOWEVER...4 TO 5 INCHES OF RAIN WERE ESTIMATED BY RADAR TO 
HAVE FALLEN AS A RESULT OF THE STORMS.

THE HEAVY RAINFALL HAS WASHED OUT ONE THIRD OF US-2 AT THE WEST 
APPROACH TO THE CUT RIVER BRIDGE...JUST EAST OF EPOUFETTE. A 
PORTION OF THE EPOUFETTE BAY ROAD HAS ALSO BEEN WASHED OUT...JUST 
SOUTH OF EPOUFETTE OFF OF US-2. IN ADDITION...TWO FEET OF STANDING 
WATER HAS BEEN REPORTED AT MILE MARKER 353 ON I-75 NORTH OF SAINT 
IGNACE.

MOTORISTS ARE URGED TO DRIVE WITH EXTREME CAUTION IN MACKINAC 
COUNTY. REMEMBER THAT ONE TO TWO FEET OF WATER CAN FLOAT MOST 
AUTOMOBILES. DO NOT ATTEMPT TO CROSS A FLOODED ROADWAY.

LAT...LON 4615 8554 4589 8543 4583 8446 4612 8440

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 1:35 PM EDT	Severe Thunderstorm Warning	APX	Presque Isle	40 min
Aug 2, 1:42 PM EDT	Severe Thunderstorm Warning	APX	Presque Isle	33 min
Aug 2, 1:47 PM EDT	Special Marine Warning	APX		88 min
Aug 2, 2:00 PM EDT	Flash Flood Warning	APX	Mackinac	4 hr
Aug 2, 2:09 PM EDT	Severe Thunderstorm Warning	APX	Presque Isle	51 min
Aug 2, 2:23 PM EDT	Severe Thunderstorm Warning	APX	Alpena	52 min
Aug 2, 2:42 PM EDT	Severe Thunderstorm Warning	APX	Alcona	48 min
Aug 2, 2:50 PM EDT	Special Marine Warning	APX		85 min
Aug 2, 3:23 PM EDT	Severe Thunderstorm Warning	APX	Otsego	52 min
Aug 2, 3:30 PM EDT	Severe Thunderstorm Warning	APX	Alcona	45 min
Aug 2, 3:37 PM EDT	Severe Thunderstorm Warning	APX	Oscoda	53 min
Aug 2, 4:10 PM EDT	Severe Thunderstorm Warning	APX	Roscommon	50 min
Aug 2, 4:35 PM EDT	Severe Thunderstorm Warning	APX	Iosco	40 min
Aug 2, 4:40 PM EDT	Special Marine Warning	APX		2 hr
Aug 2, 4:40 PM EDT	Special Marine Warning	APX		2 hr
Aug 2, 4:46 PM EDT	Flash Flood Warning	APX	Alcona	3 hr
Aug 2, 4:53 PM EDT	Severe Thunderstorm Warning	APX	Ogemaw	67 min
Aug 2, 5:20 PM EDT	Severe Thunderstorm Warning	APX	Iosco	55 min
Aug 2, 5:38 PM EDT	Severe Thunderstorm Warning	APX	Arenac	52 min

Nearby

Flash Flood Warnings in Michigan, 2004 Every flash flood warning in 2004

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.