Alert archive / Michigan / Flash Flood Warnings in 2004

Flash Flood Warning 6, NWS Gaylord, MI

August 2, 2004Mackinac County, Michigan

NWS Gaylord, MI issued this flash flood warning at Aug 2, 2004, 2:00 PM EDT for Mackinac County, Michigan. It was in force for 4 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 2, 2004, 2:00 PM EDT (18:00 UTC)
Expired
Aug 2, 2004, 6:00 PM EDT
In force
4 hr
Issued by
NWS Gaylord, MI
Area
Counties, with a storm outline in the text

County Mackinac County, MI

The radar

The NCL Michigan radar (KAPX), 128 km from the middle of the area, began a volume at 18:02 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, 6.0 hours before the alert went out and 221 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, Alpena, MI at 12:00Z on 2004-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1086 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Alpena, MI at 12:00Z on 2004-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
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 021802
FFWAPX
MIC097-022200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
200 PM 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 600 PM EDT

* AT 150 PM EDT...EMERGENCY MANAGEMENT OFFICIALS AND LAW ENFORCEMENT
  CONTINUE TO REPORT SECTIONS OF SEVERAL ROADS WASHED OUT ACROSS 
  MACKINAC COUNTY...DUE TO HEAVY RAINFALL FROM THUNDERSTORMS EARLIER 
  TODAY. ADDITIONAL THUNDERSTORMS ARE EXPECTED TO MOVE ACROSS THE    
  WARNING AREA THIS AFTERNOON...WHICH MAY EXACERBATE THE ONGOING 
  FLOODING.

* LOCATIONS IMPACTED INCLUDE...
  EPOUFETTE...BREVORT...AND SAINT IGNACE.

DOPPLER RADAR ESTIMATED THAT BETWEEN 4 AND 5 INCHES OF RAINFALL 
OCCURRED ACROSS PARTS OF MACKINAC COUNTY EARLIER TODAY.

NEARLY HALF OF ALL FLOOD FATALITIES ARE VEHICLE RELATED. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE
ROADWAY. NEVER DRIVE THROUGH FLOWING WATER. ONLY A FEW INCHES OF
FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
GAYLORD.

LAT...LON 4597 8440 4601 8443 4605 8466 4586 8480
      4603 8502 4613 8540 4613 8552 4598 8566
      4598 8584 4624 8583 4621 8516 4615 8511
      4615 8436 4608 8436 4607 8424 4600 8424
      4599 8414

$$
2 follow-up statements
000 
WGUS73 KAPX 021944
FFSAPX
MIC097-022200-

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

...FLASH FLOOD WARNING CONTINUES FOR MACKINAC COUNTY UNTIL 600 PM...

A FLASH FLOOD WARNING REMAINS IN EFFECT FOR MACKINAC COUNTY UNTIL 
600 PM. AT 345 PM...DOPPLER RADAR SHOWED THUNDERSTORMS MOVING ACROSS 
MACKINAC COUNTY...OVER THE SAME AREAS WHERE RADAR ESTIMATES 
FROM EARLIER TODAY INDICATED 4 TO 5 INCHES OF RAINFALL.

THE HEAVY RAINFALL EARLIER TODAY 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 WAS ALSO WASHED OUT...JUST SOUTH 
OF EPOUFETTE OFF OF US-2. 

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

$$
000 
WGUS73 KAPX 022209
FFSAPX
MIC097-022300-

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

...FLASH FLOOD WARNING FOR MACKINAC COUNTY HAS BEEN ALLOWED TO 
EXPIRE...

THE SHOWERS AND THUNDERSTORMS OF EARLIER TODAY THAT PRODUCED RADAR 
ESTIMATES OVER NEARLY 5 INCHES OF RAINFALL OVER MACKINAC COUNTY HAVE 
MOVED EAST. EMERGENCY MANAGEMENT OFFICIALS REPORT THAT THE WATERS 
HAVE RECEDED AND NO LONGER POSE A THREAT. AS A RESULT...THE FLASH 
FLOOD WARNING THAT WAS IN EFFECT FOR MACKINAC COUNTY HAS BEEN 
ALLOWED TO EXPIRE.

STAY TUNED TO NATIONAL WEATHER SERVICE WEATHER RADIO FOR THE LATEST 
WEATHER INFORMATION...INCLUDING WATCHES AND WARNINGS.

LAT...LON 4619 8554 4602 8547 4612 8483 4612 8493

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 12:00 PM EDTFlash Flood WarningAPXMackinac2 hr
Aug 2, 1:35 PM EDTSevere Thunderstorm WarningAPXPresque Isle40 min
Aug 2, 1:42 PM EDTSevere Thunderstorm WarningAPXPresque Isle33 min
Aug 2, 1:47 PM EDTSpecial Marine WarningAPX88 min
Aug 2, 2:09 PM EDTSevere Thunderstorm WarningAPXPresque Isle51 min
Aug 2, 2:23 PM EDTSevere Thunderstorm WarningAPXAlpena52 min
Aug 2, 2:42 PM EDTSevere Thunderstorm WarningAPXAlcona48 min
Aug 2, 2:50 PM EDTSpecial Marine WarningAPX85 min
Aug 2, 3:23 PM EDTSevere Thunderstorm WarningAPXOtsego52 min
Aug 2, 3:30 PM EDTSevere Thunderstorm WarningAPXAlcona45 min
Aug 2, 3:37 PM EDTSevere Thunderstorm WarningAPXOscoda53 min
Aug 2, 4:10 PM EDTSevere Thunderstorm WarningAPXRoscommon50 min
Aug 2, 4:35 PM EDTSevere Thunderstorm WarningAPXIosco40 min
Aug 2, 4:40 PM EDTSpecial Marine WarningAPX2 hr
Aug 2, 4:40 PM EDTSpecial Marine WarningAPX2 hr
Aug 2, 4:46 PM EDTFlash Flood WarningAPXAlcona3 hr
Aug 2, 4:53 PM EDTSevere Thunderstorm WarningAPXOgemaw67 min
Aug 2, 5:20 PM EDTSevere Thunderstorm WarningAPXIosco55 min
Aug 2, 5:38 PM EDTSevere Thunderstorm WarningAPXArenac52 min

Nearby

Flash Flood Warnings in Michigan, 2004Every 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.