Alert archive / Michigan / Flash Flood Warnings in 2004

Flash Flood Warning 7, NWS Gaylord, MI

August 2, 2004Alcona County, Michigan

NWS Gaylord, MI issued this flash flood warning at Aug 2, 2004, 4:46 PM EDT for Alcona 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 2, 2004, 4:46 PM EDT (20:46 UTC)
Expired
Aug 2, 2004, 7:45 PM EDT
In force
3 hr
Issued by
NWS Gaylord, MI
Area
Counties, with a storm outline in the text

County Alcona County, MI

The radar

The NCL Michigan radar (KAPX), 108 km from the middle of the area, began a volume at 20:46 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, 8.8 hours before the alert went out and 93 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 022048
FFWAPX
MIC001-022345-

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

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ALCONA COUNTY IN NORTHERN LOWER MICHIGAN

* UNTIL 745 PM EDT

* AT 441 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN FROM THUNDERSTORMS MOVING ACROSS CENTRAL AND       
  SOUTHERN ALCONA COUNTY. THESE STORMS WERE MOVING EAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MIKADO...LINCOLN...HARRISVILLE...GLENNIE AND BARTON CITY.

DOPPLER RADAR RAINFALL ESTIMATES BETWEEN 3 AND 3.5 INCHES
HAVE FALLEN OVER THIS REGION...WITH ADDITIONAL RAINFALL EXPECTED.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
FLOWING WATER OR WATER OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE.

LAT...LON 4461 8332 4452 8331 4451 8332 4451 8388
      4467 8388 4477 8329 4476 8330 4473 8328
      4466 8329 4465 8328

$$
2 follow-up statements
000 
WGUS73 KAPX 022222
FFSAPX
MIC001-022345-

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

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM FOR ALCONA 
COUNTY...

A FLASH FLOOD WARNING REMAINS IN EFFECT FOR ALCONA COUNTY UNTIL 745 
PM. RADAR ESTIMATES THUS FAR INDICATE BETWEEN 4.5 AND 5 INCHES OF 
RAINFALL ACROSS SOUTHERN PARTS OF ALCONA COUNTY. AT 615 PM...DOPPLER 
RADAR SHOWED SHOWERS AND THUNDERSTORMS CONTINUING TO MOVE ACROSS THE 
WARNING AREA.  

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

LAT...LON 4478 8386 4463 8375 4459 8351 4481 8348

$$
000 
WGUS73 KAPX 022348
FFSAPX
MIC001-030015-

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

...FLASH FLOOD WARNING FOR ALCONA COUNTY HAS EXPIRED...

A FLASH FLOOD WARNING FOR ALCONA COUNTY HAS EXPIRED. 742 PM EDT 
NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED THAT THE THUNDERSTORMS 
THAT HAD PRODUCED THE HEAVY RAIN HAVE MOVED OUT OVER LAKE HURON. 
RADAR ESTIMATES THUS FAR INDICATE BETWEEN 4.5 AND 5 INCHES OF 
RAINFALL ACROSS SOUTHERN PARTS OF ALCONA COUNTY. PLEASE BEWARE OF 
WATER ACROSS ROADWAYS.

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


LAT...LON 4461 8332 4452 8331 4451 8332 4451 8388
      4485 8387 4485 8331 4481 8329 4476 8330
      4473 8328 4466 8329 4465 8328

$$

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, 2:00 PM EDTFlash Flood WarningAPXMackinac4 hr
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, 4:53 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.