Alert archive / Maryland / Flash Flood Warnings in 2004

Flash Flood Warning 71, NWS Philadelphia/Mount Holly

August 11, 2004Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 11, 2004, 9:05 PM EDT for Talbot County, Maryland. 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 counties it named.

The facts

Issued: Aug 11, 2004, 9:05 PM EDT (01:05 UTC)
Expired: Aug 12, 2004, 1:00 AM EDT
In force: 4 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

County Talbot County, MD

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 1.1 hours before the alert went out and 108 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: 777 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 1102 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KPHI 120110
FFWPHI
MDC041-120500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
905 PM EDT WED AUG 11 2004

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  TALBOT COUNTY IN EASTERN MARYLAND

* UNTIL 100 AM EDT

* AT 859 PM EDT...FLASH FLOODING WAS REPORTED AROUND SAINT 
  MICHAELS IN THE WESTERN PART OF THE COUNTY. FLOODING REACHED 
  INTO THE FIRST FLOOR OF SOME HOMES. DOPPLER RADAR REPORTED
  STORM TOTAL ESTIMATES OF 4 TO 5 INCHES IN THE WESTERN PART
  OF THE COUNTY. THE HEAVY RAIN HAS ENDED.

PLEASE FOLLOW THE DIRECTION OF EMERGENCY PERSONNEL IN YOUR AREA. 
NEVER DRIVE AROUND BARRICADES.

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.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER 
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE 
TELEVISION OUTLET.

LAT...LON 3878 7633 3886 7627 3881 7621 3885 7619
      3889 7609 3894 7609 3892 7596 3881 7591
      3866 7621 3874 7625 3871 7628 3872 7632
      3868 7632 3877 7634 3878 7635 3874 7638
      3877 7640

$$

TFG

1 follow-up statement

000 
WGUS71 KPHI 120505
FFSPHI
MDC041-120510-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
100 AM EDT THU AUG 12 2004

...THE FLASH FLOOD WARNING FOR TALBOT COUNTY ON THE MARYLAND EASTERN 
SHORE HAS EXPIRED AT 1 AM...

THE FLOODING OVER PARTS OF THE COUNTY FROM THE TORRENTIAL RAINS OF 
FOUR TO FIVE INCHES HAS EASED ACROSS THE COUNTY.

NWS RADARS DID NOT SHOW ANY ADDITIONAL PRECIPITATION IN TALBOT 
COUNTY AT THIS TIME. THERE WERE SOME LIGHT SHOWERS OVER EXTREME THE 
EXTREME WESTERN PART OF VIRGINIA. HOWEVER...MORE RAIN AND SOME OF IT 
HEAVY IS EXPECTED AGAIN LATER TODAY.

STAY TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA FOR THE LATEST SEVERE
WEATHER INFORMATION.

$$

EBERWINE

Nearby

Flash Flood Warnings in Maryland, 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.