Alert archive / Delaware / Flash Flood Warnings in 2006

Flash Flood Warning 19, NWS Philadelphia/Mount Holly

June 25, 2006Sussex County, Delaware; Caroline County, Maryland

NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 25, 2006, 7:03 AM EDT for Sussex County, Delaware; Caroline County, Maryland. It was in force for 4 hr. 10 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 25, 2006, 7:03 AM EDT (11:03 UTC)
Expired
Jun 25, 2006, 11:00 AM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties Sussex County, DE, Caroline County, MD

The radar

The Dover AFB radar (KDOX), 33 km from the middle of the area, began a volume at 11:04 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.

What was reported inside it

TimeReportWhereRemark
Jun 25, 7:05 AM EDTFLASH FLOODFederalsburg, MDSTREET FLOODING IN FEDERALSBURG.
Jun 25, 7:10 AM EDTFLASH FLOODFederalsburg, MDRECEIVED REPORT OF ROADWAYS UNDER WATER IN SOUTHERN CAROLINE COUNTY.
Jun 25, 7:30 AM EDTHEAVY RAIN 9Federalsburg, MDRAIN GAGE AT FEDERALSBURG REPORTED A 6 HOUR RAINFALL TOTAL OF 9.00 INCHES.
Jun 25, 8:00 AM EDTFLOOD1 W Galestown, MDSECTIONS OF ROUTE 313 OR SHARPTOWN ROAD NEAR GALESTOWN WERE EITHER PARTIALLY DAMAGED OR WASHED OUT DUE TO THE FLOODING.
Jun 25, 8:00 AM EDTFLOOD2 E Hurlock, MDSECTIONS OF ROUTE 392 OR HARRISON FERRY ROAD BETWEEN HURLOCK AND FINCHVILLE WERE EITHER PARTIALLY DAMAGED OR WASHED OUT DUE TO THE FLOODING.
Jun 25, 8:00 AM EDTFLOOD2 Ne East New Market, MDREPORTS OF 9 TO 10 INCHES OF RAIN BETWEEN EAST NEW MARKET AND HURLOCK. SECTIONS OF ROUTE 392 BETWEEN HURLOCK AND EAST NEW MARKET WERE EITHER PARTIALLY DAMAGED OR WASHED OUT DUE TO THE FLOODING.
Jun 25, 8:00 AM EDTFLOOD2 Ne East New Market, MDREPORTS OF 9 TO 10 INCHES OF RAIN BETWEEN EAST NEW MARKET AND HURLOCK. SECTIONS OF ROUTE 392 OR WILLIAMSBURG ROAD BETWEEN HURLOCK AND EAST NEW MARKET WERE EITHER PARTIALLY DAMAGED OR WASHED OUT DUE TO THE FLOODING.
Jun 25, 8:00 AM EDTFLOOD2 Ne Hurlock, MDSECTIONS OF ROUTE 307 OR WILLIAMSBURG ROAD BETWEEN HURLOCK AND WILLIAMSBURG WERE EITHER PARTIALLY DAMAGED OR WASHED OUT DUE TO THE FLOODING.
Jun 25, 8:00 AM EDTFLOODSharptown, MDNUMEROUS REPORTS OF FLOODING IN THE TOWN OF SHARPTOWN. PORTIONS OF SHARPTOWN ROAD BETWEEN SHARPTOWN AND GALESTOWN WERE EITHER PARTIALLY DAMAGED OR WASHED OUT DUE TO THE FLOODING.
Jun 25, 11:00 AM EDTFLASH FLOODSeaford, DEFLOODING REPORTED IN AND AROUND THE SEAFORD AREA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 11.1 hours before the alert went out and 90 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, Wallops Is Stn, VA at 00:00Z on 2006-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1207 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, Wallops Is Stn, VA at 00:00Z on 2006-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.1939Sfc1 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
1207 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
533 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KPHI 251105
FFWPHI
DEC005-MDC011-251500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
703 AM EDT SUN JUN 25 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN CAROLINE COUNTY IN EASTERN MARYLAND
  WESTERN SUSSEX COUNTY IN SOUTHERN DELAWARE

* UNTIL 1100 AM EDT

* AT 700 AM EDT...THE PUBLIC REPORTED FLOODING FROM A THUNDERSTORM   
OVER THE WARNED AREA IN CAROLINE COUNTY.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

LAT...LON 3869 7596 3850 7580 3853 7545 3882 7552
      3885 7596

$$

STAUBER
2 follow-up statements
000 
WGUS71 KPHI 251157
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
755 AM EDT SUN JUN 25 2006

DEC005-MDC011-251500-
CAROLINE MD-SUSSEX DE-
755 AM EDT SUN JUN 25 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 AM EDT FOR
WESTERN SUSSEX AND SOUTHERN CAROLINE COUNTIES...

AT 731 AM EDT...A NATIONAL WEATHER SERVICE RAINFALL GAGE AT 
FEDERALSBURG IN MARYLAND HAD 9 INCHES OF RAIN. OFFICIALS FROM 
CAROLINE COUNTY IN MARYLAND HAVE REPORTED FLOODING OF MANY ROADWAYS.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA, BUT RADAR HAS INDICATED THAT THE HEAVIEST OF THIS 
ADDITIONAL RAIN WILL PROBABLY FALL IN SUSSEX COUNTY DELAWARE.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 3869 7596 3850 7580 3853 7545 3882 7552
      3885 7596

$$

RNS
000 
WGUS71 KPHI 251426
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1022 AM EDT SUN JUN 25 2006

DEC005-MDC011-251500-
CAROLINE MD-SUSSEX DE-
1022 AM EDT SUN JUN 25 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 AM EDT FOR
WESTERN SUSSEX AND SOUTHERN CAROLINE COUNTIES...

FLOODING HAS BEEN REPORTED OVER A GOOD PORTION OF SOUTHERN CAROLINE 
COUNTY IN MARYLAND AND OVER WESTERN SUSSEX COUNTY IN DELAWARE. 

NATIONAL WEATHER SERVICE RADAR INDICATED THAT ALTHOUGH RAIN 
CONTINUES IN THIS AREA, THE RAINFALL RATES HAVE DECREASED TO UNDER 
AN INCH PER HOUR. THE RAINFALL RATES WILL CONTINUE TO DECREASE AND 
THE FLOODING SHOULD GRADUALLY SUBSIDE THROUGH THE MORNING HOURS.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. 
MOVE TO HIGHER GROUND.

LAT...LON 3869 7596 3850 7580 3853 7545 3882 7552
      3885 7596

$$

STAUBER

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 25, 1:11 AM EDTFlash Flood WarningPHIKent3 hr
Jun 25, 11:00 AM EDTFlash Flood WarningPHISussex3 hr
Jun 25, 1:43 PM EDTFlash Flood WarningPHISussex3 hr
Jun 25, 3:04 AM EDTFlash Flood WarningPHITalbot3 hr

Nearby

Flash Flood Warnings in Delaware, 2006Flash Flood Warnings in Maryland, 2006Every flash flood warning in 2006

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.