Alert archive / Delaware / Flash Flood Warnings in 2005

Flash Flood Warning 35, NWS Philadelphia/Mount Holly

October 13, 2005New Castle County, Delaware; Salem County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Oct 13, 2005, 1:37 AM EDT for New Castle County, Delaware; Salem County, New Jersey. It was in force for 113 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 13, 2005, 1:37 AM EDT (05:37 UTC)
Expired: Oct 13, 2005, 3:30 AM EDT
In force: 113 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

Counties New Castle County, DE, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 80 km from the middle of the area, began a volume at 05:41 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 5.6 hours before the alert went out and 174 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 596 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: -13 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 130538
FFWPHI
DEC003-NJC033-130730-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
137 AM EDT THU OCT 13 2005

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NEW CASTLE COUNTY IN NORTHERN DELAWARE
  THIS INCLUDES THE CITY OF WILMINGTON
  SALEM COUNTY IN SOUTHERN NEW JERSEY

* UNTIL 330 AM EDT

* AT 136 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A BAND OF HEAVY RAINFALL MOVING ACROSS THE REGION. ADDITIONAL      
  RAINFALL IS EXPECTED THROUGH 330 AM. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CARNEYS
  POINT...STANTON...NEWPORT AND ELSMERE.

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 3941 7572 3948 7534 3962 7518 3981 7569

$$

OHARA

1 follow-up statement

000 
WGUS71 KPHI 130649
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
247 AM EDT THU OCT 13 2005

DEC003-NJC033-130657-
NEW CASTLE DE-SALEM NJ-
247 AM EDT THU OCT 13 2005

...THE FLASH FLOOD WARNING FOR SALEM AND CENTRAL NEW CASTLE COUNTIES
IS CANCELLED...

THE BAND OF HEAVIEST RAINFALL HAS MOVED AWAY FROM THE REGION FOR 
NOW. RADAR SHOWS THAT SCATTERED SHOWERS WILL CONTINUE ACROSS THE 
AREA THROUGH THE EARLY MORNING. BE AWARE OF STANDING WATER ON 
ROADWAYS AND FAST FLOWS IN LOCAL CREEKS AND STREAMS. DO NOT DRIVE IN 
AREAS WHERE COVERS THE ROAD. TURN AROUND DONT DROWN 

LAT...LON 3941 7572 3948 7534 3962 7518 3981 7569

$$

OHARA

Nearby

Flash Flood Warnings in Delaware, 2005 Flash Flood Warnings in New Jersey, 2005 Every flash flood warning in 2005

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.