Alert archive / Pennsylvania / Flash Flood Warnings in 2004

Flash Flood Warning 7, NWS Philadelphia/Mount Holly

June 25, 2004Kent County, Delaware; Sussex County, Warren County, New Jersey; 4 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 25, 2004, 5:11 PM EDT for Kent County, Delaware; Sussex County, Warren County, New Jersey; 4 counties in Pennsylvania. It was in force for 85 days. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 25, 2004, 5:11 PM EDT (21:11 UTC)
Expired: Sep 18, 2004, 1:45 PM EDT
In force: 85 days
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

Counties Kent County, DE, Sussex County, NJ, Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 141 km from the middle of the area, began a volume at 21:11 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

Brookhaven, NY (KOKX), launched 12:00Z, 9.2 hours before the alert went out and 199 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: 1143 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 127 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 252113
FFWPHI
DEC001-252315-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
511 PM EDT FRI JUN 25 2004

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL KENT COUNTY IN CENTRAL DELAWARE
  THIS INCLUDES THE CITY OF DOVER

* UNTIL 715 PM EDT

* NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN THAT
  MAY AFFECT THE FOLLOWING STREAMS: MUDDY BRANCH AND THE SAINT JONES
  RIVER IN AND NEAR THE CITY OF DOVER.

* AT 506 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  BETWEEN 2 AND 3 INCHES OF RAIN HAS ALREADY FALLEN IN THE AREA 
  AND MORE RAIN IS ON THE WAY.


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 3917 7566 3903 7553 3906 7537 3929 7554

$$

JJM

1 follow-up statement

000 
WGUS51 KPHI 181358
FFWPHI
NJC037-041-PAC025-077-089-095-181745-
/X.NEW.KPHI.FF.W.0007.040918T1348Z-040918T1745Z/
/0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
948 AM EDT SAT SEP 18 2004

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS CONTINUED A

* FLASH FLOOD WARNING FOR...
  LEHIGH COUNTY IN EASTERN PENNSYLVANIA
  NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA
  CARBON COUNTY IN NORTHEAST PENNSYLVANIA
  MONROE COUNTY IN NORTHEAST PENNSYLVANIA
  SUSSEX COUNTY IN NORTHWEST NEW JERSEY
  WARREN COUNTY IN NORTHWEST NEW JERSEY

* UNTIL 145 PM EDT

* AT 947 AM EDT...WIDESPREAD FLOODING HAS BEEN REPORTED THROUGHOUT   
  THE POCONO MOUNTAIN AREA AND THE LEHIGH VALLEY, AS WELL AS IN      
  NORTHWESTERN NEW JERSEY. DOPPLER RADAR CONTINUES TO SHOW RAIN      
  THROUGHOUT THE REGION THIS MORNING. IN ADDITION...THE EXTREMELY    
  WET SOILS COMBINED WITH WINDS 20 TO 30 MPH ARE BRINGING DOWN TREES 
  ACROSS THE AREA. EMERGENCY MANAGEMENT PERSONNEL REQUEST RESIDENTS  
  TO STAY OFF THE ROADS IF AT ALL POSSIBLE. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO POCONO
  PINES...MOUNTAINHOME...MOUNT POCONO...EAST STROUDSBURG...
  BRODHEADSVILLE...NEWTON...CRANDON LAKES...BRANCHVILLE...BLAIRSTOWN
  AND ANDOVER.

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 4098 7474 4048 7554 4072 7577 4074 7576
      4090 7595 4104 7555 4113 7564 4123 7555
      4125 7514 4116 7517 4115 7510 4108 7502
      4112 7493 4127 7483 4130 7471 4130 7471

$$

JJM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 3:17 PM EDT	Flash Flood Warning	PHI	New Castle	85 days
Jun 25, 3:24 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	51 min
Jun 25, 3:38 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon	67 min
Jun 25, 4:01 PM EDT	Flash Flood Warning	PHI	Hunterdon, Morris	85 days
Jun 25, 4:21 PM EDT	Severe Thunderstorm Warning	PHI	Somerset	54 min
Jun 25, 4:57 PM EDT	Severe Thunderstorm Warning	PHI	Morris	48 min
Jun 25, 6:29 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon	61 min
Jun 25, 7:13 PM EDT	Severe Thunderstorm Warning	PHI	Berks	62 min
Jun 25, 7:25 PM EDT	Flash Flood Warning	PHI	Berks, Chester, Delaware	85 days

Nearby

Flash Flood Warnings in Pennsylvania, 2004 Flash Flood Warnings in New Jersey, 2004 Flash Flood Warnings in Delaware, 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; radar from the NEXRAD Level II archive.