Alert archive / Pennsylvania / Flash Flood Warnings in 2004
Flash Flood Warning 21, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 12, 2004, 7:32 PM EDT for 5 counties in Pennsylvania; Kent County, New Castle County, Delaware. It was in force for 78 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
- Jul 12, 2004, 7:32 PM EDT (23:32 UTC)
- Expired
- Sep 29, 2004, 1:15 AM EDT
- In force
- 78 days
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
Counties Kent County, DE, New Castle County, DE, Berks County, PA, Bucks County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.5 hours before the alert went out and 141 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.
- Mixed-layer CAPE
- 76 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 902 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS51 KPHI 122336
FFWPHI
DEC001-003-130230-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
732 PM EDT MON JUL 12 2004
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS CONTINUED A
* FLASH FLOOD WARNING FOR...
KENT COUNTY IN CENTRAL DELAWARE
NEW CASTLE COUNTY IN NORTHERN DELAWARE
* UNTIL 1030 PM EDT
* AT 730 PM EDT...WIDESPREAD FLOODING WAS REPORTED IN BOTH NEW
CASTLE AND KENT COUNTY DELAWARE. WHILE THE HEAVIEST RAIN
HAS NOW ENDED OVER NEW CASTLE COUNTY...HEAVY RAIN WAS CONTINUING
OVER KENT COUNTY AT 730 PM. PONDING OF WATER IN POOR DRAINAGE
AREAS REMAINS A PROBLEM THROUGHOUT BOTH COUNTIES AND WILL REMAIN
SO THROUGHOUT THE EVENING 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. DO NOT ALLOW CHILDREN TO PLAY NEAR DRAINAGE
OUTLETS.
LAT...LON 3954 7576 3966 7555 3966 7555 3966 7556
3963 7560 3961 7560 3960 7556 3955 7556
3947 7560 3931 7546 3900 7538 3891 7567
$$
JJM1 follow-up statement
000
WGUS51 KPHI 282314
FFWPHI
PAC011-017-077-091-095-290515-
/X.NEW.KPHI.FF.W.0021.040928T2311Z-040929T0515Z/
/0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
711 PM EDT TUE SEP 28 2004
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED
THE
* FLASH FLOOD WARNING FOR...
BERKS COUNTY
LEHIGH COUNTY
THIS INCLUDES THE CITY OF ALLENTOWN
NORTHAMPTON COUNTY
THIS INCLUDES THE CITY OF BETHLEHEM
BUCKS COUNTY
MONTGOMERY COUNTY
* UNTIL 115 AM EDT
* AT 705 PM EDT TORRENTIAL DOWNPOURS CONTINUE ACROSS MUCH OF
THE WARNING AREA. DOPPLER RADAR STORM TOTAL ESTIMATES HAVE
AVERAGED BETWEEN 2.5 AND 6 INCHES ACROSS THE WARNING AREA
WITH THE HIGHEST AMOUNTS IN LOWER BUCKS AND MONTGOMERY
COUNTIES. NEVER EVER DRIVE AROUND BARRICADES...THIS IS
A LIFE THREATENING SITUATION.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SCHNECKSVILLE...OLD ORCHARD...NORTHAMPTON...NAZARETH...
LENHARTSVILLE...KUTZTOWN...HELLERTOWN...EMMAUS...EASTON...
BELFAST...BATH AND ANCIENT OAKS.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. IT IS DIFFICULT AT NIGHT TO SEE THE DEPTH
OF WATER ON ROADWAYS. TURN AROUND, DONT DROWN.
LAT...LON 4076 7519 4069 7522 4067 7519 4065 7522
4057 7520 4055 7508 4043 7507 4039 7497
4035 7496 4030 7489 4022 7484 4009 7534
4059 7600 4084 7525
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 7:26 AM EDT | Flash Flood Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 68 days |
| Jul 12, 7:50 AM EDT | Flash Flood Warning | PHI | Chester | 68 days |
| Jul 12, 8:28 AM EDT | Flash Flood Warning | PHI | Montgomery | 78 days |
| Jul 12, 9:31 AM EDT | Flash Flood Warning | PHI | Berks, Chester, Delaware | 78 days |
| Jul 12, 12:10 PM EDT | Flash Flood Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 78 days |
| Jul 12, 4:33 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 78 days |
| Jul 12, 4:49 PM EDT | Flash Flood Warning | PHI | Philadelphia | 78 days |
| Jul 12, 4:50 PM EDT | Special Marine Warning | PHI | 70 min | |
| Jul 12, 6:51 PM EDT | Flash Flood Warning | PHI | Chester, Delaware | 78 days |
| Jul 12, 1:53 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 37 min |
| Jul 12, 2:22 PM EDT | Tornado Warning | PHI | New Castle | 38 min |
| Jul 12, 3:05 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 55 min |
| Jul 12, 3:51 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 54 min |
| Jul 12, 4:08 PM EDT | Tornado Warning | PHI | Kent | 37 min |
| Jul 12, 5:09 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 36 min |
| Jul 12, 5:45 PM EDT | Flash Flood Warning | PHI | Kent, New Castle, Sussex | 78 days |
Nearby
Flash Flood Warnings in Pennsylvania, 2004Flash Flood Warnings in Delaware, 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.