Alert archive / Pennsylvania / Flash Flood Warnings in 2008

Flash Flood Warning 8, NWS Philadelphia/Mount Holly

June 14, 2008Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 14, 2008, 2:23 PM EDT for Monroe County, Pennsylvania. It was in force for 3 hr. 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 14, 2008, 2:23 PM EDT (18:23 UTC)
Expired
Jun 14, 2008, 5:30 PM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

County Monroe County, PA

The radar

The Binghamton radar (KBGM), 134 km from the middle of the area, began a volume at 18:25 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, 6.4 hours before the alert went out and 194 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, Brookhaven, NY at 12:00Z on 2008-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 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, Brookhaven, NY at 12:00Z on 2008-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
29 J/kg
Mixed-layer CIN
-177 J/kg
Mixed-layer LCL
1159 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
72 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 141824
FFWPHI
PAC089-142130-
/O.NEW.KPHI.FF.W.0008.080614T1823Z-080614T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
223 PM EDT SAT JUN 14 2008

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN MONROE COUNTY IN NORTHEAST PENNSYLVANIA...

* UNTIL 530 PM EDT

* AT 220 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SECOND THUNDERSTORM WITH TORRENTIAL DOWNPOURS GOING OVER
  THE SAME AREA OF NORTHEASTERN MONROE COUNTY. ADDITIONAL 
  RAINFALL AMOUNTS OF AROUND TWO INCHES ARE EXPECTED ON TOP
  OF AN ADDITIONAL ONE TO TWO INCHES THAT HAS ALREADY FALLEN.
 
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CANADENSIS...SKYTOP AND MOUNTAINHOME

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.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

LAT...LON 4122 7513 4118 7515 4116 7515 4115 7509
      4111 7505 4108 7505 4110 7527 4125 7528
      4125 7513
TIME...MOT...LOC 1823Z 180DEG 0KT 4116 7526

$$
 
TFG
1 follow-up statement
000 
WGUS71 KPHI 141922
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
319 PM EDT SAT JUN 14 2008

PAC089-142130-
/O.CON.KPHI.FF.W.0008.000000T0000Z-080614T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE PA-
319 PM EDT SAT JUN 14 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR
NORTHEASTERN MONROE COUNTY...

AT 319 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED
AREA. DOPPLER RADAR STORM TOTAL ESTIMATES HAVE JUST EXCEEDED FOUR 
INCHES ACROSS THE WARNED AREA IN NORTHERN PRICE AND EASTERN BARRETT
TOWNSHIPS IN AND AROUND SNOW HILL ROAD. THE BUSH KILL AND THE 
BRODHEAD CREEK ARE BEING AFFECTED BY THIS HEAVY RAIN.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CANADENSIS...
SKYTOP AND MOUNTAINHOME

ADDITIONAL RAINFALL AMOUNTS OF ONE INCH ARE POSSIBLE IN
THE WARNED AREA.

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.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

LAT...LON 4122 7513 4118 7515 4116 7515 4115 7509
      4111 7505 4108 7505 4110 7527 4125 7528
      4125 7513
TIME...MOT...LOC 1919Z 180DEG 0KT 4116 7526

$$
 
TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 3:02 PM EDTSevere Thunderstorm WarningPHIMonroe58 min
Jun 14, 4:26 PM EDTSevere Thunderstorm WarningPHICarbon, Monroe, Northampton64 min
Jun 14, 4:49 PM EDTFlash Flood WarningPHICarbon5 hr
Jun 14, 5:07 PM EDTSevere Thunderstorm WarningPHICarbon, Monroe53 min
Jun 14, 5:18 PM EDTSevere Thunderstorm WarningPHICarbon, Monroe57 min
Jun 14, 6:15 PM EDTSevere Thunderstorm WarningPHIChester75 min
Jun 14, 6:28 PM EDTFlash Flood WarningPHIChester60 min
Jun 14, 6:48 PM EDTFlash Flood WarningPHICarbon, Monroe3 hr
Jun 14, 7:05 PM EDTSevere Thunderstorm WarningPHIBerks, Chester, Montgomery70 min
Jun 14, 7:42 PM EDTSevere Thunderstorm WarningPHIBucks, Chester, Montgomery63 min
Jun 14, 7:56 PM EDTSevere Thunderstorm WarningPHIBucks, Delaware, Philadelphia79 min

Nearby

Flash Flood Warnings in Pennsylvania, 2008Every flash flood warning in 2008

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.