Alert archive / Pennsylvania / Flash Flood Warnings in 2013

Flash Flood Warning 29, NWS Philadelphia/Mount Holly

July 1, 2013Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 1, 2013, 5:37 AM EDT for Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania. It was in force for 6 hr. 3 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: Jul 1, 2013, 5:37 AM EDT (09:37 UTC)
Expired: Jul 1, 2013, 12:00 PM EDT
In force: 6 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Warren County, NJ, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 135 km from the middle of the area, began a volume at 09:37 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

Time	Report	Where	Remark
Jul 1, 5:45 AM EDT	FLASH FLOOD	Bangor, PA	MULTIPLE REPORTS OF FLOODING IN BANGOR BOROUGH. SEVERAL ROADS UNDER WATER WITH ROAD CLOSURES.
Jul 1, 7:00 AM EDT	FLASH FLOOD	Bangor, PA	FIVE TO SIX HOMES UNDER WATER AND OTHERS WITH STRUCTURAL DAMAGE DUE TO FLASH FLOODING.
Jul 1, 7:00 AM EDT	FLASH FLOOD	East Bangor, PA	HIGH WATER AND SEVERAL REPORTS OF DAMAGE TO HOMES DUE TO FLASH FLOODING.

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 9.6 hours before the alert went out and 185 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: 358 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 465 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

029 
WGUS51 KPHI 010937
FFWPHI
NJC041-PAC089-095-011230-
/O.NEW.KPHI.FF.W.0029.130701T0937Z-130701T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
537 AM EDT MON JUL 1 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL WARREN COUNTY...
  EAST CENTRAL MONROE COUNTY...
  NORTHEASTERN NORTHAMPTON COUNTY...

* UNTIL 830 AM EDT...

* AT 535 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES   
  AND RAIN GAGE REPORTS INDICATED VERY HEAVY RAIN FROM SHOWERS AND   
  THUNDERSTORMS OVER EAST CENTRAL MONROE...NORTH CENTRAL WARREN AND  
  NORTHEASTERN NORTHAMPTON COUNTIES. RAIN GAGE REPORTS INDICATED UP TO
  2.40 INCHES OF RAIN HAS FALLEN IN AN HOUR ACROSS FAR WESTERN WARREN
  COUNTY.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE WARNED 
AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. NEVER ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR IN AN
AUTOMOBILE. TURN AROUND DON'T DROWN!

&&

LAT...LON 4113 7506 4109 7503 4110 7500 4109 7499
      4109 7497 4107 7494 4082 7512 4090 7527
      4115 7509

$$

FORECASTER: GORSE

3 follow-up statements

596 
WGUS51 KPHI 011215
FFWPHI
NJC041-PAC089-095-011430-
/O.EXT.KPHI.FF.W.0029.000000T0000Z-130701T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
815 AM EDT MON JUL 1 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL WARREN COUNTY...
  EAST CENTRAL MONROE COUNTY...
  NORTHEASTERN NORTHAMPTON COUNTY...

* UNTIL 1030 AM EDT...

* AT 805 AM EDT...RAIN CONTINUED OVER PORTIONS OF THE WARNED AREA.   
  EMERGENCY OFFICIALS FROM NORTHAMPTON COUNTY REPORTED SEVERAL ROADS 
  UNDER WATER IN BANGOR AND EAST BANGOR. IN ADDITION, FIVE TO SIX    
  HOMES HAVE TAKEN ON WATER AND HAVE SUSTAINED STRUCTURAL DAMAGE.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RURAL AREAS
  OF EAST CENTRAL MONROE...NORTH CENTRAL WARREN AND NORTHEASTERN
  NORTHAMPTON COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

&&

LAT...LON 4113 7506 4109 7503 4110 7500 4109 7499
      4109 7497 4107 7494 4082 7512 4090 7527
      4115 7509

$$

KRUZDLO

028 
WGUS51 KPHI 011414
FFWPHI
NJC041-PAC089-095-011600-
/O.EXT.KPHI.FF.W.0029.000000T0000Z-130701T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1014 AM EDT MON JUL 1 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL WARREN COUNTY...
  EAST CENTRAL MONROE COUNTY...
  NORTHEASTERN NORTHAMPTON COUNTY...

* UNTIL NOON EDT...

* AT 1012 AM EDT...EMERGENCY OFFICIALS FROM NORTHAMPTON COUNTY       
  REPORTED THAT WHILE CONDITIONS WERE SLOWLY IMPROVING, ROADS WERE   
  STILL CLOSED IN BANGOR AND EAST BANGOR. FOR THIS REASON, THE        
  WARNING HAS BEEN EXTENDED THROUGH 1200 PM. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RURAL AREAS
  OF EAST CENTRAL MONROE...NORTH CENTRAL WARREN AND NORTHEASTERN
  NORTHAMPTON COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

&&

LAT...LON 4113 7506 4109 7503 4110 7500 4109 7499
      4109 7497 4107 7494 4082 7512 4090 7527
      4115 7509

$$

KRUZDLO

894 
WGUS71 KPHI 011559
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1159 AM EDT MON JUL 1 2013

NJC041-PAC089-095-011608-
/O.EXP.KPHI.FF.W.0029.000000T0000Z-130701T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-MONROE PA-NORTHAMPTON PA-
1159 AM EDT MON JUL 1 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT NOON EDT FOR NORTHEASTERN
NORTHAMPTON...EAST CENTRAL MONROE AND NORTH CENTRAL WARREN
COUNTIES...

THE WATERS FROM THE EARLIER HEAVY RAINS ARE RECEDING AND NO LONGER 
POSE A THREAT TO LIFE OR PROPERTY. THEREFORE...THE FLASH FLOOD 
WARNING WILL BE ALLOWED TO EXPIRE.

MORE RAIN IS EXPECTED THIS AFTERNOON. ADDITIONAL WARNINGS ARE 
POSSIBLE. REMAIN VIGILANT.

REMEMBER, DRIVING INTO FLOOD WATERS COULD PUT YOUR LIFE AT RISK AND 
COST YOU THOUSANDS OF DOLLARS IN VEHICLE REPAIRS. FLOOD WATERS MAY 
BE DEEPER THAN YOU THINK. TURN AROUND AND FIND AN ALTERNATE ROUTE.

LAT...LON 4113 7506 4109 7503 4110 7500 4109 7499
      4109 7497 4107 7494 4082 7512 4090 7527
      4115 7509

$$

KRUZDLO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 4:07 AM EDT	Special Weather Statement	PHI	Sussex	38 min
Jul 1, 6:49 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Sussex, Warren	4 hr
Jul 1, 7:09 AM EDT	Areal Flood Advisory	PHI	Cumberland, Salem	4 hr
Jul 1, 7:47 AM EDT	Special Weather Statement	PHI	Hunterdon, Somerset	58 min
Jul 1, 8:03 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset	4 hr
Jul 1, 8:07 AM EDT	Flash Flood Warning	PHI	Hunterdon	4 hr
Jul 1, 8:25 AM EDT	Flash Flood Warning	PHI	Sussex	4 hr
Jul 1, 8:39 AM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Morris, Somerset	66 min
Jul 1, 8:55 AM EDT	Flash Flood Warning	PHI	Morris, Somerset, Sussex, Warren	4 hr
Jul 1, 10:30 AM EDT	River Flood Warning	PHI	Hunterdon, Somerset	5 hr
Jul 1, 10:52 AM EDT	Areal Flood Warning	PHI	Hunterdon, Morris, Somerset	13 hr
Jul 1, 12:05 PM EDT	Areal Flood Advisory	PHI	Monmouth, Ocean	4 hr
Jul 1, 12:28 PM EDT	River Flood Warning	PHI	Burlington	40 hr
Jul 1, 12:36 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more	4 hr
Jul 1, 2:14 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	4 hr
Jul 1, 5:38 PM EDT	River Flood Warning	PHI	Somerset	4 hr
Jul 1, 2:26 AM EDT	Areal Flood Advisory	PHI	Berks, Lehigh	3 hr
Jul 1, 3:33 AM EDT	Special Weather Statement	PHI	Carbon	42 min
Jul 1, 3:50 AM EDT	Areal Flood Advisory	PHI	Carbon, Monroe, Northampton	3 hr
Jul 1, 5:55 AM EDT	Areal Flood Advisory	PHI	Chester	3 hr
Jul 1, 6:58 AM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Montgomery	4 hr
Jul 1, 7:52 AM EDT	Flash Flood Warning	PHI	Bucks, Lehigh, Montgomery, Northampton	4 hr
Jul 1, 8:38 AM EDT	Areal Flood Warning	PHI	Chester	6 hr
Jul 1, 9:35 AM EDT	Areal Flood Warning	PHI	Bucks	6 hr
Jul 1, 11:57 AM EDT	River Flood Warning	PHI	Chester	2 hr
Jul 1, 1:56 PM EDT	Areal Flood Warning	PHI	Montgomery	6 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2013 Flash Flood Warnings in New Jersey, 2013 Every flash flood warning in 2013

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.