Alert archive / Delaware / Flash Flood Warnings in 2013

Flash Flood Warning 3, NWS Philadelphia/Mount Holly

June 7, 2013Kent County, New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 7, 2013, 5:52 PM EDT for Kent County, New Castle County, Delaware. It was in force for 7 hr. 1 report 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
Jun 7, 2013, 5:52 PM EDT (21:52 UTC)
Expired
Jun 8, 2013, 1:09 AM EDT
In force
7 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Kent County, DE, New Castle County, DE

The radar

The Dover AFB radar (KDOX), 39 km from the middle of the area, began a volume at 21:54 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

TimeReportWhereRemark
Jun 7, 8:09 PM EDTFLASH FLOODDover, DESALISBURY ROAD IN DOVER AND SEVERAL ROADS IN NEW CASTLE COUNTY HAVE REPORTED FLOODING.

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

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.9 hours before the alert went out and 61 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, Phillips Aaf/Abe, MD at 12:00Z on 2013-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 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, Phillips Aaf/Abe, MD at 12:00Z on 2013-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 246 square meters per square second.19395878Sfc1 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
17 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
483 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
246 m²/s²
0-3 km storm-relative helicity
268 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.

723 
WGUS51 KPHI 072152
FFWPHI
DEC001-003-080145-
/O.NEW.KPHI.FF.W.0003.130607T2152Z-130608T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
552 PM EDT FRI JUN 7 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN NEW CASTLE COUNTY...
  KENT COUNTY...

* UNTIL 945 PM EDT...

* AT 545 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
VERY HEAVY RAIN OVER KENT AND SOUTHEASTERN NEW CASTLE COUNTIES.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DOVER.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO 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!

MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO 
CROSS WATER COVERED BRIDGES...DIPS...OR LOW WATER CROSSINGS. TURN 
AROUND...DON'T DROWN! NEVER TRY TO CROSS A FLOWING STREAM...EVEN A 
SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

&&

LAT...LON 3885 7572 3915 7575 3943 7554 3940 7551
      3937 7550 3934 7546 3923 7538 3918 7538
      3914 7540 3906 7539 3904 7536

$$

KRUZDLO
2 follow-up statements
159 
WGUS51 KPHI 080132
FFWPHI
DEC001-003-080545-
/O.EXT.KPHI.FF.W.0003.000000T0000Z-130608T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
932 PM EDT FRI JUN 7 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN NEW CASTLE COUNTY...
  KENT COUNTY...

* UNTIL 145 AM EDT...

* AT 930 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
MORE RAIN, ASSOCIATED WITH POST TROPICAL CYCLONE ANDREA, MOVING BACK 
INTO THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DOVER.

ADDITIONAL RAINFALL AMOUNTS UP TO ONE INCH ARE POSSIBLE. THIS SAME 
AREA HAS SEEN RAINFALL AMOUNTS IN EXCESS OF FOUR INCHES EARLIER 
TODAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. TURN AROUND...DON'T DROWN! NEVER TRY
TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE
RISING WATER MOVE UP TO HIGHER GROUND.

&&

LAT...LON 3885 7572 3915 7575 3943 7554 3940 7551
      3937 7550 3934 7546 3923 7538 3918 7538
      3914 7540 3906 7539 3904 7536

$$

KRUZDLO
120 
WGUS71 KPHI 080509
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
109 AM EDT SAT JUN 8 2013

DEC001-003-080519-
/O.CAN.KPHI.FF.W.0003.000000T0000Z-130608T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE DE-KENT DE-
109 AM EDT SAT JUN 8 2013

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR KENT AND
SOUTHEASTERN NEW CASTLE COUNTIES...

WITH ONLY LOW LYING ROAD AND POOR DRAINAGE FLOODING STILL BEING 
REPORTED, THIS WARNING WILL BE REPLACED WITH AN ADVISORY. 

LAT...LON 3885 7572 3915 7575 3943 7554 3940 7551
      3937 7550 3934 7546 3923 7538 3918 7538
      3914 7540 3906 7539 3904 7536

$$

KRUZDLO

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 8:42 PM EDTRip Current StatementPHISussex48 hr
Jun 7, 10:02 AM EDTAreal Flood AdvisoryPHINew Castle4 hr
Jun 7, 11:08 AM EDTRiver Flood WarningPHINew Castle15 hr
Jun 7, 1:40 PM EDTAreal Flood AdvisoryPHINew Castle6 hr
Jun 7, 1:51 PM EDTAreal Flood WarningPHINew Castle16 hr
Jun 7, 2:17 PM EDTAreal Flood AdvisoryPHIKent6 hr
Jun 7, 2:44 PM EDTRiver Flood WarningPHINew Castle11 hr
Jun 7, 2:52 PM EDTRiver Flood WarningPHINew Castle8 hr
Jun 7, 3:45 PM EDTSpecial Weather StatementPHIKent, Sussex60 min
Jun 7, 5:11 PM EDTSpecial Weather StatementPHIKent64 min
Jun 7, 5:23 PM EDTSevere Thunderstorm WarningPHISussex52 min

Nearby

Flash Flood Warnings in Delaware, 2013Every 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.