Alert archive / Maryland / Coastal Flood Statements in 2012

Coastal Flood Statement 10, NWS Philadelphia/Mount Holly

May 7, 20124 counties in Maryland

NWS Philadelphia/Mount Holly issued this coastal flood statement at May 7, 2012, 3:39 PM EDT for 4 counties in Maryland. It took effect at May 8, 2012, 6:00 AM EDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
May 7, 2012, 3:39 PM EDT (19:39 UTC)
In effect from
May 8, 2012, 6:00 AM EDT
Expired
May 8, 2012, 10:00 AM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 55 km from the middle of the area, began a volume at 19:40 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.7 hours before the alert went out and 117 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, Washington/Dulle, VA at 12:00Z on 2012-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Washington/Dulle, VA at 12:00Z on 2012-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
634 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
182 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.

856 
WHUS41 KPHI 071939
CFWPHI

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
339 PM EDT MON MAY 7 2012

DEZ003-004-NJZ012>014-020-022>027-080500-
/O.CON.KPHI.CF.Y.0006.120508T0000Z-120508T0500Z/
INLAND SUSSEX-DELAWARE BEACHES-MIDDLESEX-WESTERN MONMOUTH-
EASTERN MONMOUTH-OCEAN-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-
339 PM EDT MON MAY 7 2012

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 8 PM THIS
EVENING TO 1 AM EDT TUESDAY...

* TIMING...HIGH TIDE OCCURS ON THE OCEAN AND RARITAN BAY BETWEEN 
  900 PM AND 1130 PM. HIGH TIDES IN THE BACK BAYS AND THE LOWER 
  DELAWARE BAY WILL OCCUR LATER. 

* IMPACTS...AREAS PRONE TO MINOR TIDAL FLOODING WILL SEE MINOR 
  FLOODING. SOME ROADWAYS MAY BE CLOSED AROUND THE TIME OF HIGH 
  TIDE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A COASTAL FLOOD ADVISORY INDICATES THAT MINOR TIDAL FLOODING IS
ANTICIPATED. MINOR TIDAL FLOODING OFTEN RESULTS IN SOME ROADS
CLOSURES. USUALLY...THE MOST VULNERABLE ROADWAYS WILL FLOOD.

DO NOT LEAVE YOUR VEHICLE AT A LOCATION THAT IS PRONE TO TIDAL
FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOOD WATERS. THE
WATER MAY BE DEEPER THAN YOU THINK IT IS. YOU WILL BE PUTTING
YOURSELF IN DANGER AND YOUR VEHICLE MAY BE DAMAGED...LEADING TO
COSTLY REPAIR.

FOR A LIST OF THE IMPACT OF DIFFERENT TIDE HEIGHTS IN YOUR COUNTY
PLEASE GO TO WWW.WEATHER.GOV/PHI/TIDES.HTM (ALL IN LOWER CASE).

&&

$$

MDZ012-015-019-020-080500-
/O.NEW.KPHI.CF.S.0010.120508T1000Z-120508T1400Z/
KENT MD-QUEEN ANNES-TALBOT-CAROLINE-
339 PM EDT MON MAY 7 2012

...POCKETS OF MINOR TIDAL FLOODING POSSIBLE AROUND THE TIME OF HIGH
TIDE TUESDAY MORNING...
 
* LOCATION...ALONG CHESAPEAKE BAY AND TIDAL SECTIONS OF WATERWAYS
  THAT DRAIN INTO THE BAY.

* COASTAL FLOODING...POCKETS OF MINOR TIDAL FLOODING.

* TIMING...HIGH TIDES TUESDAY MORNING OCCUR AT CAMBRIDGE AT 624
  AM AND AT TOLCHESTER BEACH AT 918 AM. 

* IMPACTS...THE MOST VULNERABLE LOCALES AND ROADWAYS COULD
  EXPERIENCE SPOTTY MINOR TIDAL FLOODING. 

$$
  
DEZ001-002-NJZ016>019-021-PAZ070-071-080500-
/O.CON.KPHI.CF.S.0009.120508T0400Z-120508T0800Z/
NEW CASTLE-KENT-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-
CUMBERLAND-DELAWARE-PHILADELPHIA-
339 PM EDT MON MAY 7 2012

...SPOTTY MINOR TIDAL FLOODING AROUND THE TIME OF HIGH TIDE EARLY
TUESDAY MORNING...
 
* LOCATION...TIDAL SECTIONS OF THE DELAWARE RIVER AS WELL AS UPPER
  DELAWARE BAY.

* COASTAL FLOODING...SOME SPOTTY MINOR TIDAL FLOODING.

* TIMING...HIGH TIDE OCCURS AT REEDY POINT DELAWARE AROUND 110 
  AM TUESDAY MORNING. HIGH TIDE IN PHILADELPHIA OCCURS AROUND 
  345 AM TUESDAY MORNING. 

* IMPACTS...THE MOST VULNERABLE LOCALES AND ROADWAYS COULD
  EXPERIENCE SPOTTY MINOR TIDAL FLOODING.

$$
2 follow-up statements
142 
WHUS41 KPHI 080418
CFWPHI

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1218 AM EDT TUE MAY 8 2012

DEZ003-004-NJZ012>014-020-022>027-080530-
/O.CAN.KPHI.CF.Y.0006.000000T0000Z-120508T0500Z/
INLAND SUSSEX-DELAWARE BEACHES-MIDDLESEX-WESTERN MONMOUTH-
EASTERN MONMOUTH-OCEAN-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-
1218 AM EDT TUE MAY 8 2012

...COASTAL FLOOD ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE
COASTAL FLOOD ADVISORY.

THE EVENING HIGH TIDE HAS PASSED AND MINOR TIDAL FLOODING IS NO
LONGER ANTICIPATED.

$$

DEZ001-002-NJZ016>019-021-PAZ070-071-080800-
/O.CON.KPHI.CF.S.0009.000000T0000Z-120508T0800Z/
NEW CASTLE-KENT-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-
CUMBERLAND-DELAWARE-PHILADELPHIA-
1218 AM EDT TUE MAY 8 2012

...SPOTTY MINOR TIDAL FLOODING AROUND THE TIME OF HIGH TIDE EARLY
THIS MORNING...

* LOCATION...TIDAL SECTIONS OF THE DELAWARE RIVER AS WELL AS 
  UPPER DELAWARE BAY. 

* COASTAL FLOODING...SOME SPOTTY MINOR TIDAL FLOODING.

* TIMING...HIGH TIDE OCCURS AT REEDY POINT DELAWARE AROUND 110 
  AM TUESDAY MORNING. HIGH TIDE IN PHILADELPHIA OCCURS AROUND 
  345 AM TUESDAY MORNING. 

* IMPACTS...THE MOST VULNERABLE LOCALES AND ROADWAYS COULD 
  EXPERIENCE SPOTTY MINOR TIDAL FLOODING. 



$$

MDZ012-015-019-020-081230-
/O.CON.KPHI.CF.S.0010.120508T1000Z-120508T1400Z/
KENT MD-QUEEN ANNES-TALBOT-CAROLINE-
1218 AM EDT TUE MAY 8 2012

...POCKETS OF MINOR TIDAL FLOODING AROUND THE TIME OF HIGH TIDE
THIS MORNING...

* LOCATION...ALONG CHESAPEAKE BAY AND TIDAL SECTIONS OF 
  WATERWAYS THAT DRAIN INTO THE BAY. 

* COASTAL FLOODING...POCKETS OF MINOR TIDAL FLOODING.

* TIMING...HIGH TIDES TUESDAY MORNING OCCUR AT CAMBRIDGE AT 624 
  AM AND AT TOLCHESTER BEACH AT 918 AM. 

* IMPACTS...THE MOST VULNERABLE LOCALES AND ROADWAYS COULD 
  EXPERIENCE SPOTTY MINOR TIDAL FLOODING. 



$$
336 
WHUS41 KPHI 080756
CFWPHI

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
356 AM EDT TUE MAY 8 2012

DEZ001-002-NJZ016>019-021-PAZ070-071-080900-
/O.CAN.KPHI.CF.S.0009.000000T0000Z-120508T0800Z/
NEW CASTLE-KENT-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-
CUMBERLAND-DELAWARE-PHILADELPHIA-
356 AM EDT TUE MAY 8 2012

...THE MORNING HIGH TIDE HAS PASSED AND MINOR TIDAL FLOODING IS NO
LONGER EXPECTED.

$$

MDZ012-015-019-020-081400-
/O.CON.KPHI.CF.S.0010.120508T1000Z-120508T1400Z/
KENT MD-QUEEN ANNES-TALBOT-CAROLINE-
356 AM EDT TUE MAY 8 2012

...PATCHY MINOR TIDAL FLOODING IS EXPECTED AROUND THE TIME OF HIGH TIDE...

* LOCATION...ALONG CHESAPEAKE BAY AND TIDAL SECTIONS OF 
  WATERWAYS THAT DRAIN INTO THE BAY. 

* COASTAL FLOODING...POCKETS OF MINOR TIDAL FLOODING.

* TIMING...HIGH TIDES TUESDAY MORNING OCCUR AT CAMBRIDGE AT 624 
  AM AND AT TOLCHESTER BEACH AT 918 AM. 

* IMPACTS...THE MOST VULNERABLE LOCALES AND ROADWAYS COULD 
  EXPERIENCE SPOTTY MINOR TIDAL FLOODING. 

* SEAS...AROUND 0 FOOT.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 3:59 AM EDTCoastal Flood StatementPHIKent, Queen Anne's, Talbot5 hr

Nearby

Coastal Flood Statements in Maryland, 2012Every coastal flood statement in 2012

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.