Alert archive / Maryland / Coastal Flood Statements in 2012

Coastal Flood Statement 4, NWS Philadelphia/Mount Holly

April 1, 2012Caroline County, Queen Anne's County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this coastal flood statement at Apr 1, 2012, 8:43 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland. It took effect at Apr 2, 2012, 12:00 AM EDT. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Apr 1, 2012, 8:43 PM EDT (00:43 UTC)
In effect from
Apr 2, 2012, 12:00 AM EDT
Expired
Apr 2, 2012, 3:00 AM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly

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

The radar

The Dover AFB radar (KDOX), 52 km from the middle of the area, began a volume at 00:42 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 00:00Z, 0.7 hours before the alert went out and 119 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 00:00Z on 2012-04-02Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2012-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 326 square meters per square second.1939587897117Sfc1 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
1460 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
326 m²/s²
0-3 km storm-relative helicity
543 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.

461 
WHUS41 KPHI 020043
CFWPHI

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
843 PM EDT SUN APR 1 2012

MDZ015-019-020-020700-
/O.NEW.KPHI.CF.S.0004.120402T0400Z-120402T0700Z/
QUEEN ANNES-TALBOT-CAROLINE-
843 PM EDT SUN APR 1 2012

...SOME MINOR TIDAL FLOODING AFTER MIDNIGHT...

* LOCATION...THE MARYLAND EASTERN SHORE COUNTIES OF QUEEN ANNE'S
  AND TALBOT AND ALONG THE TIDAL TRIBUTARIES OF CAROLINE COUNTY.

* COASTAL FLOODING...AREAS OF MINOR TIDAL FLOODING.

* TIMING...FROM JUST AFTER MIDNIGHT UNTIL 300 AM EDT.

* IMPACTS...PLACES MOST PRONE TO TIDAL FLOODING WILL SEE MINOR
  FLOODING. A FEW ROADS MAY FLOOD. PLEASE MOVE YOUR VEHICLES OUT
  OF AREAS MOST PRONE TO TIDAL FLOODING AND DO NOT DRIVE ON ANY
  ROADS EXPERIENCING FLOODING.

$$

MPD

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 2, 3:08 AM EDTFrost AdvisoryPHICecil, Kent29 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.