Alert archive / Maryland / Special Weather Statements in 2016

Special Weather Statement, NWS Philadelphia/Mount Holly

February 13, 2016Kent County, Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Feb 13, 2016, 4:09 AM EST for Kent County, Queen Anne's County, Maryland. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Feb 13, 2016, 4:09 AM EST (09:09 UTC)
Expired
Feb 13, 2016, 5:00 AM EST
In force
51 min
Issued by
NWS Philadelphia/Mount Holly

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

The radar

The Dover AFB radar (KDOX), 71 km from the middle of the area, began a volume at 09:07 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, 9.2 hours before the alert went out and 102 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 2016-02-13Temperature 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 2016-02-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -37 square meters per square second.1939587897Sfc1 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
1679 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
-37 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

250 
WWUS81 KPHI 130909
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
409 AM EST SAT FEB 13 2016
 
MDZ012-015-019-020-131000-
CAROLINE-TALBOT-KENT-QUEEN ANNE'S-
409 AM EST SAT FEB 13 2016

...A HEAVY SNOW SQUALL WILL AFFECT KENT...QUEEN ANNE'S...
NORTHEASTERN CAROLINE AND NORTH CENTRAL TALBOT COUNTIES...

* UNTIL 500 AM EST.

* AT 406 AM EST...A HEAVY SNOW SQUALL WAS ALONG A LINE EXTENDING
  FROM NEAR MIDDLE RIVER TO BROOKLYN PARK TO NEAR COLUMBIA...AND
  MOVING SOUTHEAST AT 40 MPH.

THIS SNOW SQUALL WILL BE NEAR...
  NEWTOWN AROUND 420 AM EST.
  CHESTERTOWN AND LANGFORD AROUND 425 AM EST.
  OLD TOWN AROUND 430 AM EST.
  ROCK HALL AND STEVENSVILLE AROUND 435 AM EST.
  CHURCH HILL...OVERTON...STARKEY CORNER AND CHESTER AROUND 440 AM
EST.
  GRASONVILLE AND HOPE AROUND 445 AM EST.
  CENTERVILLE AND CENTREVILLE AROUND 450 AM EST.
  WYE MILLS AND CARVILLE AROUND 455 AM EST.

OTHER LOCATIONS IMPACTED BY THIS DANGEROUS SQUALL INCLUDE
QUEENSTOWN...KINGSTOWN...STEVENSVILLE SOUTH...DOMINION AND HENDERSON.

THE SNOW SQUALL WILL CONTAIN HEAVY SNOW THAT WILL LAST FOR A BRIEF
PERIOD OF TIME. THIS WILL RESULT IN RAPID CHANGES IN THE VISIBILITY.
IN ADDITION, GUSTY NORTHWEST WINDS WILL ALSO ACCOMPANY THE SQUALL.

USE EXTRA CAUTION IF YOU MUST TRAVEL INTO OR THROUGH THIS DANGEROUS
SNOW SQUALL. RAPID CHANGES IN VISIBILITY AND POTENTIALLY SLICK ROADS
ARE LIKELY TO LEAD TO ACCIDENTS. CONSIDER DELAYING TRAVEL UNTIL THE
SQUALL PASSES YOUR LOCATION.

CONDITIONS CAN DETERIORATE RAPIDLY IN WINTER WEATHER SITUATIONS. BE
PREPARED FOR SNOW OR ICE COVERED ROADS. SLOW DOWN AND ALLOW EXTRA
TIME WHEN TRAVELING.

LAT...LON 3904 7631 3898 7628 3897 7622 3900 7617
      3903 7624 3909 7623 3915 7628 3926 7622
      3929 7617 3933 7618 3906 7575 3892 7601
      3889 7620 3896 7625 3891 7624 3894 7628
      3889 7629 3896 7631 3887 7636 3887 7637
TIME...MOT...LOC 0906Z 302DEG 35KT 3934 7632 3921 7660 3918 7691 
$$

ROBERTSON

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 13, 8:45 AM ESTSpecial Weather StatementPHIWarren75 min
Feb 13, 12:07 PM ESTSpecial Weather StatementPHIAtlantic, Burlington, Camden, Ocean68 min
Feb 13, 5:01 AM ESTSpecial Weather StatementPHICaroline, Talbot59 min
Feb 13, 5:39 AM ESTSpecial Weather StatementPHISussex66 min

Nearby

Special Weather Statements in Maryland, 2016Every special weather statement in 2016

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.