Alert archive / Maryland / Special Weather Statements in 2015

Special Weather Statement, NWS Philadelphia/Mount Holly

June 14, 2015Salem County, New Jersey; 4 counties in Maryland; Kent County, New Castle County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Jun 14, 2015, 7:21 PM EDT for Salem County, New Jersey; 4 counties in Maryland; Kent County, New Castle County, Sussex County, Delaware. It was in force for 39 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: Jun 14, 2015, 7:21 PM EDT (23:21 UTC)
Expired: Jun 14, 2015, 8:00 PM EDT
In force: 39 min
Issued by: NWS Philadelphia/Mount Holly

Counties Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 43 km from the middle of the area, began a volume at 23:21 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

Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.4 hours before the alert went out and 139 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: 653 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1118 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 62 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.

860 
WWUS81 KPHI 142321
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
721 PM EDT SUN JUN 14 2015
 
DEZ001>003-MDZ008-012-015-019-020-NJZ016-017-021-150000-
KENT-NEW CASTLE-INLAND SUSSEX-CECIL-QUEEN
ANNE'S-CAROLINE-TALBOT-QUEEN
ANNE'S-TALBOT-KENT-KENT-CECIL-CUMBERLAND-SALEM-GLOUCESTER-
721 PM EDT SUN JUN 14 2015

... LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHERN DELMARVA ...

AT 719 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM NEAR WOODLAWN TO HAMBLETON...AND MOVING EAST AT 55
MPH.

WIND GUSTS UP TO 30 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
DOVER...NEWARK...MIDDLETOWN...EASTON...ELKTON...GEORGETOWN...
CENTERVILLE...CALVERT...PENNSVILLE...SMYRNA...MILFORD...CARNEYS
POINT...SEAFORD...NEW CASTLE...CHESTERTOWN...SALEM...DENTON...
CENTREVILLE...LAUREL AND NORTH EAST.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 3851 7570 3865 7571 3871 7584 3857 7602
      3864 7615 3933 7618 3942 7600 3952 7598
      3955 7609 3971 7619 3970 7552 3966 7553
      3971 7549 3971 7532 3933 7532 3934 7533
      3930 7543 3907 7541 3900 7533 3848 7533
TIME...MOT...LOC 2319Z 269DEG 49KT 3961 7610 3871 7609 
$$

SFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 4:00 PM EDT	Special Weather Statement	PHI	Atlantic	30 min
Jun 14, 4:11 PM EDT	Severe Thunderstorm Warning	PHI	Salem	38 min
Jun 14, 4:30 PM EDT	Special Weather Statement	PHI	Atlantic, Camden	30 min
Jun 14, 7:55 PM EDT	Special Marine Warning	PHI		50 min
Jun 14, 4:40 PM EDT	Areal Flood Advisory	PHI	Chester	3 hr
Jun 14, 6:24 PM EDT	Special Weather Statement	PHI	Berks, Chester	51 min
Jun 14, 6:35 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester	55 min
Jun 14, 6:45 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	4 hr
Jun 14, 7:16 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	44 min
Jun 14, 4:54 AM EDT	Areal Flood Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's	4 hr
Jun 14, 4:06 PM EDT	Special Weather Statement	PHI	Cecil	24 min
Jun 14, 6:32 PM EDT	Special Weather Statement	PHI	Cecil, Kent, Queen Anne's, Talbot	28 min
Jun 14, 3:21 PM EDT	Special Weather Statement	PHI	Sussex	24 min
Jun 14, 3:26 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	36 min
Jun 14, 4:32 PM EDT	Special Weather Statement	PHI	Sussex	28 min
Jun 14, 5:06 PM EDT	Special Weather Statement	PHI	Sussex	24 min
Jun 14, 5:15 PM EDT	Areal Flood Advisory	PHI	Kent, Sussex	5 hr
Jun 14, 5:29 PM EDT	Special Weather Statement	PHI	Sussex	31 min

Nearby

Special Weather Statements in Maryland, 2015 Special Weather Statements in Delaware, 2015 Special Weather Statements in New Jersey, 2015 Every special weather statement in 2015

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.