Alert archive / Maryland / Special Weather Statements in 2015

Special Weather Statement, NWS Philadelphia/Mount Holly

August 4, 2015Kent County, Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 4, 2015, 5:18 AM EDT for Kent County, Queen Anne's County, Maryland. It was in force for 57 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: Aug 4, 2015, 5:18 AM EDT (09:18 UTC)
Expired: Aug 4, 2015, 6:15 AM EDT
In force: 57 min
Issued by: NWS Philadelphia/Mount Holly

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

The radar

The Dover AFB radar (KDOX), 70 km from the middle of the area, began a volume at 09:19 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, 9.3 hours before the alert went out and 109 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: 627 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 1863 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

703 
WWUS81 KPHI 040918
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
518 AM EDT TUE AUG 4 2015
 
DEZ002-MDZ008-012-015-019-020-041015-
KENT-CECIL-CAROLINE-TALBOT-KENT-QUEEN ANNE'S-
518 AM EDT TUE AUG 4 2015

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN KENT...
QUEEN ANNE'S...NORTHERN CAROLINE...KENT...SOUTHEASTERN CECIL AND
NORTHEASTERN TALBOT COUNTIES...

AT 517 AM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM LOCHEARN TO LOCUST POINT TO NEAR SOUTH GATE...AND
MOVING EAST AT 50 MPH.

WIND GUSTS UP TO 50 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
CENTERVILLE...CHESTERTOWN...DENTON...CENTREVILLE...GREENSBORO...
OAKLAND...RIDGELY...ROCK HALL...CHURCH HILL...CECILTON...
MILLINGTON...SUDLERSVILLE...BETTERTON...GOLDSBORO...QUEEN ANNE...OLD
TOWN...KENNEDYVILLE...STARR...WARWICK AND HOPE.

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

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3898 7628 3897 7622 3900 7617 3903 7624
      3909 7623 3915 7628 3926 7622 3929 7617
      3932 7618 3941 7601 3947 7599 3948 7578
      3886 7573 3894 7619 3896 7624 3895 7626
      3896 7635
TIME...MOT...LOC 0917Z 275DEG 42KT 3935 7671 3926 7659 3909 7663 
$$

HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 2:07 AM EDT	Special Weather Statement	PHI	Hunterdon, Mercer, Middlesex, Somerset	53 min
Aug 4, 2:30 AM EDT	Special Weather Statement	PHI	Morris, Warren	60 min
Aug 4, 2:56 AM EDT	Special Weather Statement	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Somerset	64 min
Aug 4, 3:33 AM EDT	Special Marine Warning	PHI		57 min
Aug 4, 3:36 AM EDT	Special Weather Statement	PHI	Morris	24 min
Aug 4, 4:12 AM EDT	Special Weather Statement	PHI	Gloucester	63 min
Aug 4, 4:20 AM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	33 min
Aug 4, 5:25 AM EDT	Special Weather Statement	PHI	Monmouth	65 min
Aug 4, 10:53 AM EDT	Rip Current Statement	PHI	Cape May	4 hr
Aug 4, 12:06 AM EDT	Special Weather Statement	PHI	Chester	54 min
Aug 4, 12:45 AM EDT	Special Weather Statement	PHI	Bucks, Chester, Montgomery, Philadelphia	60 min
Aug 4, 1:23 AM EDT	Special Weather Statement	PHI	Berks	37 min
Aug 4, 1:31 AM EDT	Severe Thunderstorm Warning	PHI	Berks	44 min
Aug 4, 1:42 AM EDT	Special Weather Statement	PHI	Carbon	48 min
Aug 4, 1:54 AM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	50 min
Aug 4, 5:37 AM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	34 min
Aug 4, 6:11 PM EDT	Special Weather Statement	PHI	Sussex	64 min
Aug 4, 6:20 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	20 min

Nearby

Special Weather Statements in Maryland, 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.