Alert archive / Maryland / Special Weather Statements in 2016

Special Weather Statement, NWS Philadelphia/Mount Holly

July 25, 2016Cecil County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 25, 2016, 9:06 PM EDT for Cecil County, Maryland. It was in force for 24 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
Jul 25, 2016, 9:06 PM EDT (01:06 UTC)
Expired
Jul 25, 2016, 9:30 PM EDT
In force
24 min
Issued by
NWS Philadelphia/Mount Holly

County Cecil County, MD

The radar

The Dover AFB radar (KDOX), 109 km from the middle of the area, began a volume at 01:08 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, 1.1 hours before the alert went out and 143 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 2016-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1204 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2016-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 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
1204 J/kg
Mixed-layer CIN
-83 J/kg
Mixed-layer LCL
1693 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted.

441 
WWUS81 KPHI 260106
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
906 PM EDT MON JUL 25 2016
 
MDZ008-PAZ101-102-260130-
CECIL-WESTERN CHESTER-EASTERN CHESTER-
906 PM EDT MON JUL 25 2016

...A STRONG THUNDERSTORM WITH FREQUENT LIGHTNING WILL AFFECT CECIL
AND SOUTHWESTERN CHESTER COUNTIES...

AT 905 PM EDT...A STRONG THUNDERSTORM WAS OVER RISING SUN...OR 10
MILES NORTH OF HAVRE DE GRACE...MOVING EAST AT 40 MPH.

WIND GUSTS UP TO 30 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

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.

LOCATIONS IMPACTED INCLUDE...
ELKTON...CALVERT...OXFORD...NORTH EAST...RISING SUN...CHARLESTOWN...
ROCK SPRINGS...PLEASANT HILL...BLAKE...ANDORA...GLEN ROY...
RICHARDSMERE...WOODLAWN...APPLETON...CHERRY HILL...BAY VIEW...
LOMBARD...OCTORARO...FARMINGTON AND BARKSDALE.

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

LAT...LON 3972 7623 3972 7614 3974 7612 3973 7610
      3979 7604 3973 7578 3972 7579 3962 7579
      3948 7578 3960 7613 3966 7617 3968 7621
TIME...MOT...LOC 0105Z 287DEG 36KT 3969 7609 
$$

GORSE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 8:03 PM EDTSpecial Marine WarningPHI87 min
Jul 25, 8:40 PM EDTSpecial Weather StatementPHISalem35 min
Jul 26, 9:41 AM EDTHeat AdvisoryPHICaroline, Queen Anne's, Talbot9 hr
Jul 26, 12:31 AM EDTSpecial Weather StatementPHISussex44 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.