Alert archive / Maryland / Special Weather Statements in 2019

Special Weather Statement, NWS Philadelphia/Mount Holly

August 2, 2019Kent County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 2, 2019, 5:11 PM EDT for Kent County, Maryland. It was in force for 34 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 2, 2019, 5:11 PM EDT (21:11 UTC)
Expired: Aug 2, 2019, 5:45 PM EDT
In force: 34 min
Issued by: NWS Philadelphia/Mount Holly

County Kent County, MD

The radar

The Dover AFB radar (KDOX), 79 km from the middle of the area, began a volume at 21:15 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 12:00Z, 9.2 hours before the alert went out and 117 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: 457 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 870 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -54 m²/s²
0-3 km storm-relative helicity: -36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

453 
WWUS81 KPHI 022111
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
511 PM EDT Fri Aug 2 2019

MDZ008-012-015-022145-
Queen Anne's-Cecil-Kent-
511 PM EDT Fri Aug 2 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN QUEEN ANNE'S...KENT AND
SOUTHEASTERN CECIL COUNTIES...

At 510 PM EDT, a strong thunderstorm was located over Chestertown, or
14 miles north of Centerville, moving northeast at 10 mph.

Wind gusts up to 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Chestertown, Cecilton, Betterton, Newtown, Morgnec, Crumpton,
Kennedyville, Langford, Galena and Kingstown.

Torrential rainfall is also occurring, 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 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3926 7622 3928 7620 3929 7617 3932 7618
      3934 7616 3933 7614 3937 7611 3937 7606
      3941 7602 3941 7580 3916 7597 3916 7628
TIME...MOT...LOC 2110Z 202DEG 8KT 3925 7606 

$$

Gorse

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 5:49 PM EDT	Special Weather Statement	PHI	Carbon	26 min
Aug 2, 5:57 PM EDT	Special Weather Statement	PHI	Berks	33 min
Aug 2, 7:01 PM EDT	Special Weather Statement	PHI	Carbon	29 min
Aug 2, 7:03 PM EDT	Special Weather Statement	PHI	Berks	27 min
Aug 2, 7:39 PM EDT	Special Weather Statement	PHI	Berks	36 min
Aug 2, 7:46 PM EDT	Areal Flood Advisory	PHI	Berks	108 min

Nearby

Special Weather Statements in Maryland, 2019 Every special weather statement in 2019

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.