Alert archive / Maryland / Special Weather Statements in 2019

Special Weather Statement, NWS Philadelphia/Mount Holly

August 9, 2019Wicomico County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 9, 2019, 5:16 PM EDT for Wicomico County, Maryland. It was in force for 29 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 9, 2019, 5:16 PM EDT (21:16 UTC)
Expired
Aug 9, 2019, 5:45 PM EDT
In force
29 min
Issued by
NWS Philadelphia/Mount Holly

County Wicomico County, MD

The radar

The Dover AFB radar (KDOX), 35 km from the middle of the area, began a volume at 21:17 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, 9.3 hours before the alert went out and 69 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, Wallops Is Stn, VA at 12:00Z on 2019-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 592 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, Wallops Is Stn, VA at 12:00Z on 2019-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -53 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
592 J/kg
Mixed-layer CIN
-118 J/kg
Mixed-layer LCL
1427 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
-53 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted.

449 
WWUS81 KPHI 092116
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
516 PM EDT Fri Aug 9 2019

DEZ003-092145-
Inland Sussex-
516 PM EDT Fri Aug 9 2019

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN SUSSEX COUNTY...

At 516 PM EDT, a strong thunderstorm was located near Sharptown, or
12 miles east of Hurlock, moving east at 25 mph.

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

Locations impacted include...
Laurel, Sycamore and Bethel. 

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 3851 7570 3859 7570 3869 7544 3845 7544
      3845 7549
TIME...MOT...LOC 2116Z 265DEG 21KT 3857 7566 

$$

MPS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 2:34 PM EDTSpecial Weather StatementPHIHunterdon26 min
Aug 9, 3:36 PM EDTSpecial Weather StatementPHICumberland24 min
Aug 9, 3:58 PM EDTSpecial Weather StatementPHIAtlantic32 min
Aug 9, 4:12 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland33 min
Aug 9, 2:38 PM EDTSpecial Weather StatementPHITalbot37 min
Aug 9, 3:28 PM EDTSpecial Weather StatementPHIWicomico47 min
Aug 9, 5:04 PM EDTSpecial Weather StatementPHIWicomico11 min

Nearby

Special Weather Statements in Maryland, 2019Every 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.