Alert archive / Maryland / Special Weather Statements in 2017

Special Weather Statement, NWS Philadelphia/Mount Holly

July 4, 2017Caroline County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 4, 2017, 4:15 PM EDT for Caroline County, Maryland. It was in force for 60 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 4, 2017, 4:15 PM EDT (20:15 UTC)
Expired: Jul 4, 2017, 5:15 PM EDT
In force: 60 min
Issued by: NWS Philadelphia/Mount Holly

County Caroline County, MD

The radar

The Dover AFB radar (KDOX), 45 km from the middle of the area, began a volume at 20:18 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, 8.3 hours before the alert went out and 128 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1899 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

826 
WWUS81 KPHI 042015
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
415 PM EDT TUE JUL 4 2017

MDZ015-020-042115-
Queen Anne's-Caroline-
415 PM EDT TUE JUL 4 2017

...A STRONG THUNDERSTORM WILL AFFECT EASTERN QUEEN ANNE'S AND 
NORTHERN CAROLINE COUNTIES...

At 413 PM EDT, a strong thunderstorm was located near Greensboro, 
and it was building westward.

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

Locations impacted include...
Denton, Greensboro, Oakland, Ridgely, Goldsboro, Queen Anne,
Jumptown, Hope, Hillsboro, Henderson, Marydel, Templeville and
Barclay.

Torrential rainfall is also occurring with this storm, 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 3918 7596 3914 7575 3883 7572 3891 7595
      3892 7595 3893 7601
TIME...MOT...LOC 2013Z 099DEG 3KT 3901 7583 

$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 2:07 PM EDT	Special Weather Statement	PHI	Cumberland	23 min
Jul 4, 2:23 PM EDT	Special Weather Statement	PHI	Cumberland	37 min
Jul 4, 2:44 PM EDT	Areal Flood Advisory	PHI	Cumberland	2 hr
Jul 4, 2:57 PM EDT	Special Weather Statement	PHI	Cumberland	33 min
Jul 4, 3:15 PM EDT	Flash Flood Warning	PHI	Cumberland	4 hr
Jul 4, 3:33 PM EDT	Special Weather Statement	PHI	Cumberland	57 min
Jul 4, 4:18 PM EDT	Areal Flood Advisory	PHI	Caroline, Queen Anne's	4 hr
Jul 4, 5:38 PM EDT	Special Weather Statement	PHI	Cecil	37 min
Jul 4, 3:06 PM EDT	Special Weather Statement	PHI	Kent	54 min
Jul 4, 3:51 PM EDT	Areal Flood Advisory	PHI	Kent, Sussex	4 hr
Jul 4, 3:55 PM EDT	Special Weather Statement	PHI	Kent	65 min
Jul 4, 4:34 PM EDT	Special Weather Statement	PHI	Sussex	56 min
Jul 4, 4:54 PM EDT	Areal Flood Advisory	PHI	Sussex	4 hr

Nearby

Special Weather Statements in Maryland, 2017 Every special weather statement in 2017

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.