Alert archive / Maryland / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

September 8, 2018Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Sep 8, 2018, 2:19 AM EDT for Queen Anne's County, Maryland. It was in force for 41 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: Sep 8, 2018, 2:19 AM EDT (06:19 UTC)
Expired: Sep 8, 2018, 3:00 AM EDT
In force: 41 min
Issued by: NWS Philadelphia/Mount Holly

County Queen Anne's County, MD

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 6.3 hours before the alert went out and 101 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: 1088 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1125 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

065 
WWUS81 KPHI 080619
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
219 AM EDT SAT SEP 8 2018

MDZ012-015-080700-
Queen Anne's-Kent-
219 AM EDT SAT SEP 8 2018

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN QUEEN ANNE'S AND
SOUTHWESTERN KENT COUNTIES...

At 218 AM EDT, a strong thunderstorm was located near Overton, or 7
miles east of Gibson Island, moving southeast at 10 mph.

Winds up to 40 mph are possible with this storm.

Locations impacted include...
Centerville, Centreville, Rock Hall, Chester, Overton, Grasonville,
Stevensville, Queenstown, Stevensville South and Dominion.

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 3904 7631 3898 7628 3897 7622 3900 7617
      3903 7624 3909 7623 3917 7627 3909 7600
      3886 7618 3888 7620 3894 7621 3894 7624
      3896 7625 3894 7626 3891 7624 3894 7627
      3893 7629 3897 7635
TIME...MOT...LOC 0618Z 299DEG 10KT 3907 7629 

$$

MPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 8:32 PM EDT	Flash Flood Warning	PHI	Camden, Gloucester, Salem	2 hr
Sep 7, 10:41 PM EDT	Areal Flood Warning	PHI	Camden, Gloucester	8 hr
Sep 7, 11:19 PM EDT	Rip Current Statement	PHI	Atlantic, Cape May, Monmouth, Ocean	9 days
Sep 7, 11:20 PM EDT	Areal Flood Warning	PHI	Camden, Gloucester, Salem	4 hr
Sep 8, 1:21 AM EDT	Special Marine Warning	PHI		54 min
Sep 8, 1:27 AM EDT	Special Marine Warning	PHI		63 min
Sep 8, 2:17 AM EDT	Special Marine Warning	PHI		42 min
Sep 8, 2:43 AM EDT	Areal Flood Advisory	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	6 hr
Sep 8, 3:34 AM EDT	Flood Watch	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Hunterdon and 9 more	60 hr
Sep 8, 4:29 AM EDT	Areal Flood Advisory	PHI	Burlington	4 hr
Sep 8, 5:31 AM EDT	Coastal Flood Watch	PHI	Cape May	11 hr
Sep 8, 5:31 AM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Cumberland, Middlesex, Monmouth, Ocean and 1 more	21 hr
Sep 8, 5:31 AM EDT	Coastal Flood Advisory	PHI	Burlington, Camden, Gloucester, Mercer	24 hr
Sep 8, 8:15 AM EDT	Areal Flood Advisory	PHI	Camden, Gloucester, Salem	119 min
Sep 8, 3:36 PM EDT	Gale Warning	PHI		48 hr
Sep 8, 4:49 PM EDT	Coastal Flood Watch	PHI	Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean and 1 more	7 hr
Sep 8, 4:49 PM EDT	Coastal Flood Warning	PHI	Cape May, Cumberland	6 hr
Sep 8, 4:49 PM EDT	High Surf Advisory	PHI	Atlantic, Cape May, Monmouth, Ocean	60 hr
Sep 8, 2:41 AM EDT	Areal Flood Warning	PHI	Berks, Montgomery	4 hr
Sep 7, 11:40 PM EDT	Special Weather Statement	PHI	Sussex	35 min
Sep 8, 12:11 AM EDT	Flash Flood Warning	PHI	Sussex	4 hr
Sep 8, 11:54 AM EDT	Special Weather Statement	PHI	Sussex	21 min
Sep 7, 10:51 PM EDT	Special Weather Statement	PHI	Talbot	39 min
Sep 7, 11:36 PM EDT	Special Weather Statement	PHI	Talbot	24 min
Sep 8, 3:14 AM EDT	Flash Flood Warning	PHI	Kent, Queen Anne's, Talbot	3 hr
Sep 8, 6:01 AM EDT	Areal Flood Warning	PHI	Kent, Queen Anne's, Talbot	4 hr

Nearby

Special Weather Statements in Maryland, 2018 Every special weather statement in 2018

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.