Alert archive / Maryland / Special Weather Statements in 2020

Special Weather Statement, NWS Philadelphia/Mount Holly

April 8, 2020Cumberland County, New Jersey; Kent County, New Castle County, Delaware; 5 counties in Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Apr 8, 2020, 4:21 AM EDT for Cumberland County, New Jersey; Kent County, New Castle County, Delaware; 5 counties in Maryland. It was in force for 39 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: Apr 8, 2020, 4:21 AM EDT (08:21 UTC)
Expired: Apr 8, 2020, 5:00 AM EDT
In force: 39 min
Issued by: NWS Philadelphia/Mount Holly

Counties Kent County, DE, New Castle County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Cumberland County, NJ

The radar

The Dover AFB radar (KDOX), 61 km from the middle of the area, began a volume at 08:22 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, 8.4 hours before the alert went out and 112 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: 14 J/kg
Mixed-layer CIN: -214 J/kg
Mixed-layer LCL: 1167 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

927 
WWUS81 KPHI 080821
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
421 AM EDT Wed Apr 8 2020

DEZ001-002-MDZ008-012-015-019-020-NJZ016-021-023-080900-
Kent-New Castle-Queen
Anne's-Talbot-Cecil-Kent-Caroline-Salem-Cumberland-Cape May-
421 AM EDT Wed Apr 8 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NEW CASTLE...KENT...
TALBOT...QUEEN ANNE'S...CAROLINE...KENT...SOUTHEASTERN CECIL...
CUMBERLAND...SOUTHWESTERN SALEM AND NORTHWESTERN CAPE MAY COUNTIES...

At 420 AM EDT, radar indicated strong thunderstorms were located
along a line extending from Bear to Bowleys Quarters to College Park.
Movement was southeast at 60 mph.

Wind gusts up to 40 mph are possible with these storms.

Locations impacted include...
Dover, Millville, Bridgeton, Middletown, Easton, Elkton, Centerville,
Talbot, Pennsville, Smyrna, Chestertown, Salem, Denton, Centreville,
Laurel Lake, Harrington, Romancoke, Camden, Clayton and Quinton.

This includes Interstate 95 in Delaware between mile markers 3 and 6.
 
LAT...LON 3894 7636 3898 7634 3900 7617 3915 7628
      3932 7618 3942 7600 3954 7600 3968 7566
      3927 7478 3884 7573 3858 7605 3876 7622
      3868 7634 3868 7635 3886 7626 3886 7625
      3879 7620 3879 7619 3894 7621 3885 7638
TIME...MOT...LOC 0820Z 304DEG 51KT 3962 7570 3934 7639 3901 7694 

$$

NC

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 9:30 PM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more	33 hr
Apr 8, 2:30 AM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester	30 min
Apr 8, 2:35 AM EDT	Special Weather Statement	PHI	Camden	25 min
Apr 8, 2:40 AM EDT	Special Weather Statement	PHI	Hunterdon	35 min
Apr 8, 2:51 AM EDT	Special Weather Statement	PHI	Cumberland	24 min
Apr 8, 2:58 AM EDT	Special Weather Statement	PHI	Burlington	32 min
Apr 8, 3:13 AM EDT	Special Weather Statement	PHI	Hunterdon, Mercer, Middlesex	32 min
Apr 8, 3:25 AM EDT	Special Weather Statement	PHI	Burlington, Ocean	35 min
Apr 8, 3:50 AM EDT	Gale Watch	PHI		24 hr
Apr 8, 4:52 AM EDT	Special Marine Warning	PHI		83 min
Apr 8, 4:56 AM EDT	Special Weather Statement	PHI	Atlantic, Cape May, Cumberland	64 min
Apr 8, 3:24 PM EDT	Gale Warning	PHI		58 hr
Apr 8, 7:19 PM EDT	Wind Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	24 hr
Apr 8, 1:53 AM EDT	Special Weather Statement	PHI	Carbon, Lehigh, Northampton	37 min
Apr 8, 1:55 AM EDT	Special Weather Statement	PHI	Chester, Delaware	50 min
Apr 8, 1:59 AM EDT	Special Weather Statement	PHI	Berks	46 min
Apr 7, 11:10 PM EDT	Special Weather Statement	PHI	Sussex	35 min
Apr 7, 11:48 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	27 min
Apr 8, 12:53 AM EDT	Special Weather Statement	PHI	Kent	52 min
Apr 8, 1:06 AM EDT	Special Weather Statement	PHI	New Castle	39 min
Apr 7, 11:21 PM EDT	Special Weather Statement	PHI	Caroline	39 min
Apr 8, 12:09 AM EDT	Special Weather Statement	PHI	Kent, Queen Anne's	51 min

Nearby

Special Weather Statements in Maryland, 2020 Special Weather Statements in Delaware, 2020 Special Weather Statements in New Jersey, 2020 Every special weather statement in 2020

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.