Alert archive / Maryland / Special Weather Statements in 2020

Special Weather Statement, NWS Philadelphia/Mount Holly

July 21, 2020Kent County, Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 21, 2020, 9:46 PM EDT for Kent County, Queen Anne's County, Maryland. It was in force for 29 min. 8 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 21, 2020, 9:46 PM EDT (01:46 UTC)
Expired: Jul 21, 2020, 10:15 PM EDT
In force: 29 min
Issued by: NWS Philadelphia/Mount Holly

Counties Kent County, MD, Queen Anne's County, MD

The radar

The Dover AFB radar (KDOX), 69 km from the middle of the area, began a volume at 01:48 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.

What was reported inside it

Time	Report	Where	Remark
Jul 21, 10:08 PM EDT	TSTM WND DMG	1 Ese Hope, MD	REPORTS OF POWER LINES DOWN NEAR DEVERS BRANCH ROAD IN HOPE. TIME ESTIMATED FROM RADAR.
Jul 21, 10:08 PM EDT	TSTM WND DMG	1 Ese Hope, MD	REPORTS OF POWER LINES DOWN NEAR DEVERS BRANCH ROAD IN HOPE. TIME ESTIMATED FROM RADAR.
Jul 21, 10:08 PM EDT	TSTM WND DMG	1 Wsw Church Hill, MD	WIND-BLOWN DEBRIS CLOSED STATE HIGHWAY 213 NEAR STATE HIGHWAY 19. TIME ESTIMATED FROM RADAR.
Jul 21, 10:08 PM EDT	TSTM WND DMG	1 Wsw Church Hill, MD	WIND-BLOWN DEBRIS CLOSED STATE HIGHWAY 213 NEAR STATE HIGHWAY 19. TIME ESTIMATED FROM RADAR.
Jul 21, 10:16 PM EDT	TSTM WND DMG	2 Sw Crumpton, MD	DOWNED TREE LIMBS AND WIRES NEAR MCGINNES ROAD NEAR CRUMPTON. TIME ESTIMATED FROM RADAR.
Jul 21, 10:16 PM EDT	TSTM WND DMG	2 Sw Crumpton, MD	DOWNED TREE LIMBS AND WIRES NEAR MCGINNES ROAD NEAR CRUMPTON. TIME ESTIMATED FROM RADAR.
Jul 21, 10:23 PM EDT	TSTM WND DMG	1 Nnw Sudlersville, MD	TWO TREES REPORTED DOWN BETWEEN SUDLERSVILLE AND CRUMPTON. TIME ESTIMATED FROM RADAR.
Jul 21, 10:23 PM EDT	TSTM WND DMG	1 Nnw Sudlersville, MD	TWO TREES REPORTED DOWN BETWEEN SUDLERSVILLE AND CRUMPTON. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 1.8 hours before the alert went out and 114 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: 581 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 2012 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

579 
WWUS81 KPHI 220146
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
946 PM EDT Tue Jul 21 2020

MDZ012-015-020-220215-
Queen Anne's-Kent-Caroline-
946 PM EDT Tue Jul 21 2020

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

At 946 PM EDT, a strong thunderstorm was located near Old Town, or 8
miles north of Centerville, moving east at 25 mph.

Wind gusts up to 40 mph are possible with this storm.

Locations impacted include...
Centerville, Chestertown, Centreville, Church Hill, Millington,
Sudlersville, Goldsboro, Old Town, Newtown, Morgnec, Crumpton,
Sassafras, Langford, Overton, Starkey Corner, Massey, Carville,
Kennedyville, Hope and Galena.

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 3929 7618 3929 7617 3931 7618 3938 7578
      3904 7574 3900 7617 3901 7619 3901 7621
      3903 7624
TIME...MOT...LOC 0146Z 259DEG 21KT 3916 7605 

$$

Gorse

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 10:57 PM EDT	Special Marine Warning	PHI		63 min
Jul 22, 2:10 PM EDT	Severe Thunderstorm Warning	PHI	Warren	50 min
Jul 22, 3:04 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	30 min
Jul 22, 3:18 PM EDT	Special Weather Statement	PHI	Morris, Warren	42 min
Jul 22, 3:50 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Sussex, Warren	29 min
Jul 22, 4:33 PM EDT	Special Weather Statement	PHI	Morris	57 min
Jul 22, 4:56 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset	49 min
Jul 22, 5:16 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Sussex, Warren	59 min
Jul 22, 5:23 PM EDT	Areal Flood Advisory	PHI	Warren	3 hr
Jul 22, 5:33 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester	57 min
Jul 22, 5:40 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Hunterdon, Mercer, Somerset	65 min
Jul 22, 5:49 PM EDT	Special Marine Warning	PHI		86 min
Jul 22, 5:54 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	51 min
Jul 22, 6:04 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren	60 min
Jul 22, 6:12 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Salem	48 min
Jul 22, 6:17 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset	52 min
Jul 22, 6:46 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem	44 min
Jul 22, 6:47 PM EDT	Special Marine Warning	PHI		28 min
Jul 22, 6:52 PM EDT	Areal Flood Advisory	PHI	Middlesex, Somerset	113 min
Jul 22, 6:52 PM EDT	Special Marine Warning	PHI		41 min
Jul 22, 7:20 PM EDT	Special Marine Warning	PHI		55 min
Jul 22, 7:23 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more	52 min
Jul 22, 7:58 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Ocean	47 min
Jul 22, 7:59 PM EDT	Special Marine Warning	PHI		61 min
Jul 21, 8:45 PM EDT	Special Weather Statement	PHI	Berks	30 min
Jul 21, 9:20 PM EDT	Special Weather Statement	PHI	Montgomery	25 min
Jul 22, 1:36 PM EDT	Special Weather Statement	PHI	Carbon	24 min
Jul 22, 1:58 PM EDT	Special Weather Statement	PHI	Monroe	32 min
Jul 22, 3:29 PM EDT	Special Weather Statement	PHI	Lebanon	46 min
Jul 22, 3:39 PM EDT	Severe Thunderstorm Warning	PHI	Berks	51 min
Jul 22, 4:01 PM EDT	Severe Thunderstorm Warning	PHI	Chester	22 min
Jul 22, 4:10 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Northampton	65 min
Jul 22, 4:25 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	50 min
Jul 22, 4:38 PM EDT	Severe Thunderstorm Warning	PHI	Chester	52 min
Jul 22, 4:49 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Carbon, Lehigh, Monroe, Northampton	56 min
Jul 22, 5:09 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more	66 min
Jul 21, 10:14 PM EDT	Special Weather Statement	PHI	Kent	46 min
Jul 21, 10:21 PM EDT	Severe Thunderstorm Warning	PHI	Kent	54 min
Jul 22, 5:23 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	52 min
Jul 21, 9:16 PM EDT	Special Weather Statement	PHI	Kent	29 min
Jul 21, 9:25 PM EDT	Special Weather Statement	PHI	Talbot	35 min
Jul 21, 9:39 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Talbot	51 min
Jul 22, 4:47 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	43 min
Jul 22, 5:13 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	47 min

Nearby

Special Weather Statements in Maryland, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.