Alert archive / Maryland / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

August 18, 2011Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 18, 2011, 8:35 PM EDT for Queen Anne's County, Maryland. It was in force for 55 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 18, 2011, 8:35 PM EDT (00:35 UTC)
Expired: Aug 18, 2011, 9:30 PM EDT
In force: 55 min
Issued by: NWS Philadelphia/Mount Holly

County Queen Anne's County, MD

The radar

The Dover AFB radar (KDOX), 71 km from the middle of the area, began a volume at 00:38 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 00:00Z, 0.6 hours before the alert went out and 142 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: 27 J/kg
Mixed-layer CIN: -177 J/kg
Mixed-layer LCL: 1773 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

835 
WWUS81 KPHI 190035
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
835 PM EDT THU AUG 18 2011

MDZ012-015-020-190130-
CAROLINE MD-KENT MD-QUEEN ANNE'S MD-
835 PM EDT THU AUG 18 2011

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

AT 831 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 13 MILES WEST OF CENTERVILLE...MOVING EAST AT 20
MPH. THE THUNDERSTORM WILL BE NEAR OVERTON...QUEENSTOWN AROUND 845
PM...CENTREVILLE...CENTERVILLE AROUND 900 PM...STARKEY CORNER...
CARVILLE AROUND 915 PM...CHURCH HILL AND BARCLAY AROUND 930 PM.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.

LAT...LON 3905 7631 3900 7627 3898 7621 3900 7618
      3903 7625 3907 7623 3914 7626 3915 7628
      3917 7628 3932 7594 3904 7573 3893 7622
      3894 7624 3893 7625 3893 7628 3891 7635
      3895 7637

$$

HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 8:11 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	64 min
Aug 18, 8:26 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	112 min
Aug 18, 8:31 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer	59 min
Aug 18, 8:48 PM EDT	Special Weather Statement	PHI	Warren	57 min
Aug 18, 8:48 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	57 min
Aug 18, 8:59 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	61 min
Aug 18, 9:48 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset, Warren	57 min
Aug 18, 9:53 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland, Salem	67 min
Aug 18, 9:57 PM EDT	Severe Thunderstorm Warning	PHI	Morris	43 min
Aug 19, 12:19 AM EDT	Special Marine Warning	PHI		26 min
Aug 19, 12:19 AM EDT	Special Weather Statement	PHI	Cape May	41 min
Aug 19, 12:50 AM EDT	Special Weather Statement	PHI	Cumberland, Salem	40 min
Aug 19, 1:14 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Mercer and 1 more	3 hr
Aug 19, 1:31 AM EDT	Special Weather Statement	PHI	Cumberland, Gloucester, Salem	59 min
Aug 19, 2:28 AM EDT	Special Weather Statement	PHI	Camden, Cumberland, Gloucester, Salem	47 min
Aug 19, 2:48 AM EDT	Special Weather Statement	PHI	Monmouth, Ocean	57 min
Aug 19, 3:06 AM EDT	Areal Flood Advisory	PHI	Atlantic, Cape May, Cumberland	114 min
Aug 19, 3:21 AM EDT	Areal Flood Advisory	PHI	Middlesex, Monmouth, Ocean	114 min
Aug 19, 6:24 AM EDT	Special Weather Statement	PHI	Mercer, Middlesex	36 min
Aug 19, 6:37 AM EDT	Special Weather Statement	PHI	Middlesex	23 min
Aug 19, 1:34 PM EDT	Special Marine Warning	PHI		41 min
Aug 19, 2:39 PM EDT	Special Marine Warning	PHI		96 min
Aug 19, 3:23 PM EDT	Special Marine Warning	PHI		67 min
Aug 19, 4:05 PM EDT	Special Weather Statement	PHI	Camden	55 min
Aug 19, 4:15 PM EDT	Special Marine Warning	PHI		90 min
Aug 19, 4:29 PM EDT	Severe Thunderstorm Warning	PHI	Warren	61 min
Aug 19, 4:32 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	2 hr
Aug 19, 4:38 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	67 min
Aug 19, 4:42 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Salem	4 hr
Aug 19, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Sussex, Warren	78 min
Aug 19, 5:27 PM EDT	Areal Flood Advisory	PHI	Monmouth, Ocean	111 min
Aug 19, 5:29 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	50 min
Aug 19, 5:47 PM EDT	Special Marine Warning	PHI		118 min
Aug 19, 5:49 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset	104 min
Aug 19, 5:59 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Morris, Somerset	80 min
Aug 19, 6:14 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Mercer, Salem	65 min
Aug 19, 6:24 PM EDT	Severe Thunderstorm Warning	PHI	Morris	28 min
Aug 19, 6:54 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	31 min
Aug 18, 8:08 PM EDT	Special Weather Statement	PHI	Berks	67 min
Aug 19, 12:02 AM EDT	Special Weather Statement	PHI	Chester	58 min
Aug 19, 4:00 AM EDT	Areal Flood Warning	PHI	Delaware	4 hr
Aug 19, 1:46 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	59 min
Aug 19, 2:35 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	70 min
Aug 19, 2:38 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	3 hr
Aug 19, 2:57 PM EDT	Flash Flood Warning	PHI	Carbon, Monroe	3 hr
Aug 19, 3:47 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	58 min
Aug 19, 4:52 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	53 min
Aug 19, 5:35 PM EDT	Severe Thunderstorm Warning	PHI	Chester	55 min
Aug 19, 5:39 PM EDT	Areal Flood Advisory	PHI	Chester, Delaware	3 hr
Aug 19, 5:42 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Montgomery	48 min
Aug 19, 5:45 PM EDT	Areal Flood Advisory	PHI	Bucks, Montgomery, Philadelphia	3 hr
Aug 19, 1:00 AM EDT	Special Weather Statement	PHI	Cecil	45 min
Aug 19, 1:44 AM EDT	Special Weather Statement	PHI	Cecil, Kent, Queen Anne's	61 min
Aug 19, 4:09 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's	66 min
Aug 19, 4:42 PM EDT	Severe Thunderstorm Warning	PHI	Caroline	63 min
Aug 19, 4:53 PM EDT	Areal Flood Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's	5 hr
Aug 19, 6:18 PM EDT	Areal Flood Advisory	PHI	Caroline, Kent, Queen Anne's, Talbot	3 hr
Aug 19, 6:21 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	69 min
Aug 19, 6:34 PM EDT	Areal Flood Advisory	PHI	Caroline	2 hr
Aug 19, 1:20 PM EDT	Special Weather Statement	PHI	Kent, Sussex	85 min
Aug 19, 1:42 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	63 min
Aug 19, 2:09 PM EDT	Areal Flood Advisory	PHI	Sussex	92 min
Aug 19, 2:33 PM EDT	Areal Flood Advisory	PHI	Kent, New Castle	7 hr
Aug 19, 2:53 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	52 min
Aug 19, 2:59 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	61 min
Aug 19, 3:13 PM EDT	Special Weather Statement	PHI	Sussex	92 min
Aug 19, 3:53 PM EDT	Areal Flood Advisory	PHI	Kent, Sussex	5 hr
Aug 19, 4:23 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	82 min

Nearby

Special Weather Statements in Maryland, 2011 Every special weather statement in 2011

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.