Alert archive / Delaware / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

August 9, 2012Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 9, 2012, 2:23 PM EDT for Sussex County, Delaware. It was in force for 52 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 9, 2012, 2:23 PM EDT (18:23 UTC)
Expired: Aug 9, 2012, 3:15 PM EDT
In force: 52 min
Issued by: NWS Philadelphia/Mount Holly

County Sussex County, DE

The radar

The Dover AFB radar (KDOX), 11 km from the middle of the area, began a volume at 18:24 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.4 hours before the alert went out and 92 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: 1906 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 754 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 37 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.

169 
WWUS81 KPHI 091823
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
223 PM EDT THU AUG 9 2012

DEZ002-003-091915-
INLAND SUSSEX DE-KENT DE-
223 PM EDT THU AUG 9 2012

...A STRONG THUNDERSTORM WILL AFFECT KENT AND SUSSEX COUNTIES...

AT 220 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 16 MILES NORTH OF GEORGETOWN...MOVING EAST AT 10
MPH. THE THUNDERSTORM WILL BE NEAR SLAUGHTER BEACH AND BIG STONE
BEACH AROUND 245 PM.

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. DO
NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS
WHEN A THUNDERSTORM APPROACHES.

LAT...LON 3878 7550 3898 7551 3900 7532 3898 7530
      3894 7529 3892 7530 3883 7519 3880 7518

$$
 
TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 1:17 PM EDT	Special Marine Warning	PHI		88 min
Aug 9, 1:46 PM EDT	Special Marine Warning	PHI		54 min
Aug 9, 2:01 PM EDT	Special Marine Warning	PHI		119 min
Aug 9, 2:20 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Warren	70 min
Aug 9, 2:25 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Somerset	65 min
Aug 9, 2:56 PM EDT	Special Weather Statement	PHI	Sussex	94 min
Aug 9, 3:23 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	71 min
Aug 9, 3:35 PM EDT	Special Weather Statement	PHI	Mercer, Middlesex, Morris, Somerset	55 min
Aug 9, 4:18 PM EDT	Special Weather Statement	PHI	Hunterdon	57 min
Aug 9, 4:33 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Somerset	57 min
Aug 9, 4:57 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth	78 min
Aug 9, 5:06 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Somerset	3 hr
Aug 9, 5:08 PM EDT	Special Weather Statement	PHI	Mercer, Middlesex, Monmouth	2 hr
Aug 9, 5:26 PM EDT	Flash Flood Warning	PHI	Hunterdon, Mercer	2 hr
Aug 9, 5:48 PM EDT	Areal Flood Advisory	PHI	Middlesex	2 hr
Aug 9, 6:17 PM EDT	Flash Flood Warning	PHI	Middlesex	88 min
Aug 9, 1:00 PM EDT	Special Weather Statement	PHI	Lehigh	60 min
Aug 9, 1:22 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery	68 min
Aug 9, 1:26 PM EDT	Areal Flood Advisory	PHI	Bucks, Montgomery	3 hr
Aug 9, 1:33 PM EDT	Special Weather Statement	PHI	Northampton	57 min
Aug 9, 1:42 PM EDT	Special Weather Statement	PHI	Monroe	63 min
Aug 9, 1:45 PM EDT	Special Weather Statement	PHI	Berks	60 min
Aug 9, 2:13 PM EDT	Severe Thunderstorm Warning	PHI	Berks	77 min
Aug 9, 3:03 PM EDT	Special Weather Statement	PHI	Monroe	87 min
Aug 9, 3:05 PM EDT	Special Weather Statement	PHI	Chester, Montgomery	85 min
Aug 9, 3:11 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	6 hr
Aug 9, 3:20 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Montgomery	55 min
Aug 9, 3:39 PM EDT	Special Weather Statement	PHI	Bucks	66 min
Aug 9, 3:57 PM EDT	Areal Flood Advisory	PHI	Chester, Montgomery	104 min
Aug 9, 3:57 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery	63 min
Aug 9, 7:01 PM EDT	Special Weather Statement	PHI	Berks	59 min
Aug 9, 7:10 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh	80 min
Aug 9, 7:40 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	95 min
Aug 9, 7:46 PM EDT	Areal Flood Advisory	PHI	Berks	3 hr
Aug 9, 12:34 PM EDT	Special Weather Statement	PHI	Kent	56 min
Aug 9, 1:04 PM EDT	Severe Thunderstorm Warning	PHI	Kent	23 min
Aug 9, 1:17 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	43 min
Aug 9, 1:39 PM EDT	Special Weather Statement	PHI	Kent	66 min
Aug 9, 1:55 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	65 min
Aug 9, 2:04 PM EDT	Special Weather Statement	PHI	Kent	56 min
Aug 9, 2:19 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	56 min
Aug 9, 3:17 PM EDT	Special Weather Statement	PHI	Sussex	88 min
Aug 9, 3:42 PM EDT	Areal Flood Advisory	PHI	Sussex	119 min
Aug 9, 1:47 PM EDT	Special Weather Statement	PHI	Cecil	88 min

Nearby

Special Weather Statements in Delaware, 2012 Every special weather statement in 2012

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.