Alert archive / Delaware / Special Weather Statements in 2012
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Aug 17, 2012, 11:39 PM EDT for Sussex County, Delaware. It was in force for 81 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 17, 2012, 11:39 PM EDT (03:39 UTC)
- Expired
- Aug 18, 2012, 1:00 AM EDT
- In force
- 81 min
- Issued by
- NWS Philadelphia/Mount Holly
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 19 km from the middle of the area, began a volume at 03:41 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, 3.7 hours before the alert went out and 83 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.
- Mixed-layer CAPE
- 116 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 1308 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
992
WWUS81 KPHI 180339
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1139 PM EDT FRI AUG 17 2012
DEZ003-004-180500-
DELAWARE BEACHES DE-INLAND SUSSEX DE-
1139 PM EDT FRI AUG 17 2012
...AFEW STRONG THUNDERSTORMS WILL AFFECT SUSSEX COUNTY...
AT 1133 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF STRONG THUNDERSTORMS ACROSS TALBOT COUNTY MARYLAND...MOVING
EAST AT 30 MPH. THESE THUNDERSTORMS WILL BE NEAR BRIDGEVILLE...
SEAFORD...BLADES AND BETHEL AROUND 1210 AM...GREENWOOD...LAUREL
AROUND 1215 AM...ELLENDALE AROUND 1230 AM...GEORGETOWN...GUMBORO
AROUND 1235 AM AND MILTON AROUND 1240 AM.
VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.
WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. DO
NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS
WHEN A THUNDERSTORM APPROACHES.
LAT...LON 3846 7570 3861 7572 3864 7571 3882 7572
3885 7523 3879 7515 3879 7511 3881 7510
3880 7508 3862 7506 3862 7505 3845 7504
$$
FORECASTER: POThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 6:09 AM EDT | Special Weather Statement | PHI | Atlantic, Cape May | 36 min |
| Aug 17, 9:08 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 67 min |
| Aug 17, 8:24 PM EDT | Special Weather Statement | PHI | Cecil, Kent | 81 min |
| Aug 17, 9:31 PM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's | 89 min |
| Aug 17, 9:55 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 65 min |
| Aug 17, 10:55 PM EDT | Special Weather Statement | PHI | Caroline, Talbot | 65 min |
Nearby
Special Weather Statements in Delaware, 2012Every 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.