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 11, 2012, 3:20 PM EDT for Sussex County, Delaware. It was in force for 85 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 11, 2012, 3:20 PM EDT (19:20 UTC)
- Expired
- Aug 11, 2012, 4:45 PM EDT
- In force
- 85 min
- Issued by
- NWS Philadelphia/Mount Holly
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 49 km from the middle of the area, began a volume at 19:19 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 12:00Z, 7.3 hours before the alert went out and 69 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
- 879 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 666 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
337
WWUS81 KPHI 111920
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
320 PM EDT SAT AUG 11 2012
DEZ004-112045-
DELAWARE BEACHES DE-
320 PM EDT SAT AUG 11 2012
...STRONG THUNDERSTORMS WILL AFFECT SOUTHEAST SUSSEX COUNTY BY 430
PM...
AT 316 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 44 MILES SOUTH OF
GEORGETOWN TO 50 MILES SOUTH OF GEORGETOWN TO 55 MILES SOUTH OF
GEORGETOWN...MOVING NORTHEAST AT 25 MPH. IF THESE THUNDERSTORMS HOLD
TOGETHER AS EXPECTED...THEY WILL BE NEAR FENWICK ISLAND AROUND 430
PM...SOUTH BETHANY AND BETHANY BEACH AROUND 445 PM.
VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.
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 3848 7511 3849 7511 3854 7511 3857 7505
3853 7505 3852 7504 3845 7504 3844 7505
3844 7510
$$
FORECASTER: DRAGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 11:51 AM EDT | Special Weather Statement | PHI | Sussex, Warren | 54 min |
| Aug 11, 11:57 AM EDT | Special Weather Statement | PHI | Cape May, Cumberland | 63 min |
| Aug 11, 1:06 PM EDT | Special Weather Statement | PHI | Cumberland | 39 min |
| Aug 11, 1:38 PM EDT | Special Marine Warning | PHI | 37 min | |
| Aug 11, 1:45 PM EDT | Special Weather Statement | PHI | Cape May | 45 min |
| Aug 11, 2:12 PM EDT | Special Weather Statement | PHI | Cape May | 48 min |
| Aug 11, 2:35 PM EDT | Special Weather Statement | PHI | Cape May | 25 min |
| Aug 11, 3:01 PM EDT | Special Weather Statement | PHI | Cape May | 44 min |
| Aug 11, 3:10 PM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May, Ocean | 62 min |
| Aug 11, 3:25 PM EDT | Special Marine Warning | PHI | 35 min | |
| Aug 11, 4:04 PM EDT | Flash Flood Warning | PHI | Atlantic, Cape May | 114 min |
| Aug 11, 5:20 PM EDT | Special Weather Statement | PHI | Atlantic | 40 min |
| Aug 11, 6:42 PM EDT | Special Weather Statement | PHI | Salem | 33 min |
| Aug 11, 6:49 PM EDT | Special Weather Statement | PHI | Morris | 26 min |
| Aug 11, 6:52 PM EDT | Special Weather Statement | PHI | Somerset | 23 min |
| Aug 11, 7:17 PM EDT | Special Weather Statement | PHI | Gloucester | 28 min |
| Aug 11, 7:19 PM EDT | Special Weather Statement | PHI | Sussex | 26 min |
| Aug 11, 7:56 PM EDT | Special Weather Statement | PHI | Mercer | 34 min |
| Aug 11, 6:07 PM EDT | Special Weather Statement | PHI | Bucks | 38 min |
| Aug 11, 6:11 PM EDT | Special Weather Statement | PHI | Chester | 49 min |
| Aug 11, 7:33 PM EDT | Special Weather Statement | PHI | Bucks | 27 min |
| Aug 11, 7:52 PM EDT | Special Weather Statement | PHI | Chester | 23 min |
| Aug 11, 11:44 AM EDT | Special Weather Statement | PHI | Kent | 61 min |
| Aug 11, 4:21 PM EDT | Special Weather Statement | PHI | Sussex | 39 min |
| Aug 11, 5:12 PM EDT | Special Weather Statement | PHI | Caroline | 63 min |
| Aug 11, 7:09 PM EDT | Special Weather Statement | PHI | Kent | 36 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.