Alert archive / Maryland / 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, 10:55 PM EDT for Caroline County, Talbot County, Maryland. It was in force for 65 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, 10:55 PM EDT (02:55 UTC)
- Expired
- Aug 18, 2012, 12:00 AM EDT
- In force
- 65 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Caroline County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 52 km from the middle of the area, began a volume at 02:56 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, 2.9 hours before the alert went out and 105 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.
917
WWUS81 KPHI 180255
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1055 PM EDT FRI AUG 17 2012
MDZ019-020-180400-
CAROLINE MD-TALBOT MD-
1055 PM EDT FRI AUG 17 2012
...STRONG THUNDERSTORMS WILL AFFECT CAROLINE AND TALBOT COUNTIES...
AT 1051 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 35 MILES SOUTHWEST
OF DOVER TO 52 MILES WEST OF GEORGETOWN...MOVING EAST AT 25 MPH. THE
THUNDERSTORMS WILL BE NEAR CORDOVA...HILLSBORO AROUND 1100 PM...
TANYARD...MATTHEWS AROUND 1115 PM...WINDYHILL...HARMONY AROUND 1130
PM...AGNER AND FEDERALSBURG AROUND 1145 PM.
WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THESE STORMS.
THESE STORMS WILL PRODUCE SMALL HAIL.
VERY HEAVY RAINFALL WILL PRODUCE LOCALIZED FLOODING IN POOR DRAINAGE
AREAS AND SIGNIFICANT PONDING OF WATER ON ROADWAYS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
MOVE INDOORS WHEN A THUNDERSTORM APPROACHES.
LAT...LON 3861 7608 3860 7611 3867 7618 3866 7620
3871 7625 3871 7627 3888 7616 3889 7610
3894 7610 3892 7596 3894 7594 3894 7574
3866 7574 3870 7584 3869 7590 3867 7595
3860 7598 3857 7604
$$
SZATKOWSKIThe 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, 11:39 PM EDT | Special Weather Statement | PHI | Sussex | 81 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 |
Nearby
Special Weather Statements in Maryland, 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.