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, 9:31 PM EDT for Caroline County, Queen Anne's County, Maryland. It was in force for 89 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, 9:31 PM EDT (01:31 UTC)
- Expired
- Aug 17, 2012, 11:00 PM EDT
- In force
- 89 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Caroline County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 69 km from the middle of the area, began a volume at 01:31 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.5 hours before the alert went out and 101 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
- 288 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 1300 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
081
WWUS81 KPHI 180131
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
931 PM EDT FRI AUG 17 2012
MDZ015-019-020-180300-
CAROLINE MD-QUEEN ANNE'S MD-TALBOT MD-
931 PM EDT FRI AUG 17 2012
...STRONG THUNDERSTORMS WILL AFFECT CAROLINE...QUEEN ANNE'S AND
TALBOT COUNTIES...
AT 925 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 28 MILES SOUTHEAST
OF BALTIMORE TO 38 MILES SOUTH OF BALTIMORE...MOVING EAST AT 20 MPH.
THE THUNDERSTORMS WILL BE NEAR TALBOT...ST. MICHAELS AROUND 945 PM...
CENTREVILLE...WYE MILLS AROUND 1000 PM...CARVILLE...STARR AROUND 1015
PM...JUMPTOWN...CORDOVA AROUND 1030 PM...MATTHEWS AND GRIFFIN AROUND
1045 PM.
WIND GUSTS TO 50 MPH AND SMALL HAIL 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 3887 7626 3881 7621 3882 7620 3894 7624
3890 7625 3892 7628 3889 7627 3890 7632
3886 7632 3883 7637 3884 7638 3902 7633
3903 7629 3899 7627 3898 7620 3904 7620
3912 7576 3881 7574 3877 7636 3875 7639
$$
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, 9:55 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 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.