Alert archive / Maryland / Special Weather Statements in 2017
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Aug 7, 2017, 4:32 PM EDT for Talbot County, Maryland. It was in force for 58 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 7, 2017, 4:32 PM EDT (20:32 UTC)
- Expired
- Aug 7, 2017, 5:30 PM EDT
- In force
- 58 min
- Issued by
- NWS Philadelphia/Mount Holly
County Talbot County, MD
The radar
The Dover AFB radar (KDOX), 53 km from the middle of the area, began a volume at 20:34 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, 8.5 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
- 57 J/kg
- Mixed-layer CIN
- -91 J/kg
- Mixed-layer LCL
- 996 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 176 m²/s²
- 0-3 km storm-relative helicity
- 193 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted.
419
WWUS81 KPHI 072032
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
432 PM EDT MON AUG 7 2017
DEZ002-003-MDZ019-020-072130-
Inland Sussex-Kent-Talbot-Caroline-
432 PM EDT MON AUG 7 2017
...A STRONG THUNDERSTORM WILL AFFECT WESTERN SUSSEX...SOUTH CENTRAL
KENT...TALBOT AND SOUTHERN CAROLINE COUNTIES...
At 431 PM EDT, a strong thunderstorm was located over Oxford, or 8
miles southwest of Easton, moving east at 35 mph.
Winds up to 40 mph are possible with this storm.
Locations impacted include...
Easton, Seaford, Laurel, Federalsburg, Bridgeville, Trappe, St.
Michaels, Preston, Oxford, Tanyard, Harmony, Smithville, Agner,
Matthews, Choptank, Sycamore, Hambleton, Windyhill, Andrewsville and
Blades.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 3882 7623 3878 7621 3882 7619 3889 7549
3851 7543 3851 7570 3865 7571 3869 7577
3871 7584 3868 7594 3857 7602 3859 7606
3863 7608 3864 7615 3868 7617 3868 7621
3871 7624 3876 7622 3868 7634 3869 7634
TIME...MOT...LOC 2031Z 263DEG 29KT 3870 7619
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 9:59 AM EDT | Areal Flood Advisory | PHI | Cumberland, Salem | 3 hr |
| Aug 7, 12:36 PM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May, Cumberland, Salem | 4 hr |
| Aug 7, 1:23 PM EDT | Flash Flood Warning | PHI | Cumberland | 4 hr |
| Aug 7, 2:04 PM EDT | Special Marine Warning | PHI | 56 min | |
| Aug 7, 2:53 PM EDT | Special Marine Warning | PHI | 67 min | |
| Aug 7, 3:25 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Ocean | 4 hr |
| Aug 7, 3:57 PM EDT | Special Marine Warning | PHI | 63 min | |
| Aug 7, 4:24 PM EDT | Areal Flood Warning | PHI | Atlantic, Burlington, Cape May, Cumberland, Gloucester, Ocean | 4 hr |
| Aug 7, 4:59 PM EDT | Special Marine Warning | PHI | 91 min | |
| Aug 7, 8:54 AM EDT | Areal Flood Advisory | PHI | Cecil, Kent, Queen Anne's | 3 hr |
| Aug 7, 10:44 AM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 4 hr |
| Aug 7, 11:41 AM EDT | Areal Flood Advisory | PHI | Caroline, Talbot | 3 hr |
| Aug 7, 1:35 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 4 hr |
| Aug 7, 2:40 PM EDT | Areal Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 6 hr |
| Aug 7, 5:25 PM EDT | Areal Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 4 hr |
| Aug 7, 1:47 PM EDT | Special Weather Statement | PHI | Sussex | 43 min |
| Aug 7, 1:58 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 47 min |
| Aug 7, 2:06 PM EDT | Flash Flood Warning | PHI | Kent, Sussex | 4 hr |
| Aug 7, 2:08 PM EDT | Tornado Warning | PHI | Sussex | 37 min |
| Aug 7, 2:22 PM EDT | Areal Flood Advisory | PHI | Sussex | 4 hr |
| Aug 7, 2:41 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 34 min |
| Aug 7, 4:57 PM EDT | Areal Flood Warning | PHI | Sussex | 4 hr |
Nearby
Special Weather Statements in Maryland, 2017Every special weather statement in 2017
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.