Alert archive / Maryland / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 147, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 2, 2017, 6:55 PM EDT for Kent County, Queen Anne's County, Maryland. It was in force for 35 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 2, 2017, 6:55 PM EDT (22:55 UTC)
- Expired
- Aug 2, 2017, 7:30 PM EDT
- In force
- 35 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 68 km from the middle of the area, began a volume at 22:55 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 2, 7:11 PM EDT | TSTM WND DMG | Queenstown, MD | TREE BLOWN ONTO POWER LINES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.9 hours before the alert went out and 104 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
- 378 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 1469 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
198
WUUS51 KPHI 022255
SVRPHI
MDC029-035-022330-
/O.NEW.KPHI.SV.W.0147.170802T2255Z-170802T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
655 PM EDT WED AUG 2 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Central Queen Anne's County in northeastern Maryland...
Southwestern Kent County in northeastern Maryland...
* Until 730 PM EDT
* At 654 PM EDT, a severe thunderstorm was located over Overton, or 7
miles west of Centerville, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect damage to
trees and power lines.
* Locations impacted include...
Centerville, Centreville, Rock Hall, Chester, Overton, Wye Mills,
Grasonville, Starr, Stevensville, Carville, Hope and Queenstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3902 7631 3898 7628 3897 7622 3900 7617
3903 7624 3909 7623 3915 7626 3910 7587
3892 7596 3894 7610 3890 7611 3893 7621
3895 7621 3894 7624 3896 7625 3894 7625
3897 7633
TIME...MOT...LOC 2254Z 288DEG 17KT 3904 7621
HAIL...1.00IN
WIND...60MPH
$$
po1 follow-up statement
268
WWUS51 KPHI 022314
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
714 PM EDT WED AUG 2 2017
MDC029-035-022330-
/O.CON.KPHI.SV.W.0147.000000T0000Z-170802T2330Z/
Queen Anne's MD-Kent MD-
714 PM EDT WED AUG 2 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR CENTRAL QUEEN ANNE'S AND SOUTHWESTERN KENT COUNTIES...
At 714 PM EDT, a severe thunderstorm was located over Wye Mills, or
near Centerville, moving southeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect damage to
trees and power lines.
Locations impacted include...
Centerville, Centreville, Overton, Wye Mills, Grasonville, Starr,
Carville, Hope and Queenstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3897 7622 3900 7617 3903 7624 3909 7623
3911 7619 3906 7589 3892 7596 3894 7610
3890 7611 3893 7621 3895 7621 3895 7624
3896 7625 3895 7625 3895 7627 3898 7628
TIME...MOT...LOC 2314Z 295DEG 19KT 3898 7610
HAIL...1.00IN
WIND...60MPH
$$
poThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 6:00 PM EDT | Special Weather Statement | PHI | Kent | 30 min |
| Aug 2, 6:21 PM EDT | Special Weather Statement | PHI | Queen Anne's | 39 min |
| Aug 2, 6:28 PM EDT | Areal Flood Advisory | PHI | Kent, Queen Anne's | 4 hr |
| Aug 2, 7:30 PM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's | 45 min |
| Aug 2, 7:58 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 47 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2017Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.