Alert archive / Maryland / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 102, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 14, 2017, 5:54 PM EDT for Caroline County, Talbot County, Maryland. It was in force for 51 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
- Jul 14, 2017, 5:54 PM EDT (21:54 UTC)
- Expired
- Jul 14, 2017, 6:45 PM EDT
- In force
- 51 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Caroline County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 67 km from the middle of the area, began a volume at 21:53 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 14, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 9.9 hours before the alert went out and 107 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
- 403 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 1367 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
810
WUUS51 KPHI 142154
SVRPHI
MDC011-041-142245-
/O.NEW.KPHI.SV.W.0102.170714T2154Z-170714T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
554 PM EDT FRI JUL 14 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southern Talbot County in eastern Maryland...
Southwestern Caroline County in eastern Maryland...
* Until 645 PM EDT
* At 553 PM EDT, a severe thunderstorm was located over St. Michaels,
or 9 miles west of Easton, moving southeast at 40 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.
* This severe thunderstorm will be near,
Easton and Oxford around 605 PM EDT.
Trappe and Hambleton around 610 PM EDT.
Windyhill and Tanyard around 615 PM EDT.
Preston and Choptank around 620 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and damaging winds...frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember...if you can hear thunder...you are close
enough to be struck by lightning.
&&
LAT...LON 3876 7633 3884 7628 3878 7621 3882 7619
3873 7586 3866 7596 3860 7599 3857 7604
3863 7608 3864 7615 3868 7617 3868 7621
3871 7624 3876 7622 3871 7628 3878 7629
3877 7632 3868 7633 3874 7634 3875 7637
TIME...MOT...LOC 2153Z 297DEG 36KT 3879 7624
HAIL...1.00IN
WIND...60MPH
$$
Robertson1 follow-up statement
534
WWUS51 KPHI 142238
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
638 PM EDT FRI JUL 14 2017
MDC011-041-142247-
/O.EXP.KPHI.SV.W.0102.000000T0000Z-170714T2245Z/
Talbot MD-Caroline MD-
638 PM EDT FRI JUL 14 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN TALBOT AND
SOUTHWESTERN CAROLINE COUNTIES WILL EXPIRE AT 645 PM EDT...
The severe thunderstorm which prompted the warning has weakened and
moved out of the warned area. Therefore, the warning will be allowed
to expire. However gusty winds and heavy rain are still possible
with this thunderstorm.
A severe thunderstorm watch remains in effect until 900 PM EDT for
eastern Maryland.
Remember, a Severe Thunderstorm Warning still remains in effect for
other portions of Caroline and Talbot counties.
LAT...LON 3876 7633 3884 7628 3878 7621 3882 7619
3873 7586 3866 7596 3860 7599 3857 7604
3863 7608 3864 7615 3868 7617 3868 7621
3871 7624 3876 7622 3871 7628 3878 7629
3877 7632 3868 7633 3874 7634 3875 7637
TIME...MOT...LOC 2237Z 297DEG 36KT 3859 7575
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 10:03 PM EDT | Special Weather Statement | PHI | Caroline | 27 min |
| Jul 13, 10:15 PM EDT | Areal Flood Advisory | PHI | Caroline, Talbot | 4 hr |
| Jul 14, 9:23 AM EDT | Special Weather Statement | PHI | Cecil | 37 min |
| Jul 14, 11:40 AM EDT | Flash Flood Watch | PHI | Cecil, Kent, Queen Anne's | 11 hr |
| Jul 14, 12:06 PM EDT | Heat Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 7 hr |
| Jul 14, 2:31 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 59 min |
| Jul 14, 2:46 PM EDT | Areal Flood Advisory | PHI | Cecil | 3 hr |
| Jul 14, 3:10 PM EDT | Flash Flood Warning | PHI | Cecil | 2 hr |
| Jul 14, 3:18 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 12 min |
| Jul 14, 3:23 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 67 min |
| Jul 14, 3:52 PM EDT | Flash Flood Warning | PHI | Talbot | 53 min |
| Jul 14, 3:57 PM EDT | Flash Flood Warning | PHI | Cecil, Kent | 2 hr |
| Jul 14, 4:00 PM EDT | Special Weather Statement | PHI | Caroline | 45 min |
| Jul 14, 4:05 PM EDT | Special Weather Statement | PHI | Kent | 40 min |
| Jul 14, 4:48 PM EDT | Special Weather Statement | PHI | Queen Anne's | 27 min |
| Jul 14, 4:59 PM EDT | Flash Flood Warning | PHI | Queen Anne's | 4 hr |
| Jul 14, 5:27 PM EDT | Special Weather Statement | PHI | Queen Anne's | 63 min |
| Jul 14, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 65 min |
| Jul 14, 5:58 PM EDT | Flash Flood Warning | PHI | Talbot | 3 hr |
| Jul 14, 6:10 PM EDT | Flash Flood Warning | PHI | Caroline | 3 hr |
| Jul 14, 6:20 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 40 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.