Alert archive / Maryland / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 135, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 24, 2017, 9:52 PM EDT for Caroline County, Kent County, Queen Anne's County, Maryland. It was in force for 38 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 24, 2017, 9:52 PM EDT (01:52 UTC)
- Expired
- Jul 24, 2017, 10:30 PM EDT
- In force
- 38 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Caroline County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 72 km from the middle of the area, began a volume at 01:56 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.9 hours before the alert went out and 109 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
- 1156 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 1330 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.0
The text
As transmitted.
377
WUUS51 KPHI 250152
SVRPHI
MDC011-029-035-250230-
/O.NEW.KPHI.SV.W.0135.170725T0152Z-170725T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
952 PM EDT MON JUL 24 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Queen Anne's County in northeastern Maryland...
North central Caroline County in eastern Maryland...
Southwestern Kent County in northeastern Maryland...
* Until 1030 PM EDT
* At 952 PM EDT, a severe thunderstorm was located over Rock Hall, or
7 miles east of Bodkin Point, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Centerville, Chestertown, Centreville, Oakland, Ridgely, Rock Hall,
Church Hill, Sudlersville, Old Town, Langford, Jumptown, Starkey
Corner, Carville, Hope, Barclay and Kingstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3919 7626 3925 7622 3919 7577 3894 7588
3908 7623 3909 7623 3913 7625 3915 7628
3917 7628
TIME...MOT...LOC 0152Z 283DEG 34KT 3915 7629
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
jrk2 follow-up statements
724
WWUS51 KPHI 250219
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1019 PM EDT MON JUL 24 2017
MDC011-029-035-250230-
/O.CON.KPHI.SV.W.0135.000000T0000Z-170725T0230Z/
Queen Anne's MD-Caroline MD-Kent MD-
1019 PM EDT MON JUL 24 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR NORTHEASTERN QUEEN ANNE'S...NORTH CENTRAL CAROLINE AND
SOUTHWESTERN KENT COUNTIES...
At 1019 PM EDT, a severe thunderstorm was located over Old Town, or
near Centerville, moving southeast at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
This severe storm will be near...
Centerville, Centreville, Church Hill, Starkey Corner, Carville
and Hope around 1030 PM EDT.
Other locations impacted by this severe thunderstorm include
Kingstown and Barclay.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to damaging winds...frequent cloud to ground lightning
is occurring with this storm. Move indoors immediately.
Remember...if you can hear thunder...you are close enough to be
struck by lightning.
&&
LAT...LON 3916 7628 3921 7621 3924 7612 3919 7577
3894 7588 3908 7623 3909 7623 3913 7625
TIME...MOT...LOC 0219Z 293DEG 20KT 3912 7612
HAIL...<.75IN
WIND...60MPH
$$
JRK950
WWUS51 KPHI 250230
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1030 PM EDT MON JUL 24 2017
MDC011-029-035-250240-
/O.EXP.KPHI.SV.W.0135.000000T0000Z-170725T0230Z/
Queen Anne's MD-Caroline MD-Kent MD-
1030 PM EDT MON JUL 24 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN QUEEN ANNE'S...
NORTH CENTRAL CAROLINE AND SOUTHWESTERN KENT COUNTIES HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been allowed to expire. However gusty winds and heavy rain are still
possible with this thunderstorm.
Remember, a Severe Thunderstorm Warning still remains in effect for
a portion of Queen Anne's and Kent Counties farther north and east
of this warning. until 1045 PM.
LAT...LON 3916 7628 3921 7621 3924 7612 3919 7577
3894 7588 3908 7623 3909 7623 3913 7625
TIME...MOT...LOC 0230Z 283DEG 34KT 3910 7603
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 8:08 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 52 min |
| Jul 24, 8:59 PM EDT | Areal Flood Advisory | PHI | Cecil | 2 hr |
| Jul 24, 10:02 PM EDT | Special Weather Statement | PHI | Cecil | 43 min |
| Jul 24, 10:06 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's | 39 min |
| Jul 24, 10:50 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 40 min |
| Jul 24, 11:10 PM EDT | Special Weather Statement | PHI | Talbot | 35 min |
| Jul 24, 11:30 PM EDT | Special Weather Statement | PHI | Caroline | 45 min |
| Jul 24, 11:55 PM EDT | Areal Flood Advisory | PHI | Caroline, Queen Anne's | 2 hr |
| Jul 25, 12:34 AM EDT | Severe Thunderstorm Warning | PHI | Caroline | 41 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.