Alert archive / Maryland / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 125, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 24, 2017, 1:52 AM EDT for Caroline County, Kent County, Queen Anne's County, Maryland; Kent County, Delaware. It was in force for 53 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, 1:52 AM EDT (05:52 UTC)
- Expired
- Jul 24, 2017, 2:45 AM EDT
- In force
- 53 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 38 km from the middle of the area, began a volume at 05:54 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 00:00Z, 5.9 hours before the alert went out and 130 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
- 771 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 995 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 6.7
The text
As transmitted.
165
WUUS51 KPHI 240552
SVRPHI
DEC001-MDC011-029-035-240645-
/O.NEW.KPHI.SV.W.0125.170724T0552Z-170724T0645Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
152 AM EDT MON JUL 24 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Kent County in central Delaware...
Central Queen Anne's County in northeastern Maryland...
Northeastern Caroline County in eastern Maryland...
Southwestern Kent County in northeastern Maryland...
* Until 245 AM EDT
* At 152 AM EDT, a severe thunderstorm was located over Starr, or
near Centerville, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Dover, Centerville, Centreville, Camden, Greensboro, Oakland,
Ridgely, Cheswold, Church Hill, Sudlersville, Bowers, Goldsboro,
Woodside, Viola, Hartly, Rising Sun-Lebanon, Starr, Jumptown,
Hazlettville and Dover Base Housing.
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.
This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter such as an interior room, a
bathroom, closet or basement.
&&
LAT...LON 3931 7541 3919 7537 3905 7537 3897 7531
3893 7604 3894 7610 3893 7612 3899 7617
3908 7620
TIME...MOT...LOC 0552Z 260DEG 31KT 3900 7600
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
JRK3 follow-up statements
760
WWUS51 KPHI 240605
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
205 AM EDT MON JUL 24 2017
MDC029-240614-
/O.CAN.KPHI.SV.W.0125.000000T0000Z-170724T0645Z/
Kent MD-
205 AM EDT MON JUL 24 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN KENT COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3921 7579 3921 7576 3931 7541 3920 7537
3905 7537 3897 7531 3896 7555 3895 7596
3909 7606
TIME...MOT...LOC 0604Z 260DEG 31KT 3902 7586
$$
DEC001-MDC011-035-240645-
/O.CON.KPHI.SV.W.0125.000000T0000Z-170724T0645Z/
Kent DE-Queen Anne's MD-Caroline MD-
205 AM EDT MON JUL 24 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM EDT
FOR KENT...EAST CENTRAL QUEEN ANNE'S AND NORTHEASTERN CAROLINE
COUNTIES...
At 204 AM EDT, a severe thunderstorm was located over Oakland, or 10
miles east of Centerville, moving east at 35 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Dover, Camden, Greensboro, Oakland, Ridgely, Cheswold, Sudlersville,
Bowers, Goldsboro, Woodside, Viola, Hartly, Rising Sun-Lebanon,
Jumptown, Hazlettville, Dover Base Housing, Dover Speedway, Sandtown,
Rising Sun and Carville.
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.
&&
LAT...LON 3921 7579 3921 7576 3931 7541 3920 7537
3905 7537 3897 7531 3896 7555 3895 7596
3909 7606
TIME...MOT...LOC 0604Z 260DEG 31KT 3902 7586
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
$$
JRK724
WWUS51 KPHI 240618
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
218 AM EDT MON JUL 24 2017
DEC001-MDC011-035-240645-
/O.CON.KPHI.SV.W.0125.000000T0000Z-170724T0645Z/
Kent DE-Queen Anne's MD-Caroline MD-
218 AM EDT MON JUL 24 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM EDT
FOR KENT...EAST CENTRAL QUEEN ANNE'S AND NORTHEASTERN CAROLINE
COUNTIES...
At 217 AM EDT, a severe thunderstorm was located over Sandtown, or 13
miles southwest of Dover, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Emergency management and doppler radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Dover, Camden, Greensboro, Cheswold, Sudlersville, Bowers, Goldsboro,
Woodside, Viola, Hartly, Rising Sun-Lebanon, Hazlettville, Dover Base
Housing, Dover Speedway, Sandtown, Rising Sun, Wyoming, Felton,
Frederica and Kenton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This is a DANGEROUS SITUATION. This storm has a history of producing
widespread wind damage in Queen Anne's County in eastern Maryland.
Seek shelter now inside a sturdy structure and stay away from
windows.
&&
LAT...LON 3921 7579 3921 7575 3931 7541 3921 7537
3905 7537 3899 7533 3898 7581 3918 7587
TIME...MOT...LOC 0617Z 260DEG 31KT 3904 7571
HAIL...<.75IN
WIND...60MPH
$$
JRK951
WWUS51 KPHI 240638
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
238 AM EDT MON JUL 24 2017
DEC001-MDC011-035-240648-
/O.EXP.KPHI.SV.W.0125.000000T0000Z-170724T0645Z/
Kent DE-Queen Anne's MD-Caroline MD-
238 AM EDT MON JUL 24 2017
...THE SEVERE THUNDERSTORM WARNING FOR KENT...EAST CENTRAL QUEEN
ANNE'S AND NORTHEASTERN CAROLINE COUNTIES WILL EXPIRE AT 245 AM
EDT...
The storm which prompted the warning has weakened below severe
limits and has exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds are still possible with
this thunderstorm.
LAT...LON 3921 7579 3921 7575 3931 7541 3921 7537
3905 7537 3899 7533 3898 7581 3918 7587
TIME...MOT...LOC 0638Z 255DEG 33KT 3914 7545
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 9:28 PM EDT | Areal Flood Warning | PHI | Cecil | 8 hr |
| Jul 24, 1:05 AM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 55 min |
| Jul 24, 1:10 AM EDT | Areal Flood Advisory | PHI | Cecil | 4 hr |
| Jul 24, 1:27 AM EDT | Tornado Warning | PHI | Kent, Queen Anne's | 21 min |
| Jul 24, 2:02 AM EDT | Severe Thunderstorm Warning | PHI | Cecil | 43 min |
| Jul 24, 4:40 AM EDT | Areal Flood Warning | PHI | Cecil | 4 hr |
| Jul 23, 9:08 PM EDT | River Flood Warning | PHI | New Castle | 17 hr |
| Jul 24, 2:34 AM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 41 min |
| Jul 24, 3:05 AM EDT | River Flood Warning | PHI | New Castle | 8 hr |
| Jul 24, 4:17 AM EDT | River Flood Warning | PHI | New Castle | 11 hr |
| Jul 24, 2:55 PM EDT | Coastal Flood Advisory | PHI | Sussex | 11 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2017Severe Thunderstorm Warnings in Delaware, 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.