Alert archive / Maryland / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 138, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 24, 2017, 10:50 PM EDT for Caroline County, Queen Anne's County, Maryland; Kent County, Delaware. It was in force for 40 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, 10:50 PM EDT (02:50 UTC)
- Expired
- Jul 24, 2017, 11:30 PM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Caroline County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 31 km from the middle of the area, began a volume at 02:50 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, 2.8 hours before the alert went out and 121 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
- 161 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 1504 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
201
WUUS51 KPHI 250250
SVRPHI
DEC001-MDC011-035-250330-
/O.NEW.KPHI.SV.W.0138.170725T0250Z-170725T0330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1050 PM 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...
Queen Anne's County in northeastern Maryland...
Northern Caroline County in eastern Maryland...
* Until 1130 PM EDT
* At 1049 PM EDT, severe thunderstorms were located along a line
extending from near Sudlersville to near Wye Mills, moving east at
30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Severe thunderstorms will be near,
Sudlersville around 1055 PM EDT.
Queen Anne around 1105 PM EDT.
Hartly and Jumptown around 1110 PM EDT.
Oakland, Ridgely and Hazlettville around 1115 PM EDT.
Denton and Greensboro around 1120 PM EDT.
Dover, Camden, Goldsboro, Woodside, Viola and Dover Speedway
around 1125 PM EDT.
Bowers, Rising Sun-Lebanon, Dover Base Housing, Rising Sun and
Sandtown around 1130 PM EDT.
Other locations impacted by these severe thunderstorms include
Barclay, Rodney Village, Wyoming, Kent Acres, Magnolia, Riverview,
Templeville, Highland Acres, Felton and Queenstown.
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 3898 7623 3897 7622 3900 7617 3902 7619
3922 7596 3917 7537 3905 7537 3891 7527
3890 7528 3895 7532 3896 7539 3892 7541
3891 7547 3885 7555 3896 7624
TIME...MOT...LOC 0249Z 273DEG 28KT 3913 7590 3899 7612
HAIL...<.75IN
WIND...60MPH
$$
JRK2 follow-up statements
767
WWUS51 KPHI 250315
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1115 PM EDT MON JUL 24 2017
DEC001-MDC011-035-250330-
/O.CON.KPHI.SV.W.0138.000000T0000Z-170725T0330Z/
Kent DE-Queen Anne's MD-Caroline MD-
1115 PM EDT MON JUL 24 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT
FOR SOUTHERN KENT...CENTRAL QUEEN ANNE'S AND NORTHERN CAROLINE
COUNTIES...
At 1115 PM EDT, severe thunderstorms were located along a line
extending from near Hazlettville to Greensboro to Wye Mills, moving
east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
These severe storms will be near...
Hazlettville around 1120 PM EDT.
Camden, Woodside, Viola and Sandtown around 1125 PM EDT.
Harrington, Bowers, Rising Sun, Rising Sun-Lebanon, Dover Base
Housing and Andrewsville around 1130 PM EDT.
Other locations impacted by these severe thunderstorms include Rodney
Village, Wyoming, Kent Acres, Magnolia, Riverview, Highland Acres,
Felton, Woodside East, Frederica and Hillsboro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to damaging winds...frequent cloud to ground lightning
is occurring with this storm. Move indoors immediately.
Remember...if you can hear thunder...you are close enough to be
struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3904 7612 3909 7591 3914 7556 3918 7543
3917 7537 3905 7537 3891 7527 3890 7528
3895 7532 3896 7539 3892 7541 3891 7547
3885 7555 3885 7558 3895 7616
TIME...MOT...LOC 0315Z 280DEG 28KT 3909 7564 3897 7583 3896 7605
HAIL...<.75IN
WIND...60MPH
$$
JRK722
WWUS51 KPHI 250325
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1125 PM EDT MON JUL 24 2017
DEC001-MDC011-035-250335-
/O.EXP.KPHI.SV.W.0138.000000T0000Z-170725T0330Z/
Kent DE-Queen Anne's MD-Caroline MD-
1125 PM EDT MON JUL 24 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN KENT...CENTRAL QUEEN
ANNE'S AND NORTHERN CAROLINE COUNTIES WILL EXPIRE AT 1130 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire. However gusty winds
and heavy rain are still possible with these thunderstorms.
LAT...LON 3904 7612 3909 7591 3914 7556 3918 7543
3917 7537 3905 7537 3891 7527 3890 7528
3895 7532 3896 7539 3892 7541 3891 7547
3885 7555 3885 7558 3895 7616
TIME...MOT...LOC 0325Z 273DEG 28KT 3909 7558 3897 7577 3896 7599
$$
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, 9:52 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 38 min |
| 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, 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 |
| Jul 24, 9:01 PM EDT | Special Weather Statement | PHI | New Castle | 59 min |
| Jul 24, 10:01 PM EDT | Areal Flood Advisory | PHI | New Castle | 119 min |
| Jul 24, 10:38 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 52 min |
| Jul 25, 12:16 AM EDT | Special Weather Statement | PHI | Sussex | 44 min |
| Jul 25, 1:15 AM EDT | Special Weather Statement | PHI | Sussex | 45 min |
| Jul 25, 3:25 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.