Alert archive / Maryland / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 304, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 1, 2019, 4:06 PM EDT for Kent County, New Castle County, Delaware; Caroline County, Kent County, Queen Anne's County, Maryland. It was in force for 54 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
- Aug 1, 2019, 4:06 PM EDT (20:06 UTC)
- Expired
- Aug 1, 2019, 5:00 PM EDT
- In force
- 54 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Kent County, DE, New Castle County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 53 km from the middle of the area, began a volume at 20:06 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 12:00Z, 8.1 hours before the alert went out and 152 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
- 134 J/kg
- Mixed-layer CIN
- -156 J/kg
- Mixed-layer LCL
- 1051 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
310
WUUS51 KPHI 012006
SVRPHI
DEC001-003-MDC011-029-035-012100-
/O.NEW.KPHI.SV.W.0304.190801T2006Z-190801T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
406 PM EDT Thu Aug 1 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern New Castle County in northern Delaware...
Northern Kent County in central Delaware...
Northeastern Queen Anne's County in northeastern Maryland...
Northeastern Caroline County in eastern Maryland...
East central Kent County in northeastern Maryland...
* Until 500 PM EDT.
* At 405 PM EDT, severe thunderstorms were located along a line
extending from near Green Spring to near Delaney Corner to
Sudlersville, moving southeast at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Dover, Middletown, Smyrna, Camden, Clayton, Cheswold, Millington,
Sudlersville, Goldsboro, Woodside, Hartly, Rising Sun-Lebanon,
Hazlettville, Delaney Corner, Dover Base Housing, Crumpton, Dover
Speedway, Sandtown, Green Spring and Rising Sun.
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 these storms. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
&&
LAT...LON 3935 7580 3946 7570 3941 7553 3937 7552
3935 7549 3934 7550 3931 7543 3925 7540
3920 7540 3913 7541 3899 7573 3922 7598
TIME...MOT...LOC 2005Z 293DEG 9KT 3937 7565 3924 7571 3917 7588
HAIL...1.00IN
WIND...60MPH
$$
Gorse2 follow-up statements
541
WWUS51 KPHI 012021
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
421 PM EDT Thu Aug 1 2019
DEC001-003-MDC011-029-035-012100-
/O.CON.KPHI.SV.W.0304.000000T0000Z-190801T2100Z/
New Castle DE-Kent DE-Queen Anne's MD-Caroline MD-Kent MD-
421 PM EDT Thu Aug 1 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTHWESTERN NEW CASTLE...NORTHERN KENT...NORTHEASTERN QUEEN
ANNE'S...NORTHEASTERN CAROLINE AND EAST CENTRAL KENT COUNTIES...
At 421 PM EDT, severe thunderstorms were located along a line
extending from near Green Spring to near Cheswold to near
Sudlersville, moving southeast at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Dover, Smyrna, Camden, Clayton, Cheswold, Millington, Sudlersville,
Goldsboro, Woodside, Hartly, Rising Sun-Lebanon, Hazlettville,
Delaney Corner, Dover Base Housing, Crumpton, Dover Speedway,
Sandtown, Green Spring, Rising Sun and Massey.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 3934 7580 3943 7563 3941 7553 3937 7552
3935 7549 3934 7550 3931 7543 3925 7540
3920 7540 3913 7541 3899 7573 3922 7598
TIME...MOT...LOC 2021Z 293DEG 9KT 3935 7560 3922 7566 3915 7583
HAIL...1.00IN
WIND...60MPH
$$
Gorse446
WWUS51 KPHI 012051
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
451 PM EDT Thu Aug 1 2019
DEC003-MDC029-012100-
/O.CAN.KPHI.SV.W.0304.000000T0000Z-190801T2100Z/
New Castle DE-Kent MD-
451 PM EDT Thu Aug 1 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEW CASTLE AND
EAST CENTRAL KENT COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, this warning has been cancelled.
LAT...LON 3925 7540 3920 7540 3913 7541 3899 7573
3922 7598
TIME...MOT...LOC 2050Z 351DEG 18KT 3906 7568
$$
DEC001-MDC011-035-012100-
/O.CON.KPHI.SV.W.0304.000000T0000Z-190801T2100Z/
Kent DE-Queen Anne's MD-Caroline MD-
451 PM EDT Thu Aug 1 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHERN KENT...NORTHEASTERN QUEEN ANNE'S AND NORTHEASTERN
CAROLINE COUNTIES...
At 450 PM EDT, a severe thunderstorm was located over Sandtown, or 11
miles southwest of Dover, moving south at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Dover, Camden, Cheswold, Sudlersville, Goldsboro, Woodside, Hartly,
Rising Sun-Lebanon, Hazlettville, Dover Base Housing, Dover Speedway,
Sandtown, Rising Sun, Wyoming, Kenton, Little Creek, Leipsic,
Henderson, Marydel and Templeville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3925 7540 3920 7540 3913 7541 3899 7573
3922 7598
TIME...MOT...LOC 2050Z 351DEG 18KT 3906 7568
HAIL...1.00IN
WIND...60MPH
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 8:39 PM EDT | Special Weather Statement | PHI | Sussex | 36 min |
| Jul 31, 8:48 PM EDT | Special Weather Statement | PHI | Sussex | 27 min |
| Jul 31, 9:18 PM EDT | Special Weather Statement | PHI | Sussex | 27 min |
| Aug 1, 2:43 PM EDT | Special Weather Statement | PHI | Kent | 47 min |
| Aug 1, 3:02 PM EDT | Coastal Flood Advisory | PHI | Kent, New Castle, Sussex | 12 hr |
| Aug 1, 3:39 PM EDT | Special Weather Statement | PHI | Kent | 51 min |
| Aug 1, 3:51 PM EDT | Special Weather Statement | PHI | Kent | 39 min |
| Aug 1, 4:00 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 60 min |
| Aug 1, 4:11 PM EDT | Special Weather Statement | PHI | New Castle | 34 min |
| Aug 1, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 21 min |
| Aug 1, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 50 min |
| Aug 1, 5:28 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 47 min |
| Aug 1, 6:16 PM EDT | Special Weather Statement | PHI | Sussex | 14 min |
| Jul 31, 8:00 PM EDT | Special Weather Statement | PHI | Kent | 30 min |
| Jul 31, 8:13 PM EDT | Special Weather Statement | PHI | Queen Anne's | 32 min |
| Jul 31, 8:47 PM EDT | Special Weather Statement | PHI | Caroline | 28 min |
| Aug 1, 4:02 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 45 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2019Severe Thunderstorm Warnings in Delaware, 2019Every severe thunderstorm warning in 2019
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.