Alert archive / Maryland / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 247, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 21, 2019, 10:13 PM EDT for Cecil County, Maryland; Salem County, New Jersey; New Castle County, Delaware. It was in force for 47 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 21, 2019, 10:13 PM EDT (02:13 UTC)
- Expired
- Jul 21, 2019, 11:00 PM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties New Castle County, DE, Cecil County, MD, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 86 km from the middle of the area, began a volume at 02:14 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, 2.2 hours before the alert went out and 172 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
- 157 J/kg
- Mixed-layer CIN
- -308 J/kg
- Mixed-layer LCL
- 1994 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -73 m²/s²
- 0-3 km storm-relative helicity
- -77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
313
WUUS51 KPHI 220213
SVRPHI
DEC003-MDC015-NJC033-220300-
/O.NEW.KPHI.SV.W.0247.190722T0213Z-190722T0300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1013 PM EDT Sun Jul 21 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
New Castle County in northern Delaware...
Eastern Cecil County in northeastern Maryland...
Salem County in southern New Jersey...
* Until 1100 PM EDT.
* At 1013 PM EDT, severe thunderstorms were located along a line
extending from Barksdale to near Glasgow to Bohemias Mills, moving
east at 30 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...
Wilmington, Newark, Middletown, Elkton, Pennsville, Carneys Point,
Elsmere, New Castle, Penns Grove, Salem, North East, Woodstown,
Alloway, Quinton, Delaware City, Newport, Cecilton, Arden, Warwick
and Barksdale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3981 7556 3981 7544 3962 7526 3945 7542
3941 7542 3946 7554 3957 7551 3962 7557
3966 7552 3972 7551 3962 7561 3958 7556
3958 7557 3946 7559 3941 7554 3939 7592
3954 7588 3964 7597
TIME...MOT...LOC 0213Z 264DEG 27KT 3965 7582 3956 7573 3945 7579
HAIL...1.00IN
WIND...60MPH
$$
Staarmann2 follow-up statements
713
WWUS51 KPHI 220224
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1024 PM EDT Sun Jul 21 2019
DEC003-MDC015-NJC033-220300-
/O.CON.KPHI.SV.W.0247.000000T0000Z-190722T0300Z/
New Castle DE-Cecil MD-Salem NJ-
1024 PM EDT Sun Jul 21 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT
FOR NEW CASTLE...NORTHEASTERN CECIL AND SALEM COUNTIES...
At 1022 PM EDT, severe thunderstorms were located along a line
extending from Newark to Saint Georges to Middletown, moving east at
30 mph. Law enforcement relayed several reports of wind damage
across Cecil County, especially near Elkton.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Law enforcement.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Wilmington, Newark, Middletown, Elkton, Pennsville, Carneys Point,
Elsmere, New Castle, Penns Grove, Salem, North East, Woodstown,
Alloway, Quinton, Delaware City, Newport, Arden, Barksdale, Stanton
and Glasgow.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These storms have a history of producing wind damage across Cecil
County. SEEK SHELTER NOW inside a sturdy structure and stay away
from windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3981 7556 3981 7544 3962 7526 3945 7542
3941 7542 3946 7554 3957 7551 3962 7557
3966 7552 3972 7551 3962 7561 3958 7556
3958 7557 3946 7559 3941 7554 3943 7586
3954 7584 3964 7597
TIME...MOT...LOC 0222Z 264DEG 27KT 3966 7575 3957 7566 3946 7572
HAIL...1.00IN
WIND...60MPH
$$
Staarmann063
WWUS51 KPHI 220239
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1039 PM EDT Sun Jul 21 2019
MDC015-220248-
/O.CAN.KPHI.SV.W.0247.000000T0000Z-190722T0300Z/
Cecil MD-
1039 PM EDT Sun Jul 21 2019
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CECIL 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 3982 7550 3979 7542 3978 7544 3962 7526
3949 7539 3948 7554 3957 7551 3962 7557
3967 7551 3971 7549 3972 7551 3962 7561
3959 7561 3959 7557 3950 7558 3948 7561
3964 7579 3966 7579
TIME...MOT...LOC 0238Z 254DEG 25KT 3965 7555
$$
DEC003-NJC033-220300-
/O.CON.KPHI.SV.W.0247.000000T0000Z-190722T0300Z/
New Castle DE-Salem NJ-
1039 PM EDT Sun Jul 21 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT
FOR NORTHERN NEW CASTLE AND NORTHWESTERN SALEM COUNTIES...
At 1038 PM EDT, a severe thunderstorm was located over New Castle, or
near Wilmington, moving east at 30 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Wilmington, Newark, Pennsville, Carneys Point, Elsmere, New Castle,
Penns Grove, Salem, Woodstown, Alloway, Quinton, Delaware City,
Newport, Arden, Stanton, Glasgow, Bear, Hancocks Bridge, Wilmington
Manor and Saint Georges.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3982 7550 3979 7542 3978 7544 3962 7526
3949 7539 3948 7554 3957 7551 3962 7557
3967 7551 3971 7549 3972 7551 3962 7561
3959 7561 3959 7557 3950 7558 3948 7561
3964 7579 3966 7579
TIME...MOT...LOC 0238Z 254DEG 25KT 3965 7555
HAIL...0.75IN
WIND...60MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 9:30 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 45 min |
| Jul 21, 9:44 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 46 min |
| Jul 21, 9:55 PM EDT | Areal Flood Advisory | PHI | Cecil | 87 min |
| Jul 22, 3:47 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 58 min |
| Jul 22, 4:11 PM EDT | Areal Flood Advisory | PHI | Cecil | 4 hr |
| Jul 22, 4:16 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 59 min |
| Jul 22, 4:21 PM EDT | Areal Flood Advisory | PHI | Cecil, Kent | 2 hr |
| Jul 22, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 61 min |
| Jul 21, 8:25 PM EDT | Special Weather Statement | PHI | Warren | 50 min |
| Jul 21, 8:44 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 46 min |
| Jul 21, 9:05 PM EDT | Special Weather Statement | PHI | Morris | 25 min |
| Jul 21, 9:24 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Warren | 51 min |
| Jul 21, 10:12 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Monmouth, Morris, Somerset | 48 min |
| Jul 21, 10:15 PM EDT | Special Marine Warning | PHI | 60 min | |
| Jul 21, 10:54 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 25 min |
| Jul 21, 10:58 PM EDT | Special Marine Warning | PHI | 62 min | |
| Jul 21, 11:02 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 31 min |
| Jul 21, 11:27 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 48 min |
| Jul 21, 11:31 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 44 min |
| Jul 21, 11:40 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 50 min |
| Jul 21, 11:54 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 51 min |
| Jul 22, 12:00 AM EDT | Special Marine Warning | PHI | 90 min | |
| Jul 22, 12:16 AM EDT | Special Weather Statement | PHI | Mercer | 29 min |
| Jul 22, 12:34 AM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 41 min |
| Jul 22, 1:50 PM EDT | Special Weather Statement | PHI | Warren | 25 min |
| Jul 22, 2:00 PM EDT | Special Weather Statement | PHI | Sussex | 45 min |
| Jul 22, 2:13 PM EDT | Special Weather Statement | PHI | Warren | 32 min |
| Jul 22, 2:35 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 40 min |
| Jul 22, 2:58 PM EDT | Small Craft Advisory | PHI | 27 hr | |
| Jul 22, 3:02 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex, Warren | 4 hr |
| Jul 22, 3:12 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 48 min |
| Jul 22, 3:33 PM EDT | Areal Flood Advisory | PHI | Warren | 7 hr |
| Jul 22, 3:43 PM EDT | Flash Flood Warning | PHI | Sussex | 4 hr |
| Jul 22, 4:24 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Sussex, Warren | 51 min |
| Jul 22, 4:40 PM EDT | Areal Flood Advisory | PHI | Camden, Cumberland, Gloucester, Salem | 114 min |
| Jul 22, 4:52 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jul 22, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 44 min |
| Jul 22, 5:04 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 41 min |
| Jul 22, 5:17 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Warren | 73 min |
| Jul 22, 5:34 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Sussex, Warren | 4 hr |
| Jul 22, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Mercer and 4 more | 80 min |
| Jul 22, 5:43 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Hunterdon, Mercer, Middlesex and 4 more | 3 hr |
| Jul 22, 5:50 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset and 1 more | 40 min |
| Jul 22, 5:52 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jul 22, 6:09 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Cape May, Cumberland, Ocean | 51 min |
| Jul 22, 6:12 PM EDT | Special Marine Warning | PHI | 93 min | |
| Jul 22, 6:21 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Cumberland, Monmouth, Ocean | 4 hr |
| Jul 22, 6:27 PM EDT | Special Marine Warning | PHI | 48 min | |
| Jul 22, 6:27 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Monmouth, Morris, Somerset | 34 min |
| Jul 22, 6:35 PM EDT | Flash Flood Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 4 hr |
| Jul 22, 6:38 PM EDT | Special Marine Warning | PHI | 67 min | |
| Jul 22, 6:54 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean | 51 min |
| Jul 22, 7:39 PM EDT | Special Marine Warning | PHI | 96 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2019Severe Thunderstorm Warnings in New Jersey, 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.