Alert archive / Maryland / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 142, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 16, 2024, 10:17 PM EDT for Kent County, New Castle County, Delaware; 4 counties in Maryland. It was in force for 58 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 16, 2024, 10:17 PM EDT (02:17 UTC)
- Expired
- Jul 16, 2024, 11:15 PM EDT
- In force
- 58 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, New Castle County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 65 km from the middle of the area, began a volume at 02:19 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 16, 10:50 PM EDT | TSTM WND DMG | Church Hill, MD | Some trees down in Church Hill. Time estimated from radar. |
| Jul 16, 11:15 PM EDT | TSTM WND DMG | Henderson, MD | Large tree down. Time estimated from radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 16, 3:36 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.3 hours before the alert went out and 145 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
- 2487 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1346 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 9.7
The text
As transmitted.
833
WUUS51 KPHI 170217
SVRPHI
DEC001-003-MDC011-029-035-041-170315-
/O.NEW.KPHI.SV.W.0142.240717T0217Z-240717T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1017 PM EDT Tue Jul 16 2024
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern New Castle County in northern Delaware...
Northwestern Kent County in central Delaware...
Northern Talbot County in eastern Maryland...
Queen Anne's County in northeastern Maryland...
Northern Caroline County in eastern Maryland...
Kent County in northeastern Maryland...
* Until 1115 PM EDT.
* At 1017 PM EDT, severe thunderstorms were located along a line
extending from Brantwood to near Betterton to Dobbins Island,
moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Dover, Newark, Middletown, Easton, Centerville, Talbot, Smyrna,
Chestertown, Centreville, Romancoke, Clayton, Oakland, Delaware
City, Ridgely, Cheswold, Rock Hall, Church Hill, Millington,
Sudlersville, and Betterton.
This includes Interstate 95 in Delaware between mile markers 0 and 2.
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.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3904 7630 3898 7628 3900 7617 3901 7620
3901 7621 3917 7628 3932 7618 3937 7611
3938 7577 3966 7579 3961 7557 3948 7557
3932 7540 3879 7605 3882 7630 3883 7619
3897 7625 3891 7624 3894 7628 3884 7637
TIME...MOT...LOC 0217Z 290DEG 25KT 3955 7582 3934 7612 3907 7644
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann2 follow-up statements
936
WWUS51 KPHI 170246
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1046 PM EDT Tue Jul 16 2024
DEC001-003-MDC011-029-035-041-170315-
/O.CON.KPHI.SV.W.0142.000000T0000Z-240717T0315Z/
New Castle DE-Kent DE-Talbot MD-Queen Anne's MD-Caroline MD-Kent MD-
1046 PM EDT Tue Jul 16 2024
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR SOUTHWESTERN NEW CASTLE...NORTHWESTERN KENT...NORTHERN TALBOT...
QUEEN ANNE'S...NORTHERN CAROLINE AND KENT COUNTIES...
At 1045 PM EDT, severe thunderstorms were located along a line
extending from near Port Penn to near Millington to Overton, moving
east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Dover, Newark, Middletown, Easton, Centerville, Talbot, Smyrna,
Chestertown, Centreville, Clayton, Oakland, Delaware City, Ridgely,
Cheswold, Rock Hall, Church Hill, Millington, Sudlersville,
Goldsboro, and Queen Anne.
This includes Interstate 95 in Delaware between mile markers 0 and 2.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3902 7631 3897 7622 3900 7617 3901 7620
3914 7625 3937 7599 3938 7577 3966 7579
3961 7557 3948 7557 3932 7540 3879 7605
3882 7630 3883 7619 3896 7624 3897 7625
3893 7631 3895 7631 3885 7636
TIME...MOT...LOC 0245Z 290DEG 25KT 3948 7559 3927 7589 3900 7621
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann989
WWUS51 KPHI 170309
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1109 PM EDT Tue Jul 16 2024
MDC029-170319-
/O.CAN.KPHI.SV.W.0142.000000T0000Z-240717T0315Z/
Kent MD-
1109 PM EDT Tue Jul 16 2024
...THE SEVERE THUNDERSTORM WARNING FOR KENT COUNTY IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
central and northern Delaware...and eastern and northeastern
Maryland.
LAT...LON 3916 7607 3917 7604 3918 7606 3922 7605
3925 7597 3924 7594 3926 7585 3924 7580
3925 7576 3933 7576 3942 7554 3942 7550
3932 7540 3879 7606 3893 7617
TIME...MOT...LOC 0309Z 294DEG 28KT 3934 7551 3914 7564 3895 7602
$$
DEC001-003-MDC011-035-041-170315-
/O.CON.KPHI.SV.W.0142.000000T0000Z-240717T0315Z/
New Castle DE-Kent DE-Talbot MD-Queen Anne's MD-Caroline MD-
1109 PM EDT Tue Jul 16 2024
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR SOUTHWESTERN NEW CASTLE...NORTHWESTERN KENT...NORTHEASTERN
TALBOT...QUEEN ANNE'S AND NORTHERN CAROLINE COUNTIES...
At 1109 PM EDT, severe thunderstorms were located along a line
extending from Woodland Beach to Hazlettville to near Starr, moving
southeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Dover, Easton, Centerville, Smyrna, Centreville, Clayton, Oakland,
Ridgely, Cheswold, Church Hill, Millington, Sudlersville, Goldsboro,
Queen Anne, Hartly, Starr, Woodland Beach, Jumptown, Delaney Corner,
and Crumpton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3916 7607 3917 7604 3918 7606 3922 7605
3925 7597 3924 7594 3926 7585 3924 7580
3925 7576 3933 7576 3942 7554 3942 7550
3932 7540 3879 7606 3893 7617
TIME...MOT...LOC 0309Z 294DEG 28KT 3934 7551 3914 7564 3895 7602
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 8:23 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 67 min |
| Jul 16, 9:04 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 56 min |
| Jul 16, 11:08 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle, Sussex | 67 min |
| Jul 17, 7:56 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 44 min |
| Jul 17, 7:58 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 62 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2024Severe Thunderstorm Warnings in Delaware, 2024Every severe thunderstorm warning in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.