Alert archive / Delaware / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 156, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 3, 2023, 7:31 PM EDT for Caroline County, Maryland; Kent County, Sussex County, Delaware. It was in force for 59 min. 5 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 3, 2023, 7:31 PM EDT (23:31 UTC)
- Expired
- Jul 3, 2023, 8:30 PM EDT
- In force
- 59 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Kent County, DE, Sussex County, DE, Caroline County, MD
The radar
The Dover AFB radar (KDOX), 25 km from the middle of the area, began a volume at 23:32 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 3, 7:35 PM EDT | TSTM WND DMG | Federalsburg, MD | Trees down. Time estimated from radar. |
| Jul 3, 7:48 PM EDT | TSTM WND DMG | Seaford, DE | Tree limbs down onto power lines. Power outages reported. Time estimatd from radar. |
| Jul 3, 7:50 PM EDT | TSTM WND DMG | Bridgeville, DE | Tree limbs down onto power lines. Approximately 2100 customers without power from the Bridgeville to Seaford to Blades areas. Time estimated from radar. |
| Jul 3, 8:15 PM EDT | HAIL 0.25 | 2 Sse Frederica, DE | Pea size hail reported at this location. |
| Jul 3, 8:15 PM EDT | HAIL 0.25 | 2 Sse Frederica, DE | Pea size hail reported at this location. |
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 3, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.5 hours before the alert went out and 83 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
- 1776 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 1219 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 6.1
The text
As transmitted.
843
WUUS51 KPHI 032331
SVRPHI
DEC001-005-MDC011-040030-
/O.NEW.KPHI.SV.W.0156.230703T2331Z-230704T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
731 PM EDT Mon Jul 3 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Sussex County in southern Delaware...
Southern Kent County in central Delaware...
Southeastern Caroline County in eastern Maryland...
* Until 830 PM EDT.
* At 730 PM EDT, severe thunderstorms were located along a line
extending from Griffin to near Hurlock to near Secretary, moving
east at 35 mph. This storm has a history of producing destructive
winds in Talbot County, MD.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
* Locations impacted include...
Georgetown, Milford, Seaford, Denton, Millsboro, Laurel,
Harrington, Federalsburg, Milton, Bridgeville, Delmar, Dagsboro,
Ellendale, Smithville, Gumboro, Agner, Andrewsville, Harmony,
Sycamore and Griffin.
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 3846 7569 3864 7571 3869 7577 3868 7580
3870 7580 3871 7584 3870 7588 3893 7593
3902 7530 3864 7519 3845 7532 3845 7537
TIME...MOT...LOC 2330Z 272DEG 30KT 3887 7589 3867 7584 3856 7591
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Staarmann3 follow-up statements
366
WWUS51 KPHI 032349
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
749 PM EDT Mon Jul 3 2023
DEC001-005-MDC011-040030-
/O.CON.KPHI.SV.W.0156.000000T0000Z-230704T0030Z/
Sussex DE-Kent DE-Caroline MD-
749 PM EDT Mon Jul 3 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR SUSSEX...SOUTHERN KENT AND SOUTHEASTERN CAROLINE COUNTIES...
At 749 PM EDT, severe thunderstorms were located along a line
extending from near Denton to near Bridgeville to Sharptown, moving
east at 40 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Georgetown, Milford, Seaford, Denton, Millsboro, Laurel, Harrington,
Federalsburg, Milton, Bridgeville, Dagsboro, Ellendale, Smithville,
Agner, Sycamore, Big Stone Beach, Andrewsville, Blades, Greenwood and
Frederica.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3851 7570 3864 7571 3869 7577 3868 7580
3870 7580 3871 7584 3870 7588 3894 7586
3902 7530 3864 7519 3848 7530
TIME...MOT...LOC 2349Z 265DEG 33KT 3892 7573 3870 7563 3855 7569
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Staarmann420
WWUS51 KPHI 040002
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
802 PM EDT Mon Jul 3 2023
DEC001-005-MDC011-040030-
/O.CON.KPHI.SV.W.0156.000000T0000Z-230704T0030Z/
Sussex DE-Kent DE-Caroline MD-
802 PM EDT Mon Jul 3 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR SUSSEX...SOUTHERN KENT AND SOUTHEASTERN CAROLINE COUNTIES...
At 801 PM EDT, severe thunderstorms were located along a line
extending from Harrington to 6 miles southeast of Bridgeville to
near Laurel, moving east at 35 mph. This storm has a history of
producing significant wind damage in eastern Maryland.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Georgetown, Milford, Seaford, Millsboro, Laurel, Harrington,
Federalsburg, Milton, Bridgeville, Dagsboro, Ellendale, Smithville,
Agner, Sycamore, Big Stone Beach, Andrewsville, Blades, Greenwood,
Frederica and Houston.
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.
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 3851 7570 3865 7572 3869 7577 3868 7580
3870 7580 3871 7584 3870 7588 3878 7577
3896 7573 3902 7530 3864 7519 3848 7530
TIME...MOT...LOC 0001Z 271DEG 30KT 3892 7561 3870 7551 3859 7558
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Staarmann334
WWUS51 KPHI 040023
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
823 PM EDT Mon Jul 3 2023
DEC001-005-MDC011-040032-
/O.EXP.KPHI.SV.W.0156.000000T0000Z-230704T0030Z/
Sussex DE-Kent DE-Caroline MD-
823 PM EDT Mon Jul 3 2023
...THE SEVERE THUNDERSTORM WARNING FOR SUSSEX...SOUTHERN KENT AND
SOUTHEASTERN CAROLINE COUNTIES WILL EXPIRE AT 830 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central and southern Delaware...and eastern Maryland.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3851 7570 3865 7572 3869 7577 3868 7580
3870 7580 3871 7584 3870 7588 3878 7577
3896 7573 3902 7530 3864 7519 3848 7530
TIME...MOT...LOC 0022Z 272DEG 30KT 3891 7539 3869 7529 3858 7536
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 8:09 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 51 min |
| Jul 3, 6:27 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 63 min |
| Jul 3, 7:00 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 45 min |
| Jul 3, 7:43 PM EDT | Tornado Warning | PHI | Caroline | 17 min |
| Jul 2, 8:52 PM EDT | Areal Flood Advisory | PHI | New Castle | 2 hr |
| Jul 2, 8:57 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 48 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2023Severe Thunderstorm Warnings in Maryland, 2023Every severe thunderstorm warning in 2023
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.