Alert archive / Delaware / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 324, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 8, 2023, 2:05 PM EDT for Kent County, Sussex County, Delaware. It was in force for 40 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
- Sep 8, 2023, 2:05 PM EDT (18:05 UTC)
- Expired
- Sep 8, 2023, 2:45 PM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Kent County, DE, Sussex County, DE
The radar
The Dover AFB radar (KDOX), 7 km from the middle of the area, began a volume at 18:06 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 8, 2:25 PM EDT | HAIL 1 | Milton, DE | Trained spotter reports quarter-sized hail in Milton DE. |
| Sep 8, 2:40 PM EDT | TSTM WND GST 54 | 2 Wnw Lewes, DE | Mesonet station XLEW Lewes. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 6.1 hours before the alert went out and 101 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
- 2819 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 953 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.8
The text
As transmitted.
973
WUUS51 KPHI 081805
SVRPHI
DEC001-005-081845-
/O.NEW.KPHI.SV.W.0324.230908T1805Z-230908T1845Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
205 PM EDT Fri Sep 8 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Central Sussex County in southern Delaware...
Southeastern Kent County in central Delaware...
* Until 245 PM EDT.
* At 205 PM EDT, severe thunderstorms were located along a line
extending from 7 miles south of Big Stone Beach to near Milton to
near Georgetown, moving northeast at 15 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...
Georgetown, Milford, Millsboro, Lewes, Milton, Ellendale and Big
Stone Beach.
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, and
the storm will affect the beaches. For your safety, immediately move
off the beach and seek shelter indoors.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3906 7537 3898 7529 3891 7527 3880 7512
3859 7524 3860 7544 3872 7543 3879 7552
3889 7551
TIME...MOT...LOC 1805Z 223DEG 15KT 3889 7528 3879 7527 3865 7535
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann3 follow-up statements
333
WWUS51 KPHI 081824
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
224 PM EDT Fri Sep 8 2023
DEC001-005-081845-
/O.CON.KPHI.SV.W.0324.000000T0000Z-230908T1845Z/
Sussex DE-Kent DE-
224 PM EDT Fri Sep 8 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR CENTRAL SUSSEX AND SOUTHEASTERN KENT COUNTIES...
At 223 PM EDT, severe thunderstorms were located along a line
extending from 7 miles southeast of Big Stone Beach to near Lewes to
near Georgetown, moving northeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Georgetown, Milford, Millsboro, Lewes, Milton, Ellendale and Big
Stone Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3906 7537 3898 7529 3891 7527 3880 7512
3859 7524 3860 7542 3876 7539 3884 7545
3889 7551
TIME...MOT...LOC 1823Z 222DEG 15KT 3893 7523 3883 7522 3868 7528
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann102
WWUS51 KPHI 081828
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
228 PM EDT Fri Sep 8 2023
DEC001-005-081845-
/O.CON.KPHI.SV.W.0324.000000T0000Z-230908T1845Z/
Sussex DE-Kent DE-
228 PM EDT Fri Sep 8 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR CENTRAL SUSSEX AND SOUTHEASTERN KENT COUNTIES...
At 228 PM EDT, severe thunderstorms were located along a line
extending from 7 miles southeast of Big Stone Beach to near Lewes to
near Georgetown, moving northeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters. At 2:26 PM, quarter size hail was
reported in Milton, DE.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Georgetown, Milford, Millsboro, Lewes, Milton, Ellendale and Big
Stone Beach.
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 3906 7537 3898 7529 3891 7527 3880 7512
3859 7524 3860 7542 3876 7539 3884 7545
3889 7551
TIME...MOT...LOC 1828Z 223DEG 15KT 3893 7523 3883 7522 3868 7528
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MLB506
WWUS51 KPHI 081846
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
246 PM EDT Fri Sep 8 2023
DEC001-005-081856-
/O.EXP.KPHI.SV.W.0324.000000T0000Z-230908T1845Z/
Sussex DE-Kent DE-
246 PM EDT Fri Sep 8 2023
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SUSSEX AND
SOUTHEASTERN KENT COUNTIES HAS EXPIRED...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been allowed to expire. However gusty winds and heavy rain are still
possible with these thunderstorms.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
Remember, a Severe Thunderstorm Warning still remains in effect for
portions of Kent County until 3:00 PM EDT.
LAT...LON 3906 7537 3898 7529 3891 7527 3880 7512
3859 7524 3860 7542 3876 7539 3884 7545
3889 7551
TIME...MOT...LOC 1846Z 223DEG 15KT 3897 7518 3887 7517 3872 7523
$$
MLBThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 9:14 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 30 min |
| Sep 8, 1:21 PM EDT | Special Weather Statement | PHI | Sussex | 24 min |
| Sep 8, 1:51 PM EDT | Special Weather Statement | PHI | Sussex | 24 min |
| Sep 8, 2:15 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 45 min |
| Sep 8, 2:46 PM EDT | Special Weather Statement | PHI | Kent | 29 min |
| Sep 8, 2:51 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 39 min |
| Sep 8, 3:27 PM EDT | Special Weather Statement | PHI | Kent, New Castle | 33 min |
| Sep 8, 3:31 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 44 min |
| Sep 8, 3:32 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 43 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 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.