Alert archive / Delaware / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 150, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 2, 2023, 8:57 PM EDT for Kent County, Sussex County, Delaware. It was in force for 48 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 2, 2023, 8:57 PM EDT (00:57 UTC)
- Expired
- Jul 2, 2023, 9:45 PM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Sussex County, DE
The radar
The Dover AFB radar (KDOX), 17 km from the middle of the area, began a volume at 01:00 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 2, 4:31 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 1.0 hours before the alert went out and 113 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
- 2220 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 1071 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 7.3
The text
As transmitted.
508
WUUS51 KPHI 030057
SVRPHI
DEC001-005-030145-
/O.NEW.KPHI.SV.W.0150.230703T0057Z-230703T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
857 PM EDT Sun Jul 2 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
North central Sussex County in southern Delaware...
Southern Kent County in central Delaware...
* Until 945 PM EDT.
* At 856 PM EDT, a severe thunderstorm was located near Harrington,
or 13 miles south of Dover, moving east 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...
Milford, Harrington, Milton, Ellendale, Woodside, Viola, Big Stone
Beach, Sandtown, Andrewsville, Felton, Frederica, Houston,
Farmington, Riverview and Woodside East.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3889 7573 3901 7574 3910 7569 3898 7520
3877 7533
TIME...MOT...LOC 0056Z 288DEG 30KT 3897 7559
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich1 follow-up statement
971
WWUS51 KPHI 030113
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
913 PM EDT Sun Jul 2 2023
DEC001-005-030145-
/O.CON.KPHI.SV.W.0150.000000T0000Z-230703T0145Z/
Sussex DE-Kent DE-
913 PM EDT Sun Jul 2 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR NORTH CENTRAL SUSSEX AND SOUTHEASTERN KENT COUNTIES...
At 912 PM EDT, a severe thunderstorm was located near Harrington, or
14 miles south of Dover, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Milford, Harrington, Milton, Ellendale, Viola, Big Stone Beach,
Andrewsville, Felton, Frederica, Houston, Farmington and Riverview.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3888 7570 3905 7556 3900 7529 3898 7520
3877 7533
TIME...MOT...LOC 0112Z 287DEG 27KT 3895 7551
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
HoeflichThe 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 | Kent, Sussex | 51 min |
| Jul 2, 8:52 PM EDT | Areal Flood Advisory | PHI | New Castle | 2 hr |
| Jul 3, 7:31 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 59 min |
| Jul 3, 7:43 PM EDT | Tornado Warning | PHI | Sussex | 17 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.