Alert archive / Delaware / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 70, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 16, 2023, 11:40 AM EDT for Caroline County, Maryland; Kent County, Sussex County, Delaware. It was in force for 50 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
- Jun 16, 2023, 11:40 AM EDT (15:40 UTC)
- Expired
- Jun 16, 2023, 12:30 PM EDT
- In force
- 50 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, Caroline County, MD
The radar
The Dover AFB radar (KDOX), 16 km from the middle of the area, began a volume at 15:44 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 |
|---|---|---|---|
| Jun 16, 11:06 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 3.7 hours before the alert went out and 107 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
- 1057 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 816 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.9
The text
As transmitted.
918
WUUS51 KPHI 161540
SVRPHI
DEC001-005-MDC011-161630-
/O.NEW.KPHI.SV.W.0070.230616T1540Z-230616T1630Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1140 AM EDT Fri Jun 16 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Sussex County in southern Delaware...
Southern Kent County in central Delaware...
East central Caroline County in eastern Maryland...
* Until 1230 PM EDT.
* At 1139 AM EDT, a severe thunderstorm was located near Denton, or
16 miles north of Hurlock, moving northeast 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...
Milford, Denton, Harrington, Bowers, Big Stone Beach, Andrewsville,
Felton, Greenwood, 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 3877 7580 3888 7584 3910 7538 3886 7523
TIME...MOT...LOC 1539Z 246DEG 27KT 3885 7575
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann1 follow-up statement
305
WWUS51 KPHI 161553
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1153 AM EDT Fri Jun 16 2023
MDC011-161602-
/O.CAN.KPHI.SV.W.0070.000000T0000Z-230616T1630Z/
Caroline MD-
1153 AM EDT Fri Jun 16 2023
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CAROLINE COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 600 PM EDT for
central and southern Delaware.
LAT...LON 3893 7573 3910 7538 3886 7523 3878 7571
TIME...MOT...LOC 1552Z 247DEG 26KT 3886 7565
$$
DEC001-005-161630-
/O.CON.KPHI.SV.W.0070.000000T0000Z-230616T1630Z/
Sussex DE-Kent DE-
1153 AM EDT Fri Jun 16 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT
FOR NORTHWESTERN SUSSEX AND SOUTHERN KENT COUNTIES...
At 1152 AM EDT, a severe thunderstorm was located over Andrewsville,
or 18 miles northwest of Georgetown, moving northeast at 30 mph.
HAZARD...60 mph wind gusts and half dollar 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...
Milford, Harrington, Bowers, Big Stone Beach, Andrewsville, Felton,
Greenwood, 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 3893 7573 3910 7538 3886 7523 3878 7571
TIME...MOT...LOC 1552Z 247DEG 26KT 3886 7565
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 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 |
|---|---|---|---|---|
| Jun 16, 11:29 AM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 31 min |
| Jun 16, 11:20 AM EDT | Severe Thunderstorm Warning | PHI | New Castle | 40 min |
| Jun 16, 11:46 AM EDT | Severe Thunderstorm Warning | PHI | New Castle | 59 min |
| Jun 16, 12:28 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 47 min |
| Jun 16, 12:46 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Jun 16, 4:05 PM EDT | Special Weather Statement | PHI | Sussex | 25 min |
| Jun 16, 4:29 PM EDT | Special Weather Statement | PHI | Sussex | 46 min |
| Jun 16, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 48 min |
| Jun 16, 5:45 PM EDT | Areal Flood Advisory | PHI | Sussex | 2 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.