Alert archive / Delaware / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 167, NWS Philadelphia/Mount Holly

August 2, 2024New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 2, 2024, 5:05 PM EDT for New Castle County, Delaware. It was in force for 40 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: Aug 2, 2024, 5:05 PM EDT (21:05 UTC)
Expired: Aug 2, 2024, 5:45 PM EDT
In force: 40 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County New Castle County, DE

The radar

The Dover AFB radar (KDOX), 94 km from the middle of the area, began a volume at 21:08 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
Aug 2, 4:07 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.1 hours before the alert went out and 167 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 433 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 1251 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

398 
WUUS51 KPHI 022105
SVRPHI
DEC003-022145-
/O.NEW.KPHI.SV.W.0167.240802T2105Z-240802T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
505 PM EDT Fri Aug 2 2024

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northwestern New Castle County in northern Delaware...

* Until 545 PM EDT.

* At 505 PM EDT, a severe thunderstorm was located over Pleasant
  Hill, or near Elkton, moving east at 15 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Newark, New Castle, Delaware City, Newport, Saint Georges, Mount
  Pleasant, Stanton, Glasgow, Bear, Port Penn, Wilmington Manor, Pike
  Creek, and Brookside.

This includes Interstate 95 in Delaware between mile markers 1 and
12.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3973 7570 3973 7557 3949 7555 3949 7578
      3972 7579
TIME...MOT...LOC 2105Z 273DEG 11KT 3964 7589 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hoeflich

1 follow-up statement

940 
WWUS51 KPHI 022136
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
536 PM EDT Fri Aug 2 2024

DEC003-022146-
/O.EXP.KPHI.SV.W.0167.000000T0000Z-240802T2145Z/
New Castle DE-
536 PM EDT Fri Aug 2 2024

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN NEW CASTLE COUNTY
WILL EXPIRE AT 545 PM EDT...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northern Delaware.

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 3973 7570 3973 7557 3949 7555 3949 7578
      3972 7579
TIME...MOT...LOC 2136Z 273DEG 11KT 3964 7578 

$$

Hoeflich

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 2, 4:17 AM EDT	Excessive Heat Warning	PHI	Kent, New Castle, Sussex	16 hr
Aug 2, 4:32 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	24 min

Nearby

Severe Thunderstorm Warnings in Delaware, 2024 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.