Alert archive / Delaware / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 115, NWS Philadelphia/Mount Holly

July 12, 2022New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 12, 2022, 5:29 PM EDT for New Castle County, Delaware. It was in force for 31 min. 8 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 12, 2022, 5:29 PM EDT (21:29 UTC)
Expired: Jul 12, 2022, 6:00 PM EDT
In force: 31 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County New Castle County, DE

The radar

The Dover AFB radar (KDOX), 79 km from the middle of the area, began a volume at 21:28 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 12, 5:36 PM EDT	TSTM WND DMG	2 Wsw Mount Pleasant, DE	OBSERVER REPORTS SIGNIFICANT DAMAGE IN THE AREA INCLUDING TREES DOWN AND POWER OUTAGES. TIME ESTIMATED FROM RADAR.
Jul 12, 5:37 PM EDT	TSTM WND DMG	2 W Mount Pleasant, DE	SMALL TREE DOWNED ONTO POWER LINES, NUMEROUS LARGE BRANCHES DOWN IN THE AREA. TIME ESTIMATED VIA RADAR.
Jul 12, 5:37 PM EDT	TSTM WND DMG	3 Sw Summit Bridge, DE	AMATEUR RADIO OPERATOR REPORTS MULTIPLE TREES DOWN ON CAZIER DRIVE. PICTURES PROVIDED. TIME ESTIMATED VIA RADAR.
Jul 12, 5:39 PM EDT	TSTM WND DMG	3 Nw Saint Georges, DE	REPORT FROM MPING: TREES UPROOTED OR SNAPPED; ROOF BLOWN OFF.
Jul 12, 5:40 PM EDT	TSTM WND GST 87	3 W Mount Pleasant, DE	MESONET STATION FW7093 MIDDLETOWN REPORTED A THUNDERSTORM WIND GUST OF 87 MPH.
Jul 12, 5:40 PM EDT	TSTM WND GST 87	3 W Mount Pleasant, DE	UPDATES PREVIOUS TSTM WND GST REPORT FROM 3 W MOUNT PLEASANT. MESONET STATION FW7093 MIDDLETOWN REPORTED A THUNDERSTORM WIND GUST OF 87 MPH. CO-LOCATED OBSERVER ALSO REPORTED MANY TREES DAMAGED, SOME DAMAGE TO HOUSE SIDING, AND GARAGE DOORS BLOWN OUT.
Jul 12, 5:40 PM EDT	HAIL 1	1 Wnw Odessa, DE	REPORT OF QUARTER SIZE HAIL. TIME ESTIMATED VIA RADAR.
Jul 12, 5:48 PM EDT	TSTM WND DMG	Delaware City, DE	REPORT OF MULTIPLE TREES DOWN ON ADAMS STREET. PICTURES PROVIDED ON SOCIAL MEDIA. TIME ESTIMATED VIA RADAR.

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 12, 5:05 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.5 hours before the alert went out and 175 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 0 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

920 
WUUS51 KPHI 122129
SVRPHI
DEC003-122200-
/O.NEW.KPHI.SV.W.0115.220712T2129Z-220712T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
529 PM EDT Tue Jul 12 2022

The National Weather Service in Mount Holly NJ has issued a

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

* Until 600 PM EDT.

* At 529 PM EDT, a severe thunderstorm was located over Hollywood
  Beach, or 8 miles southwest of Elkton, moving east at 45 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...
  Middletown, Salem, Delaware City, Saint Georges, Port Penn, Mount
  Pleasant, Glasgow, Bear and Odessa.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Mount Holly NJ.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3964 7556 3957 7550 3964 7548 3961 7541
      3961 7545 3958 7549 3955 7545 3954 7542
      3954 7553 3951 7553 3951 7548 3949 7553
      3950 7553 3950 7554 3946 7554 3942 7541
      3941 7542 3940 7577 3961 7578
TIME...MOT...LOC 2129Z 265DEG 40KT 3950 7591 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MPS

1 follow-up statement

731 
WWUS51 KPHI 122156
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
556 PM EDT Tue Jul 12 2022

DEC003-122205-
/O.EXP.KPHI.SV.W.0115.000000T0000Z-220712T2200Z/
New Castle DE-
556 PM EDT Tue Jul 12 2022

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEW CASTLE COUNTY
WILL EXPIRE AT 600 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
northern Delaware...and southern New Jersey.

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 3964 7556 3957 7550 3964 7548 3961 7541
      3961 7545 3958 7549 3955 7545 3954 7542
      3954 7553 3951 7553 3951 7548 3949 7553
      3950 7553 3950 7554 3946 7554 3942 7541
      3941 7542 3940 7577 3961 7578
TIME...MOT...LOC 2155Z 265DEG 40KT 3952 7556 

$$

MPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 6:28 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Kent	18 min
Jul 12, 7:12 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	48 min
Jul 12, 7:37 PM EDT	Severe Thunderstorm Warning Destructive damage threat	PHI	Kent, Sussex	23 min
Jul 12, 7:54 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	28 min
Jul 12, 7:56 PM EDT	Special Weather Statement	PHI	Sussex	34 min

Nearby

Severe Thunderstorm Warnings in Delaware, 2022 Every severe thunderstorm warning in 2022

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.