Alert archive / Delaware / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 154, NWS Philadelphia/Mount Holly

August 5, 2022Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 5, 2022, 4:23 PM EDT for Sussex County, Delaware. It was in force for 22 min. 1 report 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: Aug 5, 2022, 4:23 PM EDT (20:23 UTC)
Expired: Aug 5, 2022, 4:45 PM EDT
In force: 22 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

County Sussex County, DE

The radar

The Dover AFB radar (KDOX), 35 km from the middle of the area, began a volume at 20:26 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
Aug 5, 4:30 PM EDT	TSTM WND DMG	Delmar, DE	911 CALL CENTER REPORTS TREE LIMBS DOWN ON EAST GROVE STREET IN DELMAR. TIME ESTIMATED VIA RADAR.

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, 8.4 hours before the alert went out and 67 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: 1778 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 906 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

019 
WUUS51 KPHI 052023
SVRPHI
DEC005-052115-
/O.NEW.KPHI.SV.W.0154.220805T2023Z-220805T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
423 PM EDT Fri Aug 5 2022

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southwestern Sussex County in southern Delaware...

* Until 515 PM EDT.

* At 423 PM EDT, a severe thunderstorm was located over Delmar, or
  near Salisbury, moving north at 15 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Laurel, Delmar, Sycamore and Bethel. 

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.

Wind damage with this storm will occur before any rain or lightning.
Do not wait for the sound of thunder before taking cover. SEEK
SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.

&&

LAT...LON 3846 7568 3863 7570 3860 7533 3845 7539
TIME...MOT...LOC 2023Z 187DEG 14KT 3842 7555 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MPS

1 follow-up statement

452 
WWUS51 KPHI 052045
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
445 PM EDT Fri Aug 5 2022

DEC005-052054-
/O.CAN.KPHI.SV.W.0154.000000T0000Z-220805T2115Z/
Sussex DE-
445 PM EDT Fri Aug 5 2022

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN SUSSEX COUNTY IS
CANCELLED...
                
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 has been cancelled.

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 3846 7568 3863 7570 3860 7533 3845 7539
TIME...MOT...LOC 2042Z 187DEG 14KT 3850 7554 

$$

MPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 8:06 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Kent, Sussex	39 min
Aug 4, 8:37 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	38 min
Aug 4, 9:04 PM EDT	Special Weather Statement	PHI	Sussex	26 min
Aug 5, 2:06 PM EDT	Special Weather Statement	PHI	Sussex	24 min
Aug 5, 2:14 PM EDT	Special Weather Statement	PHI	Sussex	31 min
Aug 5, 2:50 PM EDT	Special Weather Statement	PHI	Sussex	25 min
Aug 5, 3:15 PM EDT	Areal Flood Advisory	PHI	Sussex	114 min
Aug 5, 3:17 PM EDT	Special Weather Statement	PHI	Sussex	28 min
Aug 5, 3:21 PM EDT	Special Weather Statement	PHI	Sussex	24 min
Aug 5, 3:43 PM EDT	Special Weather Statement	PHI	Sussex	32 min
Aug 5, 3:52 PM EDT	Special Weather Statement	PHI	Kent	23 min
Aug 5, 4:12 PM EDT	Special Weather Statement	PHI	Sussex	48 min
Aug 5, 4:58 PM EDT	Areal Flood Advisory	PHI	Kent, Sussex	2 hr

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.