Alert archive / Maryland / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 124, NWS Philadelphia/Mount Holly

July 12, 2022Caroline County, Maryland; Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 12, 2022, 8:09 PM EDT for Caroline County, Maryland; Sussex County, Delaware. It was in force for 21 min. 2 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, 8:09 PM EDT (00:09 UTC)
Expired: Jul 12, 2022, 8:30 PM EDT
In force: 21 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

Counties Sussex County, DE, Caroline County, MD

The radar

The Dover AFB radar (KDOX), 24 km from the middle of the area, began a volume at 00:11 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, 8:13 PM EDT	TSTM WND DMG	1 Nw Seaford, DE	POWER LINES DOWN NEAR MAGNOLIA DRIVE AND CHERRY BLOSSOM LANE IN SEAFORD. TIME ESTIMATED FROM RADAR.
Jul 12, 8:13 PM EDT	TSTM WND DMG	1 W Seaford, DE	REPORT OF A TREE AND WIRES FALLEN ONTO A VEHICLE ON N BROADFORD STREET IN SEAFORD. TIME ESTIMATED FROM 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

Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.2 hours before the alert went out and 82 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: 1252 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 998 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

068 
WUUS51 KPHI 130009
SVRPHI
DEC005-MDC011-130100-
/O.NEW.KPHI.SV.W.0124.220713T0009Z-220713T0100Z/

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

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southwestern Sussex County in southern Delaware...
  Southeastern Caroline County in eastern Maryland...

* Until 900 PM EDT.

* At 809 PM EDT, a severe thunderstorm was located over Seaford, or
  13 miles east of Hurlock, moving east at 30 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Georgetown, Seaford, Millsboro, Laurel, Bridgeville, Sycamore and
  Blades.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3859 7571 3864 7571 3868 7576 3877 7575
      3875 7527 3854 7531
TIME...MOT...LOC 0009Z 271DEG 25KT 3868 7563 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Staarmann

2 follow-up statements

983 
WWUS51 KPHI 130019
SVSPHI

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

MDC011-130029-
/O.CAN.KPHI.SV.W.0124.000000T0000Z-220713T0100Z/
Caroline MD-
819 PM EDT Tue Jul 12 2022

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN 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 1000 PM EDT for
eastern Maryland.

LAT...LON 3859 7571 3869 7572 3877 7565 3875 7527
      3858 7530
TIME...MOT...LOC 0019Z 269DEG 22KT 3869 7560 

$$

DEC005-130100-
/O.CON.KPHI.SV.W.0124.000000T0000Z-220713T0100Z/
Sussex DE-
819 PM EDT Tue Jul 12 2022

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR WEST CENTRAL SUSSEX COUNTY...

At 819 PM EDT, a severe thunderstorm was located over Seaford, or 11
miles west of Georgetown, moving east at 25 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Georgetown, Seaford, Millsboro, Bridgeville, Sycamore and Blades. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3859 7571 3869 7572 3877 7565 3875 7527
      3858 7530
TIME...MOT...LOC 0019Z 269DEG 22KT 3869 7560 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Staarmann

194 
WWUS51 KPHI 130030
SVSPHI

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

DEC005-130040-
/O.CAN.KPHI.SV.W.0124.000000T0000Z-220713T0100Z/
Sussex DE-
830 PM EDT Tue Jul 12 2022

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL 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.  However small hail and
gusty winds are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
eastern Maryland.

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 3859 7571 3869 7572 3877 7565 3875 7527
      3858 7530
TIME...MOT...LOC 0028Z 271DEG 25KT 3869 7550 

$$

Staarmann

Nearby

Severe Thunderstorm Warnings in Maryland, 2022 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.