Alert archive / Delaware / Tornado Warnings in 2023

Tornado Warning 3, NWS Philadelphia/Mount Holly

April 1, 2023Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this tornado warning at Apr 1, 2023, 6:22 PM EDT for Sussex County, Delaware. It was in force for 23 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: Apr 1, 2023, 6:22 PM EDT (22:22 UTC)
Expired: Apr 1, 2023, 6:45 PM EDT
In force: 23 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Observed
Hail: 1.0 in

County Sussex County, DE

The radar

The Dover AFB radar (KDOX), 10 km from the middle of the area, began a volume at 22:24 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
Apr 1, 5:30 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.4 hours before the alert went out and 103 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: 706 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 434 m²/s²
0-3 km storm-relative helicity: 376 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

990 
WFUS51 KPHI 012222
TORPHI
DEC005-012245-
/O.NEW.KPHI.TO.W.0003.230401T2222Z-230401T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
622 PM EDT Sat Apr 1 2023

The National Weather Service in Mount Holly NJ has issued a

* Tornado Warning for...
  Northeastern Sussex County in southern Delaware...

* Until 645 PM EDT.
    
* At 621 PM EDT, a tornado producing storm was located near
  Ellendale, or 9 miles north of Georgetown, moving east at 35 mph.

  HAZARD...Damaging tornado and quarter size hail.

  SOURCE...Radar confirmed tornado.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Milford, Milton and Ellendale. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado has been confirmed. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3875 7540 3887 7546 3895 7532 3897 7527
      3884 7510
TIME...MOT...LOC 2221Z 250DEG 32KT 3882 7537 

TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN

$$

MLB

2 follow-up statements

685 
WWUS51 KPHI 012229
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
629 PM EDT Sat Apr 1 2023

DEC005-012245-
/O.CON.KPHI.TO.W.0003.000000T0000Z-230401T2245Z/
Sussex DE-
629 PM EDT Sat Apr 1 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM EDT FOR
NORTHEASTERN SUSSEX COUNTY...
        
At 628 PM EDT, a confirmed tornado was located near Milton, or 12
miles northeast of Georgetown, moving east at 35 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Radar confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
northeastern Sussex County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado has been confirmed. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3878 7530 3886 7537 3893 7531 3896 7525
      3891 7519 3884 7510
TIME...MOT...LOC 2228Z 250DEG 32KT 3884 7528 

TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN

$$

MLB

113 
WWUS51 KPHI 012236
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
636 PM EDT Sat Apr 1 2023

DEC005-012246-
/O.EXP.KPHI.TO.W.0003.000000T0000Z-230401T2245Z/
Sussex DE-
636 PM EDT Sat Apr 1 2023

...THE TORNADO WARNING FOR NORTHEASTERN SUSSEX COUNTY WILL EXPIRE AT
645 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 1000 PM EDT for southern
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 3878 7530 3886 7537 3893 7531 3896 7525
      3891 7519 3884 7510
TIME...MOT...LOC 2236Z 250DEG 32KT 3886 7520 

$$

MLB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 1, 5:38 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	37 min
Apr 1, 6:01 PM EDT	Tornado Warning	PHI	Kent, Sussex	29 min
Apr 1, 6:33 PM EDT	Tornado Warning	PHI	New Castle	27 min
Apr 1, 6:39 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Kent, New Castle	51 min
Apr 1, 6:58 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	47 min
Apr 1, 7:20 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Kent	40 min
Apr 1, 7:36 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Kent, Sussex	39 min
Apr 1, 7:50 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	40 min

Nearby

Tornado Warnings in Delaware, 2023 Every tornado warning in 2023 Tornadoes 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.