Alert archive / Pennsylvania / Tornado Warnings in 2023

Tornado Warning 20, NWS Philadelphia/Mount Holly

July 2, 2023Chester County, Pennsylvania

NWS Philadelphia/Mount Holly issued this tornado warning at Jul 2, 2023, 7:25 PM EDT for Chester County, Pennsylvania. It was in force for 35 min. 7 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 2, 2023, 7:25 PM EDT (23:25 UTC)
Expired: Jul 2, 2023, 8:00 PM EDT
In force: 35 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Chester County, PA

The radar

The Dover AFB radar (KDOX), 117 km from the middle of the area, began a volume at 23:28 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 2, 7:29 PM EDT	FUNNEL CLOUD	1 Nne Lincoln Universit, PA	Spotter reports rotating wall cloud with funnel cloud at this location.
Jul 2, 7:29 PM EDT	FUNNEL CLOUD	1 Nne Lincoln Universit, PA	Spotter reports rotating wall cloud with funnel cloud at this location.
Jul 2, 7:29 PM EDT	FUNNEL CLOUD	1 Nne Lincoln Universit, PA	Spotter reports rotating wall cloud with funnel cloud at this location.
Jul 2, 7:49 PM EDT	FUNNEL CLOUD	New London Twp., PA	Public sent in photo via social media of a probable tornado on the ground near New London.
Jul 2, 8:01 PM EDT	TSTM WND DMG	Landenberg, PA	Report of small funnels around Landenberg with tree limbs down, but no major tree damage.
Jul 2, 8:01 PM EDT	TSTM WND DMG	Landenberg, PA	Report of small funnels around Landenberg with tree limbs down, but no major tree damage.
Jul 2, 8:01 PM EDT	TSTM WND DMG	Landenberg, PA	Report of small funnels around Landenberg with tree limbs down, but no major tree damage.

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 2, 4:31 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 11.4 hours before the alert went out and 162 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: 137 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 1034 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

990 
WFUS51 KPHI 022325
TORPHI
PAC029-030000-
/O.NEW.KPHI.TO.W.0020.230702T2325Z-230703T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
725 PM EDT Sun Jul 2 2023

The National Weather Service in Mount Holly NJ has issued a

* Tornado Warning for...
  Southwestern Chester County in southeastern Pennsylvania...

* Until 800 PM EDT.
    
* At 724 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Oxford, or 14 miles northwest of Newark, moving
  east at 20 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  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...
  Kennett Square, Oxford, West Grove, Kemblesville, Landenberg, North
  Star, Avondale and Toughkenamon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3986 7598 3985 7569 3972 7577 3979 7601
TIME...MOT...LOC 2324Z 282DEG 16KT 3982 7595 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Fitzsimmons

2 follow-up statements

438 
WWUS51 KPHI 022340
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
740 PM EDT Sun Jul 2 2023

PAC029-030000-
/O.CON.KPHI.TO.W.0020.000000T0000Z-230703T0000Z/
Chester PA-
740 PM EDT Sun Jul 2 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR SOUTH
CENTRAL CHESTER COUNTY...
    
At 740 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Kemblesville, or 9 miles northwest of Newark, moving
southeast at 15 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

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...
Kennett Square, West Grove, Kemblesville, Landenberg, North Star,
Avondale and Toughkenamon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3977 7593 3985 7589 3985 7575 3984 7570
      3972 7577
TIME...MOT...LOC 2340Z 296DEG 15KT 3978 7587 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Hoeflich

249 
WWUS51 KPHI 022358
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
758 PM EDT Sun Jul 2 2023

PAC029-030008-
/O.EXP.KPHI.TO.W.0020.000000T0000Z-230703T0000Z/
Chester PA-
758 PM EDT Sun Jul 2 2023

...THE TORNADO WARNING FOR SOUTH CENTRAL CHESTER COUNTY WILL EXPIRE
AT 800 PM EDT...
    
The Tornado Warning that was previously in effect has been reissued 
for southeastern Chester County. Please refer to that bulletin for 
the latest severe weather information.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
northern Delaware...and southeastern Pennsylvania.

LAT...LON 3977 7593 3985 7589 3985 7575 3984 7570
      3972 7577
TIME...MOT...LOC 2358Z 282DEG 16KT 3976 7577 

$$

Hoeflich

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 5:08 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	52 min
Jul 2, 6:16 PM EDT	Tornado Warning	PHI	Berks, Lehigh	29 min
Jul 2, 6:33 PM EDT	Tornado Warning	PHI	Berks, Chester, Montgomery	27 min
Jul 2, 6:57 PM EDT	Tornado Warning	PHI	Berks, Chester, Montgomery	9 min
Jul 2, 7:06 PM EDT	Tornado Warning	PHI	Chester	24 min
Jul 2, 7:23 PM EDT	Areal Flood Advisory	PHI	Berks	2 hr
Jul 2, 7:57 PM EDT	Tornado Warning Tornado observed	PHI	Chester	33 min

Nearby

Tornado Warnings in Pennsylvania, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.