Alert archive / Pennsylvania / Tornado Warnings in 2019

Tornado Warning 27, NWS Philadelphia/Mount Holly

July 6, 2019Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this tornado warning at Jul 6, 2019, 5:36 PM EDT for Bucks County, Pennsylvania. It was in force for 24 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: Jul 6, 2019, 5:36 PM EDT (21:36 UTC)
Expired: Jul 6, 2019, 6:00 PM EDT
In force: 24 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Bucks County, PA

The radar

The Philadelphia radar (KDIX), 60 km from the middle of the area, began a volume at 21:39 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 nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.6 hours before the alert went out and 190 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: 1195 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 542 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

422 
WFUS51 KPHI 062136
TORPHI
PAC017-062200-
/O.NEW.KPHI.TO.W.0027.190706T2136Z-190706T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
536 PM EDT Sat Jul 6 2019

The National Weather Service in Mount Holly NJ has issued a

* Tornado Warning for...
  Central Bucks County in southeastern Pennsylvania...

* Until 600 PM EDT.
    
* At 535 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Doylestown, or 17 miles west of Trenton, moving
  east at 10 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...
  Doylestown, Newtown, Richboro, Newtown Grant, Village Shires and
  Churchville.

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.

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

&&

LAT...LON 4017 7495 4028 7514 4038 7508 4029 7487
      4029 7486
TIME...MOT...LOC 2135Z 288DEG 8KT 4031 7506 

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

$$

Fitzsimmons

1 follow-up statement

045 
WWUS51 KPHI 062154
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
554 PM EDT Sat Jul 6 2019

PAC017-062203-
/O.EXP.KPHI.TO.W.0027.000000T0000Z-190706T2200Z/
Bucks PA-
554 PM EDT Sat Jul 6 2019

...THE TORNADO WARNING FOR CENTRAL BUCKS COUNTY WILL EXPIRE AT 600 PM
EDT...
    
The tornado threat has diminished and the Tornado Warning will be 
allowed to expire. However, hail and damaging winds remain likely 
and a Severe Thunderstorm Warning remains in effect for the area.

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

Remember, a Severe Thunderstorm Warning still remains in effect for
Bucks County until 615 PM. 

LAT...LON 4017 7495 4028 7514 4038 7508 4029 7487
      4029 7486
TIME...MOT...LOC 2153Z 288DEG 8KT 4064 7502 

$$

Fitzsimmons

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 3:43 PM EDT	Severe Thunderstorm Warning	PHI	Northampton	47 min
Jul 6, 3:55 PM EDT	Tornado Warning	PHI	Delaware, Philadelphia	50 min
Jul 6, 4:28 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	21 min
Jul 6, 4:41 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	49 min
Jul 6, 4:45 PM EDT	Areal Flood Advisory	PHI	Bucks, Delaware, Montgomery, Philadelphia	4 hr
Jul 6, 4:54 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Montgomery	4 hr
Jul 6, 5:04 PM EDT	Severe Thunderstorm Warning	PHI	Delaware	17 min
Jul 6, 5:25 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	50 min
Jul 6, 5:44 PM EDT	Areal Flood Advisory	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	4 hr
Jul 6, 5:49 PM EDT	Areal Flood Advisory	PHI	Chester, Delaware, Montgomery	4 hr
Jul 6, 6:13 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Philadelphia	15 min
Jul 6, 6:22 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	38 min
Jul 6, 6:42 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Philadelphia	30 min
Jul 6, 6:49 PM EDT	Flash Flood Warning	PHI	Monroe, Northampton	3 hr
Jul 6, 6:53 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Monroe, Montgomery and 1 more	67 min
Jul 6, 7:45 PM EDT	Special Weather Statement	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	45 min

Nearby

Tornado Warnings in Pennsylvania, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.