Alert archive / Pennsylvania / Tornado Warnings in 2019

Tornado Warning 17, NWS Philadelphia/Mount Holly

May 29, 2019Bucks County, Lehigh County, Pennsylvania

NWS Philadelphia/Mount Holly issued this tornado warning at May 29, 2019, 3:17 PM EDT for Bucks County, Lehigh County, Pennsylvania. It was in force for 28 min. 4 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
May 29, 2019, 3:17 PM EDT (19:17 UTC)
Expired
May 29, 2019, 3:45 PM EDT
In force
28 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Tornado
Radar indicated
Hail
2.0 in

Counties Bucks County, PA, Lehigh County, PA

The radar

The Philadelphia radar (KDIX), 100 km from the middle of the area, began a volume at 19:19 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

TimeReportWhereRemark
May 29, 3:20 PM EDTHAIL 1Quakertown, PA
May 29, 3:26 PM EDTHAIL 25 Sw Pleasant Valley, PAHAIL FELL FOR APPROX 10 MINUTES. WIDESPREAD QUARTER TO HALF DOLLAR SIZED HAIL WITH 2 INCH HAIL INCLUDED.
May 29, 3:43 PM EDTHAIL 1Bedminster, PA
May 29, 3:55 PM EDTHAIL 1.5Quakertown, PA

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.

IssuedProductOfficeLasted
May 29, 1:10 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.3 hours before the alert went out and 217 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2019-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2019-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -157 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
415 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
-157 m²/s²
0-3 km storm-relative helicity
-76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

046 
WFUS51 KPHI 291917
TORPHI
PAC017-077-291945-
/O.NEW.KPHI.TO.W.0017.190529T1917Z-190529T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
317 PM EDT Wed May 29 2019

The National Weather Service in Mount Holly NJ has issued a

* Tornado Warning for...
  Southeastern Lehigh County in eastern Pennsylvania...
  Northwestern Bucks County in southeastern Pennsylvania...

* Until 345 PM EDT.
    
* At 317 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Zionsville, or 8 miles south of Allentown, moving
  east at 40 mph.

  HAZARD...Tornado and hail up to two inches in diameter.

  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...
  Quakertown, Perkasie, Doylestown, Bedminster, Dublin, Ottsville,
  Zionsville, Pipersville, Geryville, Sellersville, Coopersburg,
  Richlandtown and Trumbauersville.

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 4051 7552 4050 7510 4032 7514 4042 7549
      4045 7553
TIME...MOT...LOC 1917Z 281DEG 35KT 4046 7546 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

Iovino
1 follow-up statement
213 
WWUS51 KPHI 291930
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
330 PM EDT Wed May 29 2019

PAC077-291939-
/O.CAN.KPHI.TO.W.0017.000000T0000Z-190529T1945Z/
Lehigh PA-
330 PM EDT Wed May 29 2019

...THE TORNADO WARNING FOR SOUTHEASTERN LEHIGH COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved into 
upper Bucks County. Therefore, the warning has been cancelled for 
Lehigh County.

A tornado watch remains in effect until 800 PM EDT for eastern and
southeastern Pennsylvania.

LAT...LON 4048 7543 4050 7539 4050 7510 4032 7514
      4042 7544
TIME...MOT...LOC 1929Z 280DEG 33KT 4044 7533 

$$

PAC017-291945-
/O.CON.KPHI.TO.W.0017.000000T0000Z-190529T1945Z/
Bucks PA-
330 PM EDT Wed May 29 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM EDT FOR
NORTHWESTERN BUCKS COUNTY...
    
At 329 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Quakertown, or 13 miles southeast of Allentown,
moving east at 40 mph.

HAZARD...Tornado and two inch hail.

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...
Quakertown, Perkasie, Doylestown, Bedminster, Dublin, Pipersville,
Ottsville, Richlandtown and Trumbauersville.

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 4048 7543 4050 7539 4050 7510 4032 7514
      4042 7544
TIME...MOT...LOC 1929Z 280DEG 33KT 4044 7533 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

Iovino

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 8:23 PM EDTTornado WarningPHIMonroe37 min
May 28, 9:17 PM EDTRiver Flood WarningPHIChester101 min
May 29, 3:18 AM EDTFlash Flood WatchPHIBerks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more18 hr
May 29, 2:19 PM EDTSpecial Weather StatementPHILehigh41 min
May 29, 2:26 PM EDTSpecial Weather StatementPHIMontgomery34 min
May 29, 2:30 PM EDTSevere Thunderstorm WarningPHIBerks, Bucks, Lehigh, Montgomery, Northampton60 min
May 29, 2:48 PM EDTSpecial Weather StatementPHIMonroe27 min
May 29, 2:59 PM EDTSevere Thunderstorm WarningPHICarbon, Monroe46 min
May 29, 3:10 PM EDTSevere Thunderstorm WarningPHIBucks, Lehigh, Northampton65 min
May 29, 3:29 PM EDTSevere Thunderstorm WarningPHICarbon, Monroe, Northampton46 min
May 29, 3:29 PM EDTSevere Thunderstorm WarningPHICarbon, Lehigh, Monroe, Northampton46 min
May 29, 3:38 PM EDTTornado WarningPHIBucks37 min
May 29, 3:43 PM EDTFlash Flood WarningPHICarbon, Monroe4 hr
May 29, 3:43 PM EDTSevere Thunderstorm WarningPHIBerks, Lehigh62 min
May 29, 3:43 PM EDTSevere Thunderstorm WarningPHIMonroe, Northampton47 min
May 29, 4:04 PM EDTSevere Thunderstorm WarningPHIBucks41 min
May 29, 4:09 PM EDTSevere Thunderstorm WarningPHIMonroe, Northampton51 min
May 29, 4:13 PM EDTSevere Thunderstorm WarningPHIBucks, Lehigh, Northampton47 min
May 29, 4:16 PM EDTSevere Thunderstorm WarningPHICarbon, Lehigh, Monroe, Northampton27 min
May 29, 4:18 PM EDTSevere Thunderstorm WarningPHIBerks, Bucks, Chester, Lehigh, Montgomery, Northampton42 min
May 29, 4:27 PM EDTAreal Flood AdvisoryPHIBerks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more51 min
May 29, 4:35 PM EDTSpecial Weather StatementPHIBerks, Carbon, Lehigh, Monroe, Northampton25 min
May 29, 4:42 PM EDTSevere Thunderstorm WarningPHICarbon, Lehigh, Monroe, Northampton48 min
May 29, 4:50 PM EDTSevere Thunderstorm WarningPHIBerks, Carbon, Chester, Lehigh, Montgomery, Northampton40 min
May 29, 4:53 PM EDTSevere Thunderstorm WarningPHIBucks, Montgomery67 min
May 29, 4:55 PM EDTFlash Flood WarningPHIBerks, Bucks, Chester, Lehigh, Montgomery4 hr
May 29, 5:08 PM EDTTornado WarningPHIBucks, Montgomery27 min
May 29, 5:14 PM EDTFlash Flood WarningPHIBerks, Bucks, Carbon, Lehigh, Monroe, Northampton3 hr
May 29, 5:23 PM EDTSevere Thunderstorm WarningPHIBerks, Bucks, Chester, Lehigh, Monroe, Montgomery and 1 more34 min
May 29, 5:27 PM EDTFlash Flood WarningPHIBucks, Chester, Montgomery, Philadelphia4 hr
May 29, 5:33 PM EDTTornado WarningPHIBucks27 min
May 29, 5:39 PM EDTSevere Thunderstorm WarningPHIBucks66 min
May 29, 5:49 PM EDTSevere Thunderstorm WarningPHIBerks, Chester, Delaware, Montgomery, Philadelphia41 min
May 29, 6:06 PM EDTFlash Flood WarningPHIBucks4 hr
May 29, 6:06 PM EDTSevere Thunderstorm WarningPHIBucks, Montgomery, Philadelphia24 min
May 29, 6:22 PM EDTSevere Thunderstorm WarningPHIChester, Delaware, Montgomery, Philadelphia53 min
May 29, 6:35 PM EDTFlash Flood WarningPHIBerks, Chester, Delaware, Montgomery, Philadelphia3 hr
May 29, 7:12 PM EDTAreal Flood AdvisoryPHIChester3 hr

Nearby

Tornado Warnings in Pennsylvania, 2019Every tornado warning in 2019Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.