Alert archive / Pennsylvania / Tornado Warnings in 2010
Tornado Warning 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this tornado warning at May 14, 2010, 5:38 PM EDT for Berks County, Lehigh County, Pennsylvania. It was in force for 37 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
- May 14, 2010, 5:38 PM EDT (21:38 UTC)
- Expired
- May 14, 2010, 6:15 PM EDT
- In force
- 37 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Berks County, PA, Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 119 km from the middle of the area, began a volume at 21:38 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 |
|---|---|---|---|
| May 14, 5:46 PM EDT | HAIL 1.75 | Allentown, PA | GOLF BALL SIZE HAIL IN WEST ALLENTOWN. |
| May 14, 5:50 PM EDT | HAIL 1 | Allentown, PA | QUARTER SIZE HAIL IN ALLENTOWN |
| May 14, 5:50 PM EDT | HAIL 1.75 | 8 W Allentown, PA | GOLF BALL SIZE HAIL IN FOGELSVILLE. |
| May 14, 5:50 PM EDT | HAIL 2.5 | 3 Se Claussville, PA | DAMAGE TO VEHICLES, SOME WINDOWS DAMAGED. |
| May 14, 5:55 PM EDT | TSTM WND GST 60 | Allentown, PA | A FEW TREES DOWN |
| May 14, 5:55 PM EDT | HAIL 1.75 | Allentown, PA | HAIL AS LARGE AS GOLF BALLS IN THE ALLENTOWN AREA, ALSO A FEW TREES DOWN IN LEHIGH COUNTY. |
| May 14, 5:57 PM EDT | FUNNEL CLOUD | Emmaus, PA | A COUPLE OF FUNNEL CLOUD SIGHTINGS IN LEHIGH COUNTY |
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 |
|---|---|---|---|
| May 14, 3:43 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.6 hours before the alert went out and 129 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.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 557 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
779
WFUS51 KPHI 142138
TORPHI
PAC011-077-142215-
/O.NEW.KPHI.TO.W.0001.100514T2138Z-100514T2215Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
538 PM EDT FRI MAY 14 2010
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* TORNADO WARNING FOR...
NORTHEASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
SOUTHERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
THIS INCLUDES THE CITY OF ALLENTOWN...
* UNTIL 615 PM EDT
* AT 534 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
CLAUSSVILLE...OR 14 MILES WEST OF ALLENTOWN...MOVING SOUTHEAST AT
35 MPH.
* THE TORNADO WILL BE NEAR...
ANCIENT OAKS BY 550 PM EDT...
ALLENTOWN BY 555 PM EDT...
EMMAUS...ZIONSVILLE AND ALLENTOWN BY 600 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA.
&&
LAT...LON 4067 7574 4057 7539 4054 7535 4045 7546
4043 7549 4056 7581
TIME...MOT...LOC 2138Z 294DEG 29KT 4058 7572
$$
HAYES2 follow-up statements
234
WWUS51 KPHI 142154
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
554 PM EDT FRI MAY 14 2010
PAC011-077-142215-
/O.CON.KPHI.TO.W.0001.000000T0000Z-100514T2215Z/
BERKS PA-LEHIGH PA-
554 PM EDT FRI MAY 14 2010
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR SOUTHERN
LEHIGH AND NORTHEASTERN BERKS COUNTIES...
AT 552 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR ANCIENT OAKS...OR
7 MILES SOUTHWEST OF ALLENTOWN...MOVING SOUTHEAST AT 35 MPH.
THE TORNADO WILL BE NEAR...
ZIONSVILLE AND EMMAUS BY 600 PM EDT...
COOPERSBURG BY 610 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA.
&&
LAT...LON 4067 7574 4057 7539 4054 7535 4045 7546
4043 7549 4056 7581
TIME...MOT...LOC 2154Z 294DEG 29KT 4053 7557
$$
HAYES925
WWUS51 KPHI 142212
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
612 PM EDT FRI MAY 14 2010
PAC011-077-142222-
/O.EXP.KPHI.TO.W.0001.000000T0000Z-100514T2215Z/
BERKS PA-LEHIGH PA-
612 PM EDT FRI MAY 14 2010
...THE TORNADO WARNING FOR SOUTHERN LEHIGH AND NORTHEASTERN BERKS
COUNTIES WILL EXPIRE AT 615 PM EDT...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA.
LAT...LON 4067 7574 4057 7539 4054 7535 4045 7546
4043 7549 4056 7581
TIME...MOT...LOC 2212Z 294DEG 29KT 4047 7540
$$
HAYESThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 3:52 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 53 min |
| May 14, 4:18 PM EDT | Special Weather Statement | PHI | Carbon | 57 min |
| May 14, 4:26 PM EDT | Special Weather Statement | PHI | Carbon, Northampton | 64 min |
| May 14, 4:42 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 63 min |
| May 14, 5:04 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Northampton | 56 min |
| May 14, 5:07 PM EDT | Special Weather Statement | PHI | Northampton | 53 min |
| May 14, 5:49 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 56 min |
| May 14, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Northampton | 67 min |
| May 14, 6:11 PM EDT | Special Weather Statement | PHI | Carbon | 64 min |
| May 14, 6:25 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Montgomery, Philadelphia | 65 min |
| May 14, 6:35 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 55 min |
Nearby
Tornado Warnings in Pennsylvania, 2010Every tornado warning in 2010Tornadoes in 2010
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.