Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS State College, PA

June 8, 2021Lancaster County, Pennsylvania

NWS State College, PA issued this special weather statement at Jun 8, 2021, 5:02 PM EDT for Lancaster County, Pennsylvania. It was in force for 28 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
Jun 8, 2021, 5:02 PM EDT (21:02 UTC)
Expired
Jun 8, 2021, 5:30 PM EDT
In force
28 min
Issued by
NWS State College, PA

County Lancaster County, PA

The radar

The Sterling radar (KLWX), 151 km from the middle of the area, began a volume at 21:04 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.0 hours before the alert went out and 149 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, Washington/Dulle, VA at 12:00Z on 2021-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 254 joules per kilogram.LCLLFCEL10008507005003002001001 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, Washington/Dulle, VA at 12:00Z on 2021-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -39 square meters per square second.1939Sfc1 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
254 J/kg
Mixed-layer CIN
-121 J/kg
Mixed-layer LCL
1088 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-39 m²/s²
0-3 km storm-relative helicity
23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

578 
WWUS81 KCTP 082102
SPSCTP

Special Weather Statement
National Weather Service State College PA
502 PM EDT Tue Jun 8 2021
 
PAZ066-082130-
Lancaster PA-
502 PM EDT Tue Jun 8 2021

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF LANCASTER COUNTY UNTIL
530 PM EDT...

At 501 PM EDT, Doppler radar indicated a strong thunderstorm over
Manheim, moving south at 15 mph.

Pea size hail and wind gusts up to 50 mph are possible.

Locations impacted include...
Lancaster, Columbia, Lititz, Millersville, Willow Street, Mount Joy,
Manheim, East Petersburg, Akron, Leola, Paradise,
Salunga-Landisville, Rothsville, Mountville, Brickerville, Leacock,
Lampeter, Penryn, Washington Boro and Gordonville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3999 7650 4002 7652 4019 7652 4025 7625
      4000 7612 3996 7649
TIME...MOT...LOC 2101Z 352DEG 10KT 4016 7642 

$$

Martin

The office that day

Everything else NWS State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 8, 9:09 AM EDTSpecial Weather StatementCTPSullivan51 min
Jun 8, 1:02 PM EDTSpecial Weather StatementCTPDauphin58 min
Jun 8, 4:12 PM EDTSpecial Weather StatementCTPChester33 min
Jun 8, 4:46 PM EDTSpecial Weather StatementCTPLancaster29 min
Jun 8, 5:25 PM EDTSpecial Weather StatementCTPLancaster50 min
Jun 8, 6:09 PM EDTSpecial Weather StatementCTPLancaster66 min

Nearby

Special Weather Statements in Pennsylvania, 2021Every special weather statement in 2021

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.