Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS State College, PA

June 3, 2021Adams County, York County, Pennsylvania

NWS State College, PA issued this special weather statement at Jun 3, 2021, 2:52 PM EDT for Adams County, York County, Pennsylvania. It was in force for 23 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 3, 2021, 2:52 PM EDT (18:52 UTC)
Expired: Jun 3, 2021, 3:15 PM EDT
In force: 23 min
Issued by: NWS State College, PA

Counties Adams County, PA, York County, PA

The radar

The Sterling radar (KLWX), 123 km from the middle of the area, began a volume at 18:54 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, 6.9 hours before the alert went out and 123 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: 73 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 511 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS State College, PA wrote its last area forecast discussion before this special weather statement went out at Jun 3, 1:13 PM EDT, 1 hour 39 minutes earlier.

Area forecast discussion, Jun 3, 1:13 PM EDT, 1 hour 39 minutes before

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Hazardous weather outlook, Jun 3, 5:24 AM EDT, 9 hours 28 minutes before

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In the hours before

Special weather statement, Jun 3, 2:52 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service State College PA
252 PM EDT Thu Jun 3 2021

PAZ064>066-031915-
Lancaster PA-York PA-Adams PA-
252 PM EDT Thu Jun 3 2021

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF LANCASTER...YORK...AND
ADAMS COUNTIES UNTIL 315 PM EDT...

At 251 PM EDT, Doppler radar indicated a strong thunderstorm over
Gettysburg, moving northeast at 35 mph.

Wind gusts up to 50 mph are possible.

Locations impacted include...
York, Hanover, Weigelstown, Elizabethtown, Gettysburg, Parkville, Red
Lion, Spry, Dallastown, Hampton, Shiloh, East York,
Stonybrook-Wilshire, West York, Maytown, Codorus, Grantley, Tyler
Run-Queens Gate, McSherrystown and Valley View.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3975 7730 4001 7732 4003 7719 4005 7717
      4013 7674 4012 7672 4014 7671 4016 7658
      3986 7649
TIME...MOT...LOC 1851Z 255DEG 28KT 3986 7723

Martin

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 4:05 PM EDT	Special Weather Statement	CTP	York	25 min
Jun 3, 4:09 PM EDT	Special Weather Statement	CTP	Lancaster	36 min
Jun 3, 4:28 PM EDT	Special Weather Statement	CTP	Lancaster	17 min
Jun 3, 4:52 PM EDT	Areal Flood Advisory	CTP	Lancaster	2 hr

Nearby

Special Weather Statements in Pennsylvania, 2021 Every 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.