Alert archive / Pennsylvania / Special Weather Statements in 2009

Special Weather Statement, NWS State College, PA

August 2, 2009Lancaster County, Pennsylvania

NWS State College, PA issued this special weather statement at Aug 2, 2009, 5:08 AM EDT for Lancaster County, Pennsylvania. It was in force for 52 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: Aug 2, 2009, 5:08 AM EDT (09:08 UTC)
Expired: Aug 2, 2009, 6:00 AM EDT
In force: 52 min
Issued by: NWS State College, PA

County Lancaster County, PA

The radar

The Dover AFB radar (KDOX), 146 km from the middle of the area, began a volume at 09:10 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 00:00Z, 9.1 hours before the alert went out and 160 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: 1533 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1001 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Aug 2, 4:57 AM EDT, 11 minutes earlier.

Area forecast discussion, Aug 2, 4:57 AM EDT, 11 minutes before

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Hazardous weather outlook, Aug 1, 9:27 AM EDT, 19 hours 41 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
927 AM EDT SAT AUG 1 2009

PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-021330-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
JUNIATA-SOMERSET-BEDFORD-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING-
SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND-
ADAMS-YORK-LANCASTER-
927 AM EDT SAT AUG 1 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 1, 11:33 PM EDT, 5 hours 35 minutes before

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Special weather statement, Aug 2, 2:14 AM EDT, 2 hours 54 minutes before

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Special weather statement, Aug 2, 3:35 AM EDT, 1 hour 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
335 AM EDT SUN AUG 2 2009

PAZ042-046-051>053-020830-
COLUMBIA PA-MONTOUR PA-NORTHUMBERLAND PA-SOUTHERN LYCOMING PA-
SULLIVAN PA-
335 AM EDT SUN AUG 2 2009

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL NORTHUMBERLAND...EASTERN
MONTOUR...NORTHERN COLUMBIA...SOUTHEASTERN LYCOMING AND SOUTHEASTERN
SULLIVAN COUNTIES...

AT 334 AM EDT...A STRONG THUNDERSTORM WAS LOCATED 8 MILES NORTHWEST
OF BLOOMSBURG...MOVING NORTHEAST AT 35 MPH.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THIS STORM.

THIS STORM WILL BE NEAR ALMEDIA AROUND 340 AM...ORANGEVILLE AROUND
345 AM...BENTON AROUND 350 AM...CENTRAL AROUND 400 AM AND RICKETTS
GLEN STATE PARK AROUND 405 AM.

THIS WILL IMPACT I-80 BETWEEN MILE MARKERS 221 AND 240.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11...STATE
ROAD 118.

LAT...LON 4086 7672 4123 7666 4139 7628 4138 7628
      4132 7631 4120 7632 4114 7628 4114 7623
      4109 7623

EXPERIMENTAL

FORECASTER: MARTIN

Special weather statement, Aug 2, 4:14 AM EDT, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
414 AM EDT SUN AUG 2 2009

PAZ065-066-020915-
LANCASTER PA-YORK PA-
414 AM EDT SUN AUG 2 2009

...A STRONG THUNDERSTORM WILL AFFECT LANCASTER AND SOUTHERN YORK
COUNTIES...

AT 413 AM EDT...A STRONG THUNDERSTORM WAS LOCATED 8 MILES SOUTHEAST
OF PARKVILLE...MOVING NORTHEAST AT 30 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.

THIS STORM WILL BE NEAR CODORUS AROUND 420 AM...NEW FREEDOM...SEVEN
VALLEYS...AND GLEN ROCK AROUND 425 AM...SHREWSBURY...AND LOGANVILLE
AROUND 430 AM...JACOBUS...AND STEWARTSTOWN AROUND 435 AM...
WINTERSTOWN AND DALLASTOWN AROUND 440 AM.

THIS WILL IMPACT I-83 BETWEEN MILE MARKERS 1 AND 17.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...STATE HIGHWAY
283...ROUTE 30...ROUTE 222...STATE ROAD 94...STATE ROAD 501.

LAT...LON 3977 7699 4018 7629 3986 7601 3973 7611
      3971 7630 3971 7695

EXPERIMENTAL

FORECASTER: MARTIN

Special weather statement, Aug 2, 5:08 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
508 AM EDT SUN AUG 2 2009

PAZ065-066-021000-
LANCASTER PA-YORK PA-
508 AM EDT SUN AUG 2 2009

...A STRONG THUNDERSTORM WILL AFFECT LANCASTER AND SOUTHEASTERN YORK
COUNTIES...

AT 505 AM EDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES EAST OF
WILLOW STREET...MOVING NORTHEAST AT 35 MPH. OTHER STORMS WERE
DEVELOPING OVER NORTHERN MARYLAND..AND WILL CONTINUE TO MOVE
ACROSS SOUTHEAST YORK AND LANCASTER COUNTIES.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.

THIS STORM WILL BE NEAR PARADISE AROUND 510 AM...LEOLA AROUND 515
AM...NEW HOLLAND AROUND 520 AM...REAMSTOWN AROUND 525 AM...TERRE HILL
AROUND 530 AM AND CHURCHTOWN AROUND 535 AM.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 276 AND 295...I-83 BETWEEN
MILE MARKERS 1 AND 13.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...STATE HIGHWAY
283...ROUTE 30...ROUTE 222...ROUTE 322...STATE ROAD 41...STATE ROAD
501.

LAT...LON 4031 7617 4032 7614 4015 7589 4011 7593
      4005 7594 3992 7600 3987 7599 3973 7611
      3971 7630 3972 7694

EXPERIMENTAL

FORECASTER: MARTIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 11:33 PM EDT	Special Weather Statement	CTP	Adams	27 min
Aug 2, 12:36 AM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 3 more	3 hr
Aug 2, 2:14 AM EDT	Special Weather Statement	CTP	Lebanon, Schuylkill	61 min
Aug 2, 2:29 AM EDT	Areal Flood Advisory	CTP	Columbia, Lycoming, Montour, Northumberland, Schuylkill, Snyder and 1 more	3 hr
Aug 2, 3:35 AM EDT	Special Weather Statement	CTP	Columbia, Montour	55 min
Aug 2, 4:14 AM EDT	Special Weather Statement	CTP	Lancaster, York	61 min
Aug 2, 5:08 AM EDT	Flash Flood Watch	CTP	Adams, Bedford, Columbia, Cumberland, Dauphin, Franklin and 15 more	10 hr
Aug 2, 5:27 AM EDT	Areal Flood Advisory	CTP	Adams, Lancaster, York	3 hr
Aug 2, 7:08 AM EDT	Special Weather Statement	CTP	Adams	52 min
Aug 2, 7:30 AM EDT	Severe Thunderstorm Warning	CTP	Adams, York	60 min
Aug 2, 8:18 AM EDT	Special Weather Statement	CTP	Lancaster	27 min
Aug 2, 8:19 AM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, Perry and 2 more	3 hr
Aug 2, 8:29 AM EDT	Severe Thunderstorm Warning	CTP	Adams, Dauphin, Lancaster, Lebanon, York	61 min
Aug 2, 9:36 AM EDT	Flash Flood Warning	CTP	Lancaster, Lebanon, York	3 hr
Aug 2, 9:53 AM EDT	Special Weather Statement	CTP	Lancaster	37 min
Aug 2, 6:38 PM EDT	Special Weather Statement	CTP	Franklin	52 min
Aug 2, 7:22 PM EDT	Special Weather Statement	CTP	Cumberland, Franklin	68 min
Aug 2, 7:49 PM EDT	Flash Flood Warning	CTP	Cumberland	107 min

Nearby

Special Weather Statements in Pennsylvania, 2009 Every special weather statement in 2009

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.