Alert archive / Pennsylvania / Special Weather Statements in 2019

Special Weather Statement, NWS State College, PA

August 6, 2019Adams County, Pennsylvania

NWS State College, PA issued this special weather statement at Aug 6, 2019, 1:45 PM EDT for Adams County, Pennsylvania. It was in force for 30 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 6, 2019, 1:45 PM EDT (17:45 UTC)
Expired
Aug 6, 2019, 2:15 PM EDT
In force
30 min
Issued by
NWS State College, PA

County Adams County, PA

The radar

The Sterling radar (KLWX), 103 km from the middle of the area, began a volume at 17:46 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

Wallops Is Stn, VA (KWAL), launched 12:00Z, 5.8 hours before the alert went out and 259 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, Wallops Is Stn, VA at 12:00Z on 2019-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 849 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 12:00Z on 2019-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 square meters per square second.193958Sfc1 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
849 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
626 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
-38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Aug 6, 12:06 PM EDT, 1 hour 39 minutes earlier.

Area forecast discussion, Aug 6, 12:06 PM EDT, 1 hour 39 minutes before
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Hazardous weather outlook, Aug 6, 8:59 AM EDT, 4 hours 46 minutes before
Hazardous Weather Outlook
National Weather Service State College PA
859 AM EDT Tue Aug 6 2019

PAZ004-005-010-011-017-024-025-033>035-071300-
Warren-McKean-Elk-Cameron-Clearfield-Cambria-Blair-Somerset-Bedford-
Fulton-
859 AM EDT Tue Aug 6 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Strong to severe thunderstorms with heavy rain, gusty winds and
small hail are possible late today.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Strong to severe thunderstorms with heavy rain, gusty winds and
small hail are possible on Thursday afternoon and evening.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ006-012-018-019-026>028-036-037-041-042-045-046-049>053-056>059-
063>066-071300-
Potter-Northern Clinton-Northern Centre-Southern Centre-Huntingdon-
Mifflin-Juniata-Franklin-Tioga-Northern Lycoming-Sullivan-
Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-
Adams-York-Lancaster-
859 AM EDT Tue Aug 6 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Strong to severe thunderstorms with heavy rain, gusty winds and hail
are possible on Wednesday. The rain may be heavy enough to make
localized flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Aug 6, 1:02 PM EDT, 43 minutes before
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Special weather statement, Aug 6, 1:45 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 1:02 PM EDTSpecial Weather StatementCTPMontour28 min
Aug 6, 1:24 PM EDTAreal Flood AdvisoryCTPNorthumberland, Union111 min
Aug 6, 1:47 PM EDTSpecial Weather StatementCTPCentre28 min
Aug 6, 3:57 PM EDTSpecial Weather StatementCTPLebanon33 min
Aug 6, 5:50 PM EDTSpecial Weather StatementCTPColumbia, Montour40 min
Aug 6, 6:26 PM EDTSpecial Weather StatementCTPColumbia34 min
Aug 6, 6:46 PM EDTSpecial Weather StatementCTPLycoming44 min

Nearby

Special Weather Statements in Pennsylvania, 2019Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.