Alert archive / Pennsylvania / Special Weather Statements in 2019

Special Weather Statement, NWS State College, PA

June 29, 2019Bedford County, Pennsylvania

NWS State College, PA issued this special weather statement at Jun 29, 2019, 1:21 PM EDT for Bedford County, Pennsylvania. It was in force for 39 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 29, 2019, 1:21 PM EDT (17:21 UTC)
Expired
Jun 29, 2019, 2:00 PM EDT
In force
39 min
Issued by
NWS State College, PA

County Bedford County, PA

The radar

The State College radar (KCCX), 99 km from the middle of the area, began a volume at 17:22 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

Pittsburgh, PA (KPIT), launched 12:00Z, 5.4 hours before the alert went out and 132 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, Pittsburgh, PA at 12:00Z on 2019-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 262 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, Pittsburgh, PA at 12:00Z on 2019-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 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
262 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
1526 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
-17 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 Jun 29, 10:48 AM EDT, 2 hours 33 minutes earlier.

Area forecast discussion, Jun 29, 10:48 AM EDT, 2 hours 33 minutes before
Area Forecast Discussion
National Weather Service State College PA
1048 AM EDT Sat Jun 29 2019

.SYNOPSIS...
A cold front will settle south through the forecast area today.
Scattered strong thunderstorms will accompany the passage of
the cold front this afternoon into this evening. A brief period
of cooler temperatures and comfortable humidity will follow
Sunday into Monday before another fast moving cold front moves
our way.

&&

.NEAR TERM /UNTIL 7 PM THIS EVENING/...
Stray TSRA over the SW fizzled, but may flare up as they move
into the SCent mtns/Lower Susq where it is heating up nicely and
CAPE already near 1500. Still a little cap with few cu out there
yet. But, the forcing diving into the NW is helping TSRA to
continue into the NW mtns, although the appear to be weakening
very slightly at this moment. Still getting here at the right
time to tap into CAPE since it appears to be overcoming whatever
capping is currently in place where it is currently moving
thru. Holding the line with all severe wording and timing all
similar, with most action 2-8PM, but some storms could linger
in the srn tier thru 10-11PM. Already 83F in the SE and it is
only 10AM. Maxes still on track.

Prev...
Pooling PW extending along an elongated 5h shear axis and sfc
cold front pushing southeastward towards NW PA this morning.
The west-east oriented cold front will sag southward through
the lower Lakes this morning and across central PA later today
through this evening. Air mass becomes moderately unstable over
much of central and eastern PA, and SPC has slightly expanded
SLGT risk to cover more of my southwest and central counties
while MRGL covers the rest. Deep layer shear will be weak and
mean layer winds will be westerly, tending to downslope and dry.
Some mid level warming to be overcome late morning through early
afternoon, but with CAPEs forecast between 1500-2000J, we should
be able to generate some decent cold pools and locally strong
storms. Wind gusts the main severe threat.

Highs will range from around 80 over the north, to the lower 90s
over the Lower Susq. Right now the Heat Indices are forecast in
the mid 90s, but if the dewpoints end up underestimated, we
will see Heat Advisory criteria for a few hours over the SE.

&&

.SHORT TERM /7 PM THIS EVENING THROUGH 6 PM SUNDAY/...
Showers and storms should fade over the southern tier of CWA
tonight as the frontal boundary pushes south of the Mason Dixon
line by Sunday morning. Mins tonight range from upper 50s north
to near 70 south. Much more comfortable/drier air mass arrives
for Sunday with maxes some 4-6F cooler as well.

&&

.LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/...
Dry and cooler conds expected Sunday night associated with area
of below normal PW. Heat and humidity quickly return early next
week and build through the 4th of July. Expect above average
temperatures next week with increasingly humid conditions.
Forecast max heat index values should peak in the mid-upper 90s
around Independence Day.

Low confidence in the precip pattern which will be dominated by
episodic convection tied to individual shortwaves - which offer
very limited predictability at this range.

&&

.AVIATION /14Z SATURDAY THROUGH WEDNESDAY/...
Showers and thunderstorms VCTY KJST have dissipated but that
area could flare up again as it gets closer to KMDT/KLNS early
this aftn. A cluster of storms is almost to KBFD, and have timed
these out initially, but also left mention (VCTS) in for most
of the aftn there. Front drops through right around or slightly
after peak heating and numerous TSRA expected through all aftn.
The srn terminals could see them last thru 01-02Z. After the
rain, possible IFR cigs and vsbys form overnight, especially at
IPT and JST. But some drying time for BFD before sunset may
preclude fog there except for a brief time.

Just the tiniest chc of a SHRA on Sunday in the heating of the
aftn, mainly NE of KIPT and near KJST. Otherwise, expect VFR.

.Outlook...

Mon...No Sig Wx.

Tue-Wed...Scattered PM thunderstorms possible.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
None.

&&

SYNOPSIS...DeVoir
NEAR TERM...Dangelo/DeVoir
SHORT TERM...DeVoir
LONG TERM...Steinbugl
AVIATION...Dangelo/Ceru
Hazardous weather outlook, Jun 29, 12:12 PM EDT, 1 hour 9 minutes before
Hazardous Weather Outlook
National Weather Service State College PA
1212 PM EDT Sat Jun 29 2019

PAZ006-011-012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-301615-
Potter-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-
1212 PM EDT Sat Jun 29 2019

...SEVERE THUNDERSTORM WATCH 461 IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ004-005-010-301615-
Warren-McKean-Elk-
1212 PM EDT Sat Jun 29 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

The probability for widespread hazardous weather is low.

.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, Jun 29, 12:33 PM EDT, 48 minutes before
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Local storm report, Jun 29, 12:56 PM EDT, 25 minutes before
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Local storm report, Jun 29, 12:58 PM EDT, 23 minutes before
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Local storm report, Jun 29, 1:02 PM EDT, 19 minutes before
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Special weather statement, Jun 29, 1:21 PM EDT, 0 minutes before
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Special weather statement, Jun 29, 1:21 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
Jun 29, 10:40 AM EDTSpecial Weather StatementCTPClearfield50 min
Jun 29, 11:11 AM EDTSpecial Weather StatementCTPPotter49 min
Jun 29, 11:30 AM EDTSpecial Weather StatementCTPClearfield45 min
Jun 29, 11:38 AM EDTSevere Thunderstorm WarningCTPCentre, Clearfield37 min
Jun 29, 12:03 PM EDTSpecial Weather StatementCTPCambria42 min
Jun 29, 12:12 PM EDTSpecial Weather StatementCTPCentre48 min
Jun 29, 12:20 PM EDTSevere Thunderstorm WarningCTPCentre40 min
Jun 29, 12:28 PM EDTSevere Thunderstorm WarningCTPClinton, Lycoming42 min
Jun 29, 12:33 PM EDTSpecial Weather StatementCTPMifflin42 min
Jun 29, 12:45 PM EDTSevere Thunderstorm WarningCTPJuniata, Mifflin, Snyder, Union45 min
Jun 29, 12:59 PM EDTSevere Thunderstorm WarningCTPCumberland, Franklin, Huntingdon, Juniata, Perry61 min
Jun 29, 1:10 PM EDTSevere Thunderstorm WarningCTPJuniata, Perry65 min
Jun 29, 1:43 PM EDTSpecial Weather StatementCTPColumbia62 min
Jun 29, 1:45 PM EDTSpecial Weather StatementCTPDauphin15 min
Jun 29, 1:47 PM EDTSpecial Weather StatementCTPClinton28 min
Jun 29, 2:01 PM EDTSevere Thunderstorm WarningCTPColumbia, Dauphin, Montour, Northumberland, Schuylkill44 min
Jun 29, 2:06 PM EDTSpecial Weather StatementCTPAdams, Franklin39 min
Jun 29, 2:16 PM EDTSpecial Weather StatementCTPDauphin, Lebanon59 min
Jun 29, 2:19 PM EDTSevere Thunderstorm WarningCTPAdams, Cumberland, York41 min
Jun 29, 2:26 PM EDTSevere Thunderstorm WarningCTPFranklin, Fulton64 min
Jun 29, 2:45 PM EDTSevere Thunderstorm WarningCTPDauphin, Lancaster, Lebanon60 min
Jun 29, 3:03 PM EDTSpecial Weather StatementCTPAdams, York57 min
Jun 29, 3:09 PM EDTSpecial Weather StatementCTPPotter66 min
Jun 29, 3:15 PM EDTSevere Thunderstorm WarningCTPLancaster, York60 min
Jun 29, 3:49 PM EDTSevere Thunderstorm WarningCTPBedford, Fulton36 min
Jun 29, 4:05 PM EDTSevere Thunderstorm WarningCTPLycoming, Tioga55 min
Jun 29, 4:59 PM EDTSevere Thunderstorm WarningCTPClinton, Lycoming, Montour, Northumberland, Union61 min
Jun 29, 5:01 PM EDTSevere Thunderstorm WarningCTPClearfield59 min
Jun 29, 5:53 PM EDTSpecial Weather StatementCTPMontour, Northumberland, Union37 min
Jun 29, 5:57 PM EDTSpecial Weather StatementCTPClinton33 min
Jun 29, 6:04 PM EDTSevere Thunderstorm WarningCTPColumbia, Montour, Northumberland, Snyder, Union56 min
Jun 29, 6:16 PM EDTAreal Flood AdvisoryCTPClinton3 hr
Jun 29, 6:26 PM EDTSpecial Weather StatementCTPCameron34 min
Jun 29, 6:27 PM EDTSpecial Weather StatementCTPSnyder33 min
Jun 29, 6:45 PM EDTSevere Thunderstorm WarningCTPDauphin, Lebanon, Northumberland, Schuylkill, Snyder60 min
Jun 29, 7:07 PM EDTSpecial Weather StatementCTPSomerset23 min
Jun 29, 7:11 PM EDTAreal Flood AdvisoryCTPColumbia, Montour, Northumberland, Snyder, Union2 hr
Jun 29, 7:15 PM EDTSpecial Weather StatementCTPLebanon30 min
Jun 29, 7:41 PM EDTSpecial Weather StatementCTPLancaster19 min
Jun 29, 7:45 PM EDTSpecial Weather StatementCTPBedford30 min
Jun 29, 7:53 PM EDTSevere Thunderstorm WarningCTPLancaster26 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.