Alert archive / Pennsylvania / Wind Advisories in 2018

Wind Advisory 4, NWS State College, PA

October 20, 20184 counties in Pennsylvania

NWS State College, PA issued this wind advisory at Oct 20, 2018, 2:09 PM EDT for 4 counties in Pennsylvania. It took effect at Oct 20, 2018, 9:00 PM EDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
Oct 20, 2018, 2:09 PM EDT (18:09 UTC)
In effect from
Oct 20, 2018, 9:00 PM EDT
Expired
Oct 21, 2018, 8:00 AM EDT
In force
11 hr
Issued by
NWS State College, PA

Counties Bedford County, PA, Franklin County, PA, Fulton County, PA, Somerset County, PA

The radar

The State College radar (KCCX), 111 km from the middle of the area, began a volume at 18:11 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, 6.2 hours before the alert went out and 138 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 2018-10-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2018-10-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1013 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

154 
WWUS71 KCTP 201809
NPWCTP

URGENT - WEATHER MESSAGE
National Weather Service State College PA
209 PM EDT Sat Oct 20 2018

PAZ033>036-211200-
/O.NEW.KCTP.WI.Y.0004.181021T0100Z-181021T1200Z/
Somerset-Bedford-Fulton-Franklin-
Including the cities of Somerset, Bedford, McConnellsburg, 
and Chambersburg
209 PM EDT Sat Oct 20 2018

...WIND ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 8 AM EDT
SUNDAY...

The National Weather Service in State College has issued a Wind
Advisory, which is in effect from 9 PM this evening to 8 AM EDT
Sunday.

* WINDS...Northwest 15 to 25 mph with gusts up to 45 mph.

* TIMING...Period of strongest winds is expected from late tonight
  through sunrise Sunday morning.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 45 to 55 mph are expected.
Winds this strong can make driving difficult, especially for high
profile vehicles. Review wind safety and preparedness information
at weather.gov/wind.

&&

$$

DeVoir
1 follow-up statement
488 
WWUS71 KCTP 210820
NPWCTP

URGENT - WEATHER MESSAGE
National Weather Service State College PA
420 AM EDT Sun Oct 21 2018


PAZ065-066-211900-
/O.NEW.KCTP.FR.Y.0003.181022T0500Z-181022T1300Z/
York-Lancaster-
Including the cities of York and Lancaster
420 AM EDT Sun Oct 21 2018

...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM EDT MONDAY...

The National Weather Service in State College has issued a Frost
Advisory, which is in effect from 1 AM to 9 AM EDT Monday.

* TEMPERATURES...In the low to mid 30s.

* TIMING...Late tonight through the mid morning hours Monday.

* IMPACTS...Frost and freeze conditions may damage sensitive 
  vegetation. Take steps now to protect tender plants from the 
  cold.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Those with agricultural or gardening interests should protect
sensitive vegetation. Potted plants should be brought indoors.

&&

$$

PAZ033>036-211200-
/O.CON.KCTP.WI.Y.0004.000000T0000Z-181021T1200Z/
Somerset-Bedford-Fulton-Franklin-
Including the cities of Somerset, Bedford, McConnellsburg, 
and Chambersburg
420 AM EDT Sun Oct 21 2018

...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...

* WINDS...Northwest 15 to 25 mph with occasional gusts around 45
  mph.

* TIMING...The period of strongest winds will occur across the
  higher terrain and to the southeast of gaps in the ridges
  through shortly after sunrise today, then slowly subside late 
  this morning and this afternoon.
  

* IMPACTS...Strong wind gusts may lead to scattered downed tree
  limbs and power lines. Scattered power outages are expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that wind gusts of around 45 mph are 
expected. Winds this strong can make driving difficult, especially
for high profile vehicles. Review wind safety and preparedness 
information at weather.gov/wind.

&&

$$

Lambert

Nearby

Wind Advisories in Pennsylvania, 2018Every wind advisory in 2018

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.