Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS State College, PA

April 1, 2021Clearfield County, Pennsylvania

NWS State College, PA issued this special weather statement at Apr 1, 2021, 7:56 PM EDT for Clearfield County, Pennsylvania. It was in force for 64 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: Apr 1, 2021, 7:56 PM EDT (23:56 UTC)
Expired: Apr 1, 2021, 9:00 PM EDT
In force: 64 min
Issued by: NWS State College, PA

County Clearfield County, PA

The radar

The State College radar (KCCX), 59 km from the middle of the area, began a volume at 23:59 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, 11.9 hours before the alert went out and 144 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 865 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: -48 m²/s²
0-3 km storm-relative helicity: -24 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 Apr 1, 7:52 PM EDT, 4 minutes earlier.

Area forecast discussion, Apr 1, 7:52 PM EDT, 4 minutes before

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<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Hazardous weather outlook, Apr 1, 8:10 AM EDT, 11 hours 46 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
810 AM EDT Thu Apr 1 2021

PAZ019-025>028-034>036-045-046-049>053-056>059-063>066-021215-
Southern Centre-Blair-Huntingdon-Mifflin-Juniata-Bedford-Fulton-
Franklin-Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-
Adams-York-Lancaster-
810 AM EDT Thu Apr 1 2021

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...Friday through Wednesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ004>006-010>012-017-018-024-033-037-041-042-021215-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Cambria-Somerset-Tioga-Northern Lycoming-Sullivan-
810 AM EDT Thu Apr 1 2021

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Scattered locally heavy snow showers and a brief squall are possible
late Thursday morning through Thursday evening and could produce a
quick coating of snow and slippery roads along with a sharp drop in
visibility.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Apr 1, 4:04 PM EDT, 3 hours 52 minutes before

Special Weather Statement
National Weather Service State College PA
404 PM EDT Thu Apr 1 2021

PAZ004>006-010-011-037-012300-
McKean PA-Warren PA-Potter PA-Cameron PA-Tioga PA-Elk PA-
404 PM EDT Thu Apr 1 2021

...SNOW SQUALLS POSSIBLE INTO THIS EVENING...

Snow squalls with gusty winds and low visibilities are possible late
this afternoon and early this evening. These squalls could reduce
the visibility and potentially create flash freezes.

Be prepared for rapidly changing conditions.

SNOW SQUALL SAFETY INFO...

Warm road temperatures may initially melt snow, but cold air
temperature and snow continuing to fall could lead to icy roads.
This is known as a flash freeze. This can lead to widespread
accidents.

Conditions can deteriorate rapidly in snow squalls. Be prepared for
snow or ice covered roads. Slow down and allow extra time to reach
your destination.

Sometimes the best way to keep yourself safe to get exit the highway
or road and allow the squall to pass by.

&&

LAT...LON 4200 7693 4160 7687 4155 7696 4154 7760
      4148 7760 4148 7797 4137 7799 4122 7810
      4125 7864 4120 7871 4126 7874 4137 7897
      4134 7909 4145 7906 4144 7896 4162 7896
      4163 7961 4199 7961
TIME...MOT...LOC 2002Z 335DEG 11KT 4241 7816 4213 7966

Dangelo

Special weather statement, Apr 1, 4:25 PM EDT, 3 hours 31 minutes before

Special Weather Statement
National Weather Service State College PA
425 PM EDT Thu Apr 1 2021

PAZ024-033-034-012115-
Bedford PA-Somerset PA-Cambria PA-
425 PM EDT Thu Apr 1 2021

...A SNOW SQUALL WILL AFFECT PARTS OF BEDFORD...SOMERSET...AND
CAMBRIA COUNTIES...

HAZARDS...A snow squall accompanied by winds of up to 30 MPH.

LOCATION AND MOVEMENT...At 423 PM EDT, snow squalls were moving to
the south and east at about 25 MPH through northern Somerset County.

This includes the following Interstates...
 Interstate 70 from mile markers 147 to 150.
 The Pennsylvania Turnpike from mile markers 100 to 163.
 Interstate 99 from mile markers 0 to 13.

This also includes the following highways...
 Route 30 from the Westmoreland county line to Breezewood.
 Route 219 from Berlin to Geistown.
 Route 220 from just south of Bedford to near King on I-99.

SAFETY INFO...
A rapid drop in temperature may lead to the rapid formation of black
ice on area roadways. Black ice is nearly impossible to see and
roadways may appear wet. Please use extreme caution, especially on
bridges, overpasses and around curves. Allow plenty of stopping
distance and avoid braking suddenly.

Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time to reach your destination.

&&

LAT...LON 3998 7934 4012 7921 4011 7919 4012 7917
      4016 7916 4038 7897 4016 7814 4012 7816
      4009 7820 4006 7819 3985 7829
TIME...MOT...LOC 2023Z 283DEG 24KT 4020 7895

Dangelo

Special weather statement, Apr 1, 7:15 PM EDT, 41 minutes before

Special Weather Statement
National Weather Service State College PA
715 PM EDT Thu Apr 1 2021

PAZ037-041-020015-
Northern Lycoming PA-Tioga PA-
715 PM EDT Thu Apr 1 2021

...A SNOW SQUALL WILL AFFECT PARTS OF NORTHERN LYCOMING AND TIOGA
COUNTIES...

HAZARDS...A snow squall accompanied by wind gusts of 20 to 25 MPH
which can rapidly reduce visibility to a quarter of a mile or less.

LOCATION AND MOVEMENT...

At 713 PM EDT, a snow squall was over Covington, or near Mansfield
moving south at 20 MPH.

LOCATIONS IMPACTED INCLUDE...

Mansfield, Blossburg, Covington, Arnot, Ralston, Ogdensburg, Trout
Run, Barbours, Buttonwood, Liberty and Mansfield University.

This includes the following highways...
 Route 6 from west of Mansfield to the Bradford county line.
 Route 15 from south of Trout Run to Mansfield.
 State Road 14 from Trout Run to the Bradford County line.

SAFETY INFO...

Warm road temperatures may initially melt snow, but cold air
temperature and snow continuing to fall could lead to icy roads.
This is known as a flash freeze. This can lead to widespread
accidents. Please use extreme caution, especially on bridges,
overpasses and around curves. Allow plenty of stopping distance and
avoid braking suddenly.

Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time to reach your destination.

&&

LAT...LON 4160 7688 4159 7681 4139 7674 4135 7696
      4135 7702 4133 7706 4130 7721 4178 7720
      4185 7690
TIME...MOT...LOC 2313Z 340DEG 19KT 4175 7707

Dangelo

Special weather statement, Apr 1, 7:56 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service State College PA
756 PM EDT Thu Apr 1 2021

PAZ017-020100-
Clearfield PA-
756 PM EDT Thu Apr 1 2021

...A SNOW SQUALL WILL AFFECT PARTS OF CLEARFIELD COUNTY...

HAZARDS... A snow squall accompanied by winds of up to 30 MPH which
can rapidly reduce visibility to less than a quarter of a mile.

LOCATION AND MOVEMENT... At 754 PM EDT, a snow squall was over
DuBois moving southeast at 25 MPH.

LOCATIONS IMPACTED INCLUDE...
DuBois, Clearfield, Sandy, Woodland, Curwensville, Rockton, Lecontes
Mills, S.B. Elliot State Park, Falls Creek, Grampian, Treasure Lake,
Clearfield-Lawrence Airport and Penn State Dubois.

For those driving on Interstate 80, this includes areas between the
Dubois and Kylertown exits, specifically from mile markers 97 to 126.

SAFETY INFO...

Warm road temperatures may initially melt snow, but cold air
temperature and snow continuing to fall could lead to icy roads.
This is known as a flash freeze. This can lead to widespread
accidents.. Please use extreme caution, especially on bridges,
overpasses and around curves. Allow plenty of stopping distance and
avoid braking suddenly.

Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time to reach your destination.

&&

LAT...LON 4118 7878 4120 7875 4120 7870 4121 7866
      4109 7824 4086 7838 4094 7870 4103 7881
      4114 7880
TIME...MOT...LOC 2354Z 313DEG 23KT 4111 7873

Dangelo

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 1, 4:04 PM EDT	Special Weather Statement	CTP	Cameron, Elk, McKean, Potter, Tioga, Warren	3 hr
Apr 1, 4:25 PM EDT	Special Weather Statement	CTP	Bedford, Somerset	50 min
Apr 1, 7:15 PM EDT	Special Weather Statement	CTP	Lycoming	60 min

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.