Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS State College, PA

September 15, 2021Warren County, Pennsylvania

NWS State College, PA issued this special weather statement at Sep 15, 2021, 11:48 AM EDT for Warren County, Pennsylvania. It was in force for 42 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: Sep 15, 2021, 11:48 AM EDT (15:48 UTC)
Expired: Sep 15, 2021, 12:30 PM EDT
In force: 42 min
Issued by: NWS State College, PA
Hail: 0.00 in
Wind: 55

County Warren County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 3.8 hours before the alert went out and 124 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: 236 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Sep 15, 10:56 AM EDT, 52 minutes earlier.

Area forecast discussion, Sep 15, 10:56 AM EDT, 52 minutes before

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Hazardous weather outlook, Sep 15, 4:17 AM EDT, 7 hours 31 minutes before

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In the hours before

Special weather statement, Sep 15, 11:48 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service State College PA
1148 AM EDT Wed Sep 15 2021

PAZ004-151630-
Warren PA-
1148 AM EDT Wed Sep 15 2021

...A strong thunderstorm will impact portions of northwestern Warren
County through 1230 PM EDT...

At 1147 AM EDT, Doppler radar was tracking a strong thunderstorm near
Corry, moving east at 40 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Warren, Columbus, Youngsville, Russell, Spring Creek, Lottsville,
Warren South, Garland, Chapman State Park, Sugar Grove, Starbrick,
Clarendon and Bear Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4200 7907 4176 7910 4178 7961 4199 7961
      4200 7960
TIME...MOT...LOC 1547Z 269DEG 36KT 4189 7970

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

Travis

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 15, 1:11 PM EDT	Special Weather Statement	CTP	Sullivan	49 min
Sep 15, 1:27 PM EDT	Special Weather Statement	CTP	Centre	33 min
Sep 15, 1:44 PM EDT	Severe Thunderstorm Warning	CTP	Centre	31 min
Sep 15, 1:48 PM EDT	Severe Thunderstorm Warning	CTP	Sullivan	42 min
Sep 15, 2:14 PM EDT	Areal Flood Advisory	CTP	Lycoming, Sullivan	2 hr
Sep 15, 2:14 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	31 min
Sep 15, 2:36 PM EDT	Flash Flood Warning	CTP	Lycoming, Sullivan	66 min
Sep 15, 2:45 PM EDT	Special Weather Statement	CTP	Union	30 min
Sep 15, 2:46 PM EDT	Special Weather Statement	CTP	Sullivan	44 min
Sep 15, 2:54 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Northumberland, Union	36 min
Sep 15, 3:13 PM EDT	Special Weather Statement	CTP	Union	17 min
Sep 15, 3:20 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin	40 min
Sep 15, 3:24 PM EDT	Severe Thunderstorm Warning	CTP	Montour, Northumberland, Union	36 min
Sep 15, 3:30 PM EDT	Special Weather Statement	CTP	Huntingdon	30 min
Sep 15, 3:55 PM EDT	Special Weather Statement	CTP	Snyder	35 min
Sep 15, 3:59 PM EDT	Special Weather Statement	CTP	Columbia, Montour	31 min
Sep 15, 4:03 PM EDT	Areal Flood Advisory	CTP	Lycoming, Sullivan	2 hr
Sep 15, 4:12 PM EDT	Flash Flood Warning	CTP	Columbia, Lycoming, Sullivan	3 hr
Sep 15, 4:18 PM EDT	Severe Thunderstorm Warning	CTP	Columbia	27 min
Sep 15, 4:27 PM EDT	Special Weather Statement	CTP	Perry	33 min
Sep 15, 4:36 PM EDT	Special Weather Statement	CTP	Columbia, Northumberland	24 min
Sep 15, 4:43 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Perry	32 min
Sep 15, 4:46 PM EDT	Areal Flood Advisory	CTP	Montour, Northumberland	89 min
Sep 15, 4:58 PM EDT	Special Weather Statement	CTP	Northumberland	32 min
Sep 15, 4:59 PM EDT	Special Weather Statement	CTP	Perry	31 min
Sep 15, 5:15 PM EDT	Special Weather Statement	CTP	Perry	30 min
Sep 15, 5:19 PM EDT	Special Weather Statement	CTP	Franklin	26 min
Sep 15, 5:32 PM EDT	Special Weather Statement	CTP	Dauphin	28 min
Sep 15, 5:37 PM EDT	Special Weather Statement	CTP	Schuylkill	23 min
Sep 15, 5:54 PM EDT	Special Weather Statement	CTP	Lebanon	36 min
Sep 15, 6:16 PM EDT	Special Weather Statement	CTP	York	29 min
Sep 15, 6:17 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon, Schuylkill	43 min
Sep 15, 6:24 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Franklin	27 min
Sep 15, 6:41 PM EDT	Special Weather Statement	CTP	Dauphin	34 min
Sep 15, 6:54 PM EDT	Special Weather Statement	CTP	Berks	21 min
Sep 15, 7:09 PM EDT	Areal Flood Advisory	CTP	Dauphin, York	96 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.