Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS State College, PA

August 11, 2021McKean County, Pennsylvania

NWS State College, PA issued this special weather statement at Aug 11, 2021, 6:40 AM EDT for McKean County, Pennsylvania. It was in force for 50 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 11, 2021, 6:40 AM EDT (10:40 UTC)
Expired: Aug 11, 2021, 7:30 AM EDT
In force: 50 min
Issued by: NWS State College, PA
Hail: 0.25 in
Wind: 50

County McKean County, PA

The radar

The Buffalo radar (KBUF), 111 km from the middle of the area, began a volume at 10:44 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 10.7 hours before the alert went out and 109 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: 1071 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 910 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

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 11, 6:22 AM EDT, 18 minutes earlier.

Area forecast discussion, Aug 11, 6:22 AM EDT, 18 minutes before

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Hazardous weather outlook, Aug 11, 3:46 AM EDT, 2 hours 54 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
346 AM EDT Wed Aug 11 2021

PAZ012-018-019-025>027-035-037-041-042-045-120800-
Northern Clinton-Northern Centre-Southern Centre-Blair-Huntingdon-
Mifflin-Fulton-Tioga-Northern Lycoming-Sullivan-Southern Clinton-
346 AM EDT Wed Aug 11 2021

...HEAT ADVISORY IN EFFECT FROM NOON TO 7 PM EDT THURSDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

A few strong to marginally severe storms with locally strong to
damaging wind gusts will be possible this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

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

   Heat Advisory.

A few strong to marginally severe storms with locally strong to
damaging wind gusts will be possible Thursday and Friday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ028-036-046-049>053-056>059-063>066-120800-
Juniata-Franklin-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-
Adams-York-Lancaster-
346 AM EDT Wed Aug 11 2021

...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 7 PM EDT THIS
EVENING...
...EXCESSIVE HEAT WARNING IN EFFECT FROM NOON TO 7 PM EDT THURSDAY...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

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

   Heat Advisory.

A few strong to marginally severe storms with locally strong to
damaging wind gusts will be possible this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

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

   Excessive Heat Warning.

A few strong to marginally severe storms with locally strong to
damaging wind gusts will be possible Thursday and Friday afternoon.

Excessive heat conditions are likely to continue on Friday with
triple-digit max heat indices forecast.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ004>006-010-011-017-024-033-034-120800-
Warren-McKean-Potter-Elk-Cameron-Clearfield-Cambria-Somerset-Bedford-
346 AM EDT Wed Aug 11 2021

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

A few strong to marginally severe storms with locally strong to
damaging wind gusts will be possible this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

A few strong to marginally severe storms with locally strong to
damaging wind gusts will be possible Thursday and Friday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

MRS

In the hours before

Special weather statement, Aug 11, 5:03 AM EDT, 1 hour 37 minutes before

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Special weather statement, Aug 11, 6:40 AM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 12:18 AM EDT	Special Weather Statement	CTP	Union	27 min
Aug 11, 3:38 AM EDT	Excessive Heat Warning	CTP	Adams, Columbia, Cumberland, Dauphin, Franklin, Juniata and 10 more	39 hr
Aug 11, 5:03 AM EDT	Special Weather Statement	CTP	Warren	27 min
Aug 11, 2:11 PM EDT	Special Weather Statement	CTP	Cambria	49 min
Aug 11, 2:32 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	58 min
Aug 11, 2:59 PM EDT	Special Weather Statement	CTP	Somerset	61 min
Aug 11, 3:02 PM EDT	Special Weather Statement	CTP	Blair	28 min
Aug 11, 3:13 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Huntingdon	46 min
Aug 11, 3:28 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Mifflin	62 min
Aug 11, 3:34 PM EDT	Severe Thunderstorm Warning	CTP	Mifflin	41 min
Aug 11, 3:35 PM EDT	Special Weather Statement	CTP	Huntingdon	25 min
Aug 11, 3:49 PM EDT	Special Weather Statement	CTP	Juniata	26 min
Aug 11, 3:55 PM EDT	Special Weather Statement	CTP	Dauphin	35 min
Aug 11, 4:07 PM EDT	Special Weather Statement	CTP	York	38 min
Aug 11, 4:08 PM EDT	Special Weather Statement	CTP	Franklin	37 min
Aug 11, 4:13 PM EDT	Special Weather Statement	CTP	Juniata, Perry, Snyder, Union	32 min
Aug 11, 4:23 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Snyder, Union	59 min
Aug 11, 4:37 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin	53 min
Aug 11, 4:42 PM EDT	Special Weather Statement	CTP	York	33 min
Aug 11, 4:43 PM EDT	Special Weather Statement	CTP	Cumberland	32 min
Aug 11, 4:47 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Juniata, Northumberland, Perry, Snyder	53 min
Aug 11, 4:52 PM EDT	Areal Flood Advisory	CTP	Dauphin	2 hr
Aug 11, 4:54 PM EDT	Special Weather Statement	CTP	Lebanon	36 min
Aug 11, 5:00 PM EDT	Flash Flood Warning Considerable damage threat	CTP	Cumberland, Dauphin, York	85 min
Aug 11, 5:00 PM EDT	Special Weather Statement	CTP	York	30 min
Aug 11, 5:08 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland	52 min
Aug 11, 5:14 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	46 min
Aug 11, 5:35 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Northumberland	48 min
Aug 11, 5:44 PM EDT	Areal Flood Advisory	CTP	Lancaster, Lebanon	2 hr
Aug 11, 5:47 PM EDT	Special Weather Statement	CTP	Lancaster, York	58 min
Aug 11, 5:54 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	51 min
Aug 11, 5:58 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	47 min
Aug 11, 6:25 PM EDT	Areal Flood Advisory	CTP	Cumberland, Dauphin, York	95 min
Aug 11, 7:14 PM EDT	Special Weather Statement	CTP	Warren	31 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.