Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 164, NWS State College, PA

July 16, 2021Lycoming County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 16, 2021, 4:47 PM EDT for Lycoming County, Pennsylvania. It was in force for 43 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: Jul 16, 2021, 4:47 PM EDT (20:47 UTC)
Expired: Jul 16, 2021, 5:30 PM EDT
In force: 43 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

County Lycoming County, PA

The radar

The Binghamton radar (KBGM), 106 km from the middle of the area, began a volume at 20:48 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 12:00Z, 8.8 hours before the alert went out and 214 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: 1011 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

298 
WUUS51 KCTP 162047
SVRCTP
PAC081-162130-
/O.NEW.KCTP.SV.W.0164.210716T2047Z-210716T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
447 PM EDT Fri Jul 16 2021

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  North central Lycoming County in north central Pennsylvania...

* Until 530 PM EDT.

* At 447 PM EDT, a severe thunderstorm was located over Ralston,
  moving southeast at 25 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Ralston and Buttonwood. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4159 7684 4159 7681 4146 7677 4142 7676
      4148 7715 4154 7720 4155 7696 4157 7694
      4160 7685
TIME...MOT...LOC 2047Z 315DEG 22KT 4154 7697 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Colbert

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 9:40 PM EDT	Special Weather Statement	CTP	Warren	50 min
Jul 16, 1:22 PM EDT	Flood Watch	CTP	Cameron, Clinton, Elk, Lycoming, McKean, Potter and 3 more	21 min
Jul 16, 1:46 PM EDT	Flash Flood Watch	CTP	Adams, Cameron, Clinton, Columbia, Dauphin, Elk and 12 more	32 hr
Jul 16, 1:59 PM EDT	Special Weather Statement	CTP	Montour	31 min
Jul 16, 2:05 PM EDT	Areal Flood Advisory	CTP	Lycoming, Sullivan	2 hr
Jul 16, 2:18 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	42 min
Jul 16, 2:29 PM EDT	Special Weather Statement	CTP	Montour	31 min
Jul 16, 2:52 PM EDT	Special Weather Statement	CTP	Potter	23 min
Jul 16, 2:59 PM EDT	Areal Flood Advisory	CTP	Columbia, Montour, Northumberland	2 hr
Jul 16, 2:59 PM EDT	Special Weather Statement	CTP	Columbia	31 min
Jul 16, 3:14 PM EDT	Special Weather Statement	CTP	Potter	31 min
Jul 16, 3:19 PM EDT	Special Weather Statement	CTP	Montour	26 min
Jul 16, 3:22 PM EDT	Special Weather Statement	CTP	Juniata, Perry	38 min
Jul 16, 3:54 PM EDT	Special Weather Statement	CTP	Clearfield	36 min
Jul 16, 4:07 PM EDT	Special Weather Statement	CTP	Clearfield	38 min
Jul 16, 4:11 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	49 min
Jul 16, 4:18 PM EDT	Special Weather Statement	CTP	Tioga	42 min
Jul 16, 4:20 PM EDT	Flash Flood Warning	CTP	Columbia, Montour, Northumberland, Union	85 min
Jul 16, 4:29 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	46 min
Jul 16, 4:30 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	45 min
Jul 16, 4:57 PM EDT	Special Weather Statement	CTP	Clinton	33 min
Jul 16, 4:59 PM EDT	Areal Flood Advisory	CTP	Lycoming, Tioga	2 hr
Jul 16, 5:10 PM EDT	Areal Flood Advisory	CTP	Sullivan	3 hr
Jul 16, 5:13 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming	32 min
Jul 16, 5:25 PM EDT	Special Weather Statement	CTP	Carbon	20 min
Jul 16, 5:31 PM EDT	Flash Flood Warning	CTP	Sullivan	108 min
Jul 16, 5:32 PM EDT	Special Weather Statement	CTP	Clinton	28 min
Jul 16, 5:44 PM EDT	Special Weather Statement	CTP	Centre	31 min
Jul 16, 6:01 PM EDT	Special Weather Statement	CTP	Centre	29 min
Jul 16, 6:02 PM EDT	Severe Thunderstorm Warning	CTP	Sullivan	45 min
Jul 16, 6:31 PM EDT	Special Weather Statement	CTP	Union	29 min
Jul 16, 6:52 PM EDT	Special Weather Statement	CTP	Columbia	23 min
Jul 16, 6:57 PM EDT	Special Weather Statement	CTP	Union	33 min
Jul 16, 7:15 PM EDT	Areal Flood Advisory	CTP	Columbia, Lycoming, Montour, Northumberland, Snyder, Union	2 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2021 Every severe thunderstorm warning 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.