Weather Center: Pennsylvania

Current alerts

4 freeze warnings touch Pennsylvania. 4 freeze warnings (touching Pennsylvania)

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NWS alerts checked 05:31Z · Data: NOAA/NWS

Sources & update times

SPC Day 1 outlook issued 05:14Z · Data: NOAA/SPC

SPC Day 2 outlook issued 16 Oct 17:24Z · Data: NOAA/SPC

SPC Day 3 outlook issued 16 Oct 19:22Z · Data: NOAA/SPC

SPC discussions checked 05:31Z · Data: NOAA/SPC

SPC storm reports checked 05:30Z · Data: NOAA/SPC

WPC Day 1 outlook issued 00:56Z · Data: NOAA/WPC

WPC Day 2 outlook issued 16 Oct 19:17Z · Data: NOAA/WPC

WPC Day 3 outlook issued 16 Oct 19:17Z · Data: NOAA/WPC

Each feed is judged on its own clock. The masthead’s reading is the site’s publishing health, which is a different thing: a publishing delay does not make a freshly read warning stale, and a fresh check does not make an old outlook newly issued.

NWS warnings / SPC selected outlook: feeds current

NWS warnings: Feed current; checked 05:31Z.

SPC selected outlook: Feed current; checked 05:30Z.

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Hazard & forecast product

This period does not carry the any severe view, so the overall risk is shown.

SPC’s Day 2 file (issued 16 Oct 17:24Z) also covers this period; the newer issuance is shown.

SPC Day 1 categorical outlook, Saturday 17 Oct

Source: SPC

Now, not forecast: Current warnings as of 05:31Z are drawn over the outlook for Saturday 17 Oct, the warnings hatched so the forecast shows through. They are in force now; the outlook is for its own period. Show the forecast alone

Forecast: SPC’s scale

General Thunderstorms not severe

View scale

General Thunderstorms not severe
1 · Marginal Risk (not outlined)
2 · Slight Risk (not outlined)
3 · Enhanced Risk (not outlined)
4 · Moderate Risk (not outlined)
5 · High Risk (not outlined)

In force now

Freeze Warning 4

SPC Day 1 categorical outlook, valid 12:00Z to 18 Oct 12:00Z, issued 05:14Z · Data: NOAA/SPC. Warnings and watches are as of 05:31Z (now), not for the outlook’s period.

Everything on the map, as a list

SPC Day 1 categorical outlook: General Thunderstorms
Freeze Warning: Lackawanna; Luzerne, until 18 Oct 13:00Z
Freeze Warning: Lucas; Wood; Ottawa; Sandusky; Erie; Lorain; Cuyahoga; Geauga; Ashtabula Inland; Hancock; Seneca; Huron; Medina; Summit; Portage; Trumbull; Wyandot; Crawford; Richland; Ashland; Wayne; Stark; Mahoning; Marion; Morrow; Holmes; Knox; Southern Erie; Crawford, until 18 Oct 13:00Z
Freeze Warning: Warren; Potter; Elk; Cameron; Northern Clinton; Clearfield; Northern Centre; Southern Centre; Cambria; Blair; Huntingdon; Mifflin; Juniata; Somerset; Bedford; Fulton; Franklin; Tioga; Northern Lycoming; Sullivan; Southern Clinton; Southern Lycoming; Union; Snyder; Montour; Northumberland; Columbia; Perry; Dauphin; Schuylkill; Lebanon; Cumberland; Adams; York; Lancaster, until 18 Oct 13:00Z
Freeze Warning: Tuscarawas; Carroll; Columbiana; Coshocton; Harrison; Jefferson; Muskingum; Guernsey; Belmont; Noble; Monroe; Mercer; Venango; Forest; Lawrence; Butler; Clarion; Jefferson; Beaver; Allegheny; Armstrong; Washington; Greene; Westmoreland; Westmoreland Ridges; Fayette; Fayette Ridges; Indiana; Higher Elevations of Indiana; Hancock; Brooke; Ohio; Marshall; Wetzel; Marion; Monongalia; Ridges of Eastern Monongalia and Northwestern Preston; Preston; Eastern Preston; Western Tucker; Eastern Tucker, until 18 Oct 13:00Z
Outside Pennsylvania, for context: Freeze Warning: Washington; Frederick; Carroll; Northern Baltimore; Extreme Western Allegany; Central and Eastern Allegany; Northwest Harford; Western Garrett; Eastern Garrett; Augusta; Rockingham; Shenandoah; Frederick; Page; Warren; Clarke; Western Highland; Eastern Highland; Western Loudoun; Northern Virginia Blue Ridge; Central Virginia Blue Ridge; Hampshire; Morgan; Berkeley; Jefferson; Hardy; Western Grant; Eastern Grant; Western Mineral; Eastern Mineral; Western Pendleton; Eastern Pendleton, until 18 Oct 12:00Z
Outside Pennsylvania, for context: Freeze Warning: Niagara; Orleans; Monroe; Wayne; Northern Cayuga; Northern Erie; Genesee, until 18 Oct 13:00Z
Outside Pennsylvania, for context: Freeze Warning: Greenup; Carter; Boyd; Lawrence; Perry; Morgan; Athens; Washington; Jackson; Vinton; Meigs; Gallia; Lawrence; Dickenson; Buchanan; Wayne; Cabell; Mason; Jackson; Wood; Pleasants; Tyler; Lincoln; Putnam; Kanawha; Roane; Wirt; Calhoun; Ritchie; Doddridge; Mingo; Logan; Boone; Clay; Braxton; Gilmer; Lewis; Harrison; Taylor; McDowell; Wyoming; Upshur; Barbour; Northwest Raleigh; Southeast Raleigh; Northwest Fayette; Southeast Fayette; Northwest Nicholas; Southeast Nicholas; Northwest Webster; Southeast Webster; Northwest Pocahontas; Southeast Pocahontas; Northwest Randolph; Southeast Randolph, until 18 Oct 13:00Z

Briefing details · Where, When, Main hazards

Saturday briefing for Pennsylvania

Highest anywhere in Pennsylvania: no risk area

This is the outlook, a forecast. Warnings in force here are listed above it and outrank it.

The highest category anywhere in the state, from its outline; not every point in it.

When: Outlook valid 12:00Z to 18 Oct 12:00Z: the period it covers, not when storms arrive. This period has not begun.
Prepare: No additional severe-weather preparation is indicated by this outlook.

Official discussion

SPC’s discussion covers the whole country, not Pennsylvania alone.

SPC Day 1 Convective Outlook narrative, issued 05:16Z · Data: NOAA/SPC

000
ACUS01 KWNS 170516
SWODY1
SPC AC 170514

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1214 AM CDT Sat Oct 17 2026

Valid 171200Z - 181200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected today.

...Synopsis...
In the wake of a cold frontal passage, much of the CONUS will be too
dry and stable for thunderstorm development today. The front will
continue moving southward along the central/southern FL Peninsula,
where scattered storm development will be possible within a very
moist environment. Poor lapse rates and weak deep-layer shear should
limit organized severe potential, though localized strong gusts may
occur. Across the Southwest, sporadic lightning flashes may
accompany weak convection associated with a slow-moving mid/upper
low centered offshore of Baja California.

..Dean/Chalmers.. 10/17/2026

$$

SPC’s outlook page

Forecast details

SPC’s categorical outlook rates the coverage and intensity of organized severe storms on five levels, from Marginal (1) to High (5); “Thunderstorms” outlines a 10% or greater chance of thunderstorms and is not a severe category. Each probability is the chance of that hazard within 25 miles of a point during the valid period. An intensity overlay marks where significant severe hazards are more likely should storms occur. An outlook is a forecast; a warning means a storm is happening or imminent. SPC’s definitions.

Coming days · Pennsylvania

2026-10-17Severe storms: No severe area outlinedFlash flooding: No excessive-rainfall area outlined 2026-10-18Severe storms: No severe area outlinedFlash flooding: No excessive-rainfall area outlined

These are daily outlooks, not arrival times. Days 4–8 retain SPC’s predictability and potential-too-low wording in the dated outlook controls.

Flash-flood risk

WPC outlines no excessive rainfall area at this scope. WPC’s Excessive Rainfall Outlook: a separate forecast with its own scale.

View flash-flood risk

Recent reports

Reporting period: 12Z 16 Oct – 12Z 17 Oct

0 tornado · 24 wind · 0 hail in Pennsylvania

Preliminary reports: a count of reports, not of storms.

View reports: map, table & download

No watches or mesoscale discussions in Pennsylvania. Watches, discussions and warnings in the Live tracker

Warnings in Pennsylvania

4 warnings touching Pennsylvania

4 warnings touch Pennsylvania, most urgent first. A warning across a state line is counted here and in the other state.

NWS alerts checked 05:31Z · Data: NOAA/NWS

Since 04:32Z: no change in the warnings.

Warnings 4

Freeze Lackawanna; Luzerne until 18 Oct 13:00Z Track: Freeze Warning, Lackawanna; Luzerne
Freeze Lucas; Wood; Ottawa; Sandusky; Erie; Lorain; Cuyahoga; Geauga; Ashtabula Inland; Hancock; Seneca; Huron; Medina; Summit; Portage; Trumbull; Wyandot; Crawford; Richland; Ashland; Wayne; Stark; Mahoning; Marion; Morrow; Holmes; Knox; Southern Erie; Crawford until 18 Oct 13:00Z crosses Ohio and Pennsylvania Track: Freeze Warning, Lucas; Wood; Ottawa; Sandusky; Erie; Lorain; Cuyahoga; Geauga; Ashtabula Inland; Hancock; Seneca; Huron; Medina; Summit; Portage; Trumbull; Wyandot; Crawford; Richland; Ashland; Wayne; Stark; Mahoning; Marion; Morrow; Holmes; Knox; Southern Erie; Crawford
Freeze Warren; Potter; Elk; Cameron; Northern Clinton; Clearfield; Northern Centre; Southern Centre; Cambria; Blair; Huntingdon; Mifflin; Juniata; Somerset; Bedford; Fulton; Franklin; Tioga; Northern Lycoming; Sullivan; Southern Clinton; Southern Lycoming; Union; Snyder; Montour; Northumberland; Columbia; Perry; Dauphin; Schuylkill; Lebanon; Cumberland; Adams; York; Lancaster until 18 Oct 13:00Z Track: Freeze Warning, Warren; Potter; Elk; Cameron; Northern Clinton; Clearfield; Northern Centre; Southern Centre; Cambria; Blair; Huntingdon; Mifflin; Juniata; Somerset; Bedford; Fulton; Franklin; Tioga; Northern Lycoming; Sullivan; Southern Clinton; Southern Lycoming; Union; Snyder; Montour; Northumberland; Columbia; Perry; Dauphin; Schuylkill; Lebanon; Cumberland; Adams; York; Lancaster
Freeze Tuscarawas; Carroll; Columbiana; Coshocton; Harrison; Jefferson; Muskingum; Guernsey; Belmont; Noble; Monroe; Mercer; Venango; Forest; Lawrence; Butler; Clarion; Jefferson; Beaver; Allegheny; Armstrong; Washington; Greene; Westmoreland; Westmoreland Ridges; Fayette; Fayette Ridges; Indiana; Higher Elevations of Indiana; Hancock; Brooke; Ohio; Marshall; Wetzel; Marion; Monongalia; Ridges of Eastern Monongalia and Northwestern Preston; Preston; Eastern Preston; Western Tucker; Eastern Tucker until 18 Oct 13:00Z crosses Ohio, Pennsylvania and West Virginia Track: Freeze Warning, Tuscarawas; Carroll; Columbiana; Coshocton; Harrison; Jefferson; Muskingum; Guernsey; Belmont; Noble; Monroe; Mercer; Venango; Forest; Lawrence; Butler; Clarion; Jefferson; Beaver; Allegheny; Armstrong; Washington; Greene; Westmoreland; Westmoreland Ridges; Fayette; Fayette Ridges; Indiana; Higher Elevations of Indiana; Hancock; Brooke; Ohio; Marshall; Wetzel; Marion; Monongalia; Ridges of Eastern Monongalia and Northwestern Preston; Preston; Eastern Preston; Western Tucker; Eastern Tucker

All 4 warnings touching Pennsylvania, with their full text, in the Live tracker

65 warnings elsewhere in the country: the national list. Track Pennsylvania live

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.

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