A line of severe storms developed in a low-CAPE / high-shear environment over western Pennsylvania during the mid-evening hours, and moved across central Pennsylvania during the late evening into the early overnight hours. Widespread wind damage was observed with this line of storms, along with 4 confirmed tornadoes.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CTP wrote it up.
A line of severe storms developed in a low-CAPE / high-shear environment over western Pennsylvania during the mid-evening hours, and moved across central Pennsylvania during the late evening into the early overnight hours. Widespread wind damage was observed with this line of storms, along with 4 confirmed tornadoes.
The local office's own words before the first event, 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 the first event at Apr 14, 4:45 PM EST, 1 hour 32 minutes earlier.
Area Forecast Discussion National Weather Service State College PA 545 PM EDT Sun Apr 14 2019 .SYNOPSIS... Low pressure over the Ohio Valley will track across upstate New York tonight, as the trailing cold front pushes through Pennsylvania. Upper level ridging is expected over the region during the middle of the week, then a slow-moving cold front will likely push into the region late Friday into early Saturday. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... See hydro section for thoughts on flooding. SWOMCD num 346 mentions the western portions of the CWA in the threat for severe winds and tornadoes. Some clearing and late day heating are getting into Warren Co and could come soon to the other western counties. But, sfc-based CAPE/destabilization is going to be marginal for the rest of the CWA before nightfall (coming soon). That may be the only thing which keep the svr threat down tonight. Prev... As of 2 pm, max 10 hour rain totals are closing in on 0.90" over Warren County. Sfc warm front is draped across the Central Mountains, with KUNV having broken into the warm sector with a dewpoint around 60F (KLHV 63F Td as well). Warm front separates soupy 60+ degree dewpoint air from cool 40s dewpoints NW and N Central Mountains and Pocono Plateau. Boundary layer convergence and deep layer moisture increasing substantially this afternoon ahead of deep upper trof swinging into the Ohio Valley from the Upper Midwest. Light to moderate rain has overspread all but the southeast quarter of my area. Most areas outside of the northwest mountains have only seen a tenth of two of rainfall thus far today, while the northwest has exceeded three quarters of an inch over the last 10 hours. Convective elements within and ahead of this initial rain area remain in check given weak forcing to release instability. Consensus of CAM solutions continue to track this area ENE and into the Lower Susq before lifting it off to the northeast. HRRR solution brings another slug of moderate rainfall into my southeast with a renewed surge and perhaps convective release after 20z, while a lull is seen across the Central Mountains. Meanwhile, cold front lags well to the west and isn't progged to reach the OH/PA border until 00z. Main focus for tonight remains on potential of severe weather and localized flash flooding tonight associated with passage of cold front. Nearly all convection-allowing models show a line of strong convection marching across the forecast area later this evening through 08z ahead of the cold front. Strongly forced, high shear/low cape environment suggestts a QLCS scenario, but given the time of day and limited instability, SPC believes this line will be weakening, particularly east of the Alleghenies. So, its uncertain how much of a severe punch central and especially eastern PA will see. Model timing of the fropa and greatest impacts range from just after 00Z over Warren Co, to between 07-09Z over Lancaster Co if the line maintains integrity and intensity. As previously noted, the orientation of the 50kt 0-3km shear vectors are progged to run close to parallel with the line of convection. However, can't rule out an isolated tornado or two where rear inflow jet causes any line surges/bows. In addition, WPC has placed most of the forecast area within a slight risk area for flash flooding tonight. However, HREFV2 data indicates the greatest threat will be over the northwest half of the CWA, where some members indicate the potential of up to 3 inches in a few spots. As previously mentioned, some of the northwest has already accumulated around 0.9" in 10 hours. 3hr FFG numbers are ranging close to 2 inches over most of the area. && .SHORT TERM /6 AM MONDAY MORNING THROUGH 6 PM MONDAY/... Blustery and much cooler conditions are expected Monday, as strengthening low pressure passes north of Pa. Passage of upper trough will likely produce scattered rain/snow showers across the Allegheny Plateau. However, surface temps should remain too warm for any snow accumulations. A downsloping westerly flow should result in dry weather across the Susq Valley. However, cold temps aloft will likely result in a good deal of stratocu. Bukfit soundings support wind gusts Monday afternoon close to 40kts across southern Pa, so later shifts may need to consider a possible wind advisory. && .LONG TERM /MONDAY NIGHT THROUGH SUNDAY/... Left mentioned of some showers in for later Tuesday into Thursday. Much of this time will be dry. The main issue will be another huge weather system by Friday. Showers and some thunderstorms will be associated with this system. For now, just minor adjustments. For later Saturday into early next Monday, the risk of showers tapers off. GFS and EC still different from run to run and day to day, on how the upper level trough may split apart, and dig southeast. This will make a difference on how things linger past Friday. Either way, not looking quite as cold as it did several days ago. Thus the chance of any snow showers on the back side of the storm is less now. && .AVIATION /22Z SUNDAY THROUGH FRIDAY/... An area of IFR/MVFR clouds with lcl cigs AOB 1.5k feet continues to expand into the centreal portion of the CWA this afternoon as warm front lifts northward. Expecting it to work into the n central mountains and northeast by 20z as warm front lifts northward. As southern parts of the region emerge into the warm sector this afternoon, ceilings will improve somewhat to MVFR/VFR but unstable airmass will support scattered to numerous showers and isolated thunderstorms in modest CAPE. Cold front enters western PA early this evening and crosses the region through late tonight. It is expected to be accompanied by a potentially potent north-south oriented line of showers/ tstms with a 1-2 hour period of very gusty winds and heavy rainfall (and significant aviation impacts). Impacts will be in the evening across western terminals and after midnight in the east. Behind the front, westerly flow picks up with a period of gusts to 30-40 mph on Monday along with ceiling restrictions that will be mainly confined to the western/northern terrain. .Outlook... Mon...AM Rain and restrictions. Becoming windy. Tue...Trending VFR; winds subsiding. Wed-Thu...Chance of a shower. Mainly VFR. Fri...Widespread restrictions likely with showers and thunderstorms. && .HYDROLOGY... 0.75-0.90" of rainfall through the day today over the NW has things very wet and many of the smallest waterways are likely high/nearly full. The line of convection to the west is advnacing slower to the east than the elements are moving N/NE. Thiey could also receive more than one thunderstorm this evening/early tonight. Felt the threat was much higher than FFG may reflect there with most of the water not accounted for in the guidance. Plus, we are solidly in the SLGT risk of excessive rain per WPC guidance. The southeastern counties got some heavy rain and patchy flooding two days ago, and they are starting to pick up some rain now. There is some thunder embedded in the stuff moving up from MD/VA. HRRR paints a few stripes of >1" rain in convection there. The Front and associated thunder/heavy rain does not arrive until late tonight, and we are always wary of overnight convection. The deep 60+KT LLJet is loaded with moisture. 1 hr FFG ranges between one inch and two inches. We will also have to watch out for the Swatara Creek which is running high and is arguably the wettest basin around the state right now. && .CTP WATCHES/WARNINGS/ADVISORIES... Flash Flood Watch until 2 AM EDT Monday for PAZ004-005-010. Flash Flood Watch through late tonight for PAZ057>059-065-066. && SYNOPSIS...DeVoir/Martin NEAR TERM...Dangelo/DeVoir/Fitzgerald SHORT TERM...DeVoir/Fitzgerald LONG TERM...Martin AVIATION...DeVoir/RXR HYDROLOGY...Dangelo
Hazardous Weather Outlook National Weather Service State College PA 653 PM EDT Sun Apr 14 2019 PAZ006-011-012-017>019-024>028-033>035-037-041-042-045-046-049>053- 152300- Potter-Cameron-Northern Clinton-Clearfield-Northern Centre- Southern Centre-Cambria-Blair-Huntingdon-Mifflin-Juniata-Somerset- Bedford-Fulton-Tioga-Northern Lycoming-Sullivan-Southern Clinton- Southern Lycoming-Union-Snyder-Montour-Northumberland-Columbia- 653 PM EDT Sun Apr 14 2019 ...TORNADO WATCH 69 IN EFFECT UNTIL 3 AM EDT MONDAY... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Tornado Watch. Severe thunderstorms with damaging winds 60 mph or greater with tornadoes possible this evening and early tonight. Heavy rain from thunderstorms may lead to isolated instances of flooding. .DAYS TWO THROUGH SEVEN...Monday through Saturday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ036-056>059-063>066-152300- Franklin-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York- Lancaster- 653 PM EDT Sun Apr 14 2019 ...FLASH FLOOD WATCH IN EFFECT UNTIL 6 AM EDT MONDAY... ...TORNADO WATCH 69 IN EFFECT UNTIL 3 AM EDT MONDAY... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Tornado Watch. Flash Flood Watch. Severe thunderstorms with damaging winds 60 mph or greater with tornadoes possible this evening and early tonight. Heavy rain from thunderstorms may lead to isolated instances of flooding. .DAYS TWO THROUGH SEVEN...Monday through Saturday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ004-005-010-152300- Warren-McKean-Elk- 653 PM EDT Sun Apr 14 2019 ...TORNADO WATCH 69 IN EFFECT UNTIL 3 AM EDT MONDAY... ...FLASH FLOOD WATCH IN EFFECT UNTIL 2 AM EDT MONDAY... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Tornado Watch. Flash Flood Watch. Severe thunderstorms with damaging winds 60 mph or greater with tornadoes possible this evening and early tonight. Heavy rain from thunderstorms may lead to isolated instances of flooding. .DAYS TWO THROUGH SEVEN...Monday through Saturday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather.
Special Weather Statement National Weather Service State College PA 642 PM EDT SUN APR 14 2019 PAZ057-059-064>066-142330- York PA-Lancaster PA-Adams PA-Lebanon PA-Dauphin PA- 642 PM EDT SUN APR 14 2019 ...A CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT PARTS OF LANCASTER...ADAMS... YORK...DAUPHIN...AND LEBANON COUNTIES UNTIL 730 PM EDT... At 639 PM EDT, Doppler radar indicated a cluster of strong thunderstorms just south of Gettysburg, moving northeast at 45 mph. This area is part of a band of storms that extend southward into northern Maryland. Wind gusts up to 50 mph are possible. Locations impacted include... York, Hanover, Weigelstown, Elizabethtown, Columbia, Middletown, Millersville, Gettysburg, Mount Joy, Parkville, Red Lion, Spry, Dallastown, Hampton, Shiloh, East York, Stonybrook-Wilshire, West York, Salunga-Landisville and Littlestown. PRECAUTIONARY/PREPAREDNESS ACTIONS... These storms may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 3987 7737 4030 7652 3972 7618 3972 7736 TIME...MOT...LOC 2239Z 240DEG 49KT 3983 7721 Martin
Special Weather Statement National Weather Service State College PA 713 PM EDT SUN APR 14 2019 PAZ004-142345- Warren PA- 713 PM EDT SUN APR 14 2019 ...A STRONG THUNDERSTORM COULD BRUSH NORTHWESTERN WARREN COUNTY THROUGH 745 PM EDT WITH ADDITIONAL STORMS EXPECTED AFTER THAT... At 710 PM EDT, Doppler radar indicated a strong thunderstorm over Waterford, moving northeast at 60 mph. Wind gusts up to 50 mph are possible. Locations impacted include... Columbus, Spring Creek, Lottsville, Sugar Grove and Bear Lake. LAT...LON 4200 7923 4181 7961 4199 7961 4200 7960 TIME...MOT...LOC 2310Z 233DEG 50KT 4193 8003 Evanego
The Sterling radar (KLWX), 106 km away, was scanning. The volume nearest the first event began at 23:17 UTC.
35 thunderstorm wind, 2 hail. Local standard time, as filed.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees across Hoff Road near Porters Sideling.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires across Rippling Run Road near Winterstown.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees north of Kreutz Creek.
A severe thunderstorm producing winds estimated near 60 mph knocked down numerous trees across Warren County.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires onto a home in North Warren.
A severe thunderstorm producing winds estimated near 60 mph knocked down a tree and wires onto a vehicle in North Warren.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees around Bradford, including on Hall Road.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees in the city of Bradford.
A severe thunderstorm producing winds estimated near 60 mph knocked down a tree across the intersection of Windfall, Smith and Loop Roads west of Eldred.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires on Poplar Street in Kane.
A severe thunderstorm producing winds estimated near 60 mph knocked down three large trees in Boswell.
A severe thunderstorm producing winds estimated near 60 mph knocked down a tree across the intersection of Lincoln Highway and Lambertsville Road near Stoystown.
A severe thunderstorm producing winds estimated near 60 mph knocked down several trees across Somerset County, including a tree onto a residence in Cairnbrook.
A severe thunderstorm producing winds estimated near 60 mph knocked down a tree near Mountaindale.
A severe thunderstorm producing winds estimated near 60 mph knocked down wires in Brownstown.
A severe thunderstorm produced winds estimated near 60 mph near Brookland.
A severe thunderstorm producing winds estimated near 60 mph knocked down a tree onto a car at the intersection of 4th Street and 3rd Avenue in Altoona.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees near Lincoln Caverns.
A severe thunderstorm producing winds estimated near 60 mph knocked down a tree along old Route 220.
A severe thunderstorm producing winds estimated near 60 mph knocked down wires onto Railroad Street in Lewistown.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees in Morris.
A severe thunderstorm produced winds measured at 58 mph at Lock Haven Airport.
A severe thunderstorm producing winds estimated near 60 mph knocked down numerous trees from Port Royal to Thompsontown.
A severe thunderstorm produced quarter-sized hail near McClure.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees and blew a roof off of a shed in Beavertown.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees on the Penn State Mont Alto campus.
A severe thunderstorm produced ping-pong ball sized hail near Penns Creek.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees onto a house in Middleburg.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees (and produced penny-sized hail) in Mifflinburg.
A severe thunderstorm producing winds estimated near 60 mph knocked down power lines, tipped a tractor trailer on it's side and knocked down a barn on Smoketown Road near Lewisburg.
A National Weather Service storm survey team concluded that a Microburst produced damage in Millersburg during the early morning hours of April 15. A path of sporadic damage along a path about 3/4 of a mile long started on River Street, and continued across the town. In addition to a number of trees being knocked down, a church at the corner of Market and North Street sustained significant roof damage. Near the end of the damage swath, a roof was blown off a warehouse along North Street. Finally, some athletic mats were lofted off of the track and field area of Millersburg Area Middle School.
A severe thunderstorm producing winds estimated near 60 mph blew off a barn roof on Exchange Road near Muncy.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires near the intersection of Route 405 and Route 45 in Montandon.
A National Weather Service storm survey confirmed straight line wind damage near Limestoneville in Montour County Pennsylvania on April 15, 2019.
Several pockets of damage along and north of the Limestone Ridge in Montour County were surveyed. A single family home near the intersection of Limestone Rd and Bypass Rd sustained roof damage, as well as structural damage to one exterior brick house wall. Farther northeast, a barn on Fairview Rd near Delong Rd was destroyed. Along the damage path, several trees were knocked down. Damage in the more severe damage areas were characteristic of a downburst, with peak winds estimated near 105 mph.
A severe thunderstorm producing straight-line winds estimated near 95 mph knocked down several dozen trees and blew a portion of a roof off of a barn near Millville.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires along Wilhour Road near Elizabethville.
A severe thunderstorm producing winds estimated near 60 mph knocked down numerous trees in Dushore, blocking many streets.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2019Every state in 2019This day in weather historyWarnings in Pennsylvania, April 2019
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 815956, 815958, 815965, 815968, 815969, 815970, 815971, 815975, 815973, 815974, 815992, 815994, 815996, 816049, 816050, 816070, 816051, 816052, 816053, 816054, 816055, 816071, 816056, 816068, 816057, 816058, 816069, 816059, 816060, 816061, 816062, 816063, 816064, 818362, 818964, 816067, 816072.