A moist weather pattern brought waves of heavy rain to the area. Flash flooding was reported with the rainfall.
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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 moist weather pattern brought waves of heavy rain to the area. Flash flooding was reported with the rainfall.
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 Aug 3, 3:10 AM EST, 20 minutes earlier.
Area Forecast Discussion National Weather Service State College PA 410 AM EDT Fri Aug 3 2018 .SYNOPSIS... A plume of deep tropical moisture will continue to stream north across the Commonwealth into early tonight, bringing numerous showers and locally heavy to excessive rain of over one inch from scattered thunderstorms. A weak cold front will push east across Pennsylvania later tonight and early Saturday, sweeping the moisture off the Mid Atlantic and Southern new England Coast. Dry but still humid weather will return with increasing sunshine throughout the upcoming weekend, thanks to a weak area of high pressure building in from the Ohio River Valley. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... Locally heavy downpours continue to drift gradually north across the Central Mtns and West Branch portion of the Susq Valley. This rain was being triggered and focused within a zone of strong low-mid level FGEN, and impressive 925-850 mb Theta-E convergence, within the Right Entrance region of a 75-85kt upper level jet with its core extending from Lake Erie...NE to Ottawa and Montreal, Canada. The State College Area and portions of the South-central Mtns and West Branch part of the Susq Valley have had bullseyes on them for heavy rain early this morning. So far, 1.3 inches has fallen here on the rooftop of WFO CTP over the past 2 hours. MRMS Radar estimates have been lagging actual amounts overnight by about 25 percent, and 1 hour QPE to Flash Flood Guidance is 60-75% near and juts to the NW of KUNV attm. Several Minor Flood Advisories have been issued so far, and the initial area to focus on for a possible FFW would be southern and central Centre County as another wave of heavy rain is streaming up from the SSW and training right over the area. Some Hydrophobic streamflow values are now over 5 within a very small area right over the State College/Lemont Areas. Flash Flood Watch remains in effect for most of the area overnight...with FF guidance remaining very low given recent copious rains. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SATURDAY/... Flood threat ramps up with reprisal of convection today, and the threat for FF is still there for into this evening since the FFG is so very low. SPC has most of the CWA in a MRGL Risk for today and a moderately strong LLJ with 0-1km EHIs of 1-2 m2/s2 lifts north across the Susq Valley this afternoon/early evening. This will support some rotating updrafts and organized storm structure and the low potential for localized wet microbursts. Excessive rain outlook still has much of our FFA area in a MRGL to SLGT Risk for this morning and the new issuance for DAY 1 shortly shouldn't be much change. Support for this is easily found in the 00Z NAM QPF - esp over the central mtns and even Allegheny Plateau/Laurels. Showers/storms should wane and slide to the east Fri night as the trough to the west opens up a bit and we get more westerly flow aloft. Temps and dewpoints should continue at normal, summery levels. && .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/... A weak cool front finally pushes east across the state late Friday into Saturday followed by PWATs returning to near normal values of 25-30mm for the weekend within a weak ridge of sfc high pressure and generally fair/dry conditions. This should reduce the coverage of heavier showers and thunderstorms. Warmer temps, higher humidity and an increasing chance for mainly afternoon/evening showers and thunderstorms returns for early next week. && .AVIATION /08Z FRIDAY THROUGH TUESDAY/... Several bands of showers across the central part of the state. Adjusted the 06Z TAFS for this. Earlier discussion below. Deteriorating conditions expected overnight in stratus/fog, as the lower levels cool and moisten. Model soundings and latest SREF probability charts indicate IFR cigs will become likely across the northern mountains, where a moist southerly flow is forced to ascend the higher terrain. Elsewhere, MVFR cigs appear more likely. An area of low pressure will lift up the Appalachians tonight and Friday, causing scattered showers to become more numerous late tonight and Friday. An increased surge of moisture ahead of this feature could potentially produce a fairly widespread period of IFR cigs between 09Z-14Z. This low level moisture should mix out by midday. However, numerous showers and possible thunderstorms will likely result in occasional MVFR conditions the rest of the day, with a brief dip to IFR possible in any heavier shower or thunderstorm. .Outlook... Sat...AM low cigs/fog likely west. AM showers/cig reductions possible east. Sun...Patchy AM fog possible. Mon...Isolated PM tsra impacts possible western Pa. Tue...Scattered PM tsra impacts possible. && .CTP WATCHES/WARNINGS/ADVISORIES... Flash Flood Watch through this evening for PAZ012-017>019- 024>028-033>037-041-042-045-046-049>053-056>059-063>066. && SYNOPSIS...Lambert NEAR TERM...DeVoir/Lambert SHORT TERM...Dangelo/Lambert LONG TERM...Lambert/Gartner AVIATION...Fitzgerald/Martin
Hazardous Weather Outlook National Weather Service State College PA 327 AM EDT Fri Aug 3 2018 PAZ004>006-010-011-040730- Warren-McKean-Potter-Elk-Cameron- 327 AM EDT Fri Aug 3 2018 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...Today and Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ012-017>019-024>026-033>035-037-041-045-040730- Northern Clinton-Clearfield-Northern Centre-Southern Centre-Cambria- Blair-Huntingdon-Somerset-Bedford-Fulton-Tioga-Northern Lycoming- Southern Clinton- 327 AM EDT Fri Aug 3 2018 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING... 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. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ027-028-036-042-046-049>053-056>059-063>066-040730- Mifflin-Juniata-Franklin-Sullivan-Southern Lycoming-Union-Snyder- Montour-Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon- Cumberland-Adams-York-Lancaster- 327 AM EDT Fri Aug 3 2018 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING... 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. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. Lambert
The State College radar (KCCX), 16 km away, was scanning. The volume nearest the first event began at 08:30 UTC.
7 flash flood. Local standard time, as filed.
Early morning heavy rainfall brought flash flooding to the State College area. Numerous roads were closed, including Fox Hollow Road, West Pine Grove Road and portions of East College Avenue.
Flash flooding with water flowing into houses and across roads between 13th and 15th Streets in Altoona.
Numerous reports of water and debris across roadways, including Julia Street, Worlds End Road in Forks Township and Route 220 in Dushore.
Widespread flash flooding across the area. Some roads impacted included Fox Hollow Road, Buffalo Run Road, Rock Road, the Benner Pike near the Sheetz, and East College Avenue by the YBC.
Flash flooding closed Lower Barbours Road along The Loyalsock Cree. Many roads were closed across the area.
Flash flooding resulted in a water rescue on Camp Betty Washington Road in York Township. Flooding was also reported between Camp Betty Washington Road and Chapel Church Road. A portion of Springwood Road was washed out. A water rescue also occurred on Frysville Road near the Prince mobile home park.
A water rescue occurred on Creamery Road at the railroad tracks in West Cocalico Township.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2018Every state in 2018This day in weather historyWarnings in Pennsylvania, August 2018
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: 781328, 781329, 781330, 781332, 781331, 781339, 781346.