Alert archive / Pennsylvania / Flash Flood Warnings in 2020
Flash Flood Warning 4, NWS State College, PA
NWS State College, PA issued this flash flood warning at Jul 8, 2020, 5:52 PM EDT for York County, Pennsylvania. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 8, 2020, 5:52 PM EDT (21:52 UTC)
- Expired
- Jul 8, 2020, 8:45 PM EDT
- In force
- 3 hr
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Flood severity
- None
County York County, PA
The radar
The Sterling radar (KLWX), 136 km from the middle of the area, began a volume at 21:52 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 8, 6:19 PM EDT | FLASH FLOOD | 1 N Stonybrook, PA | CAR UNDER WATER ON EAST MARKET STREET. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 27 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 9.9 hours before the alert went out and 134 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.
- Mixed-layer CAPE
- 394 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 926 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
878
WGUS51 KCTP 082152
FFWCTP
PAC133-090045-
/O.NEW.KCTP.FF.W.0004.200708T2152Z-200709T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service State College PA
552 PM EDT Wed Jul 8 2020
The National Weather Service in State College PA has issued a
* Flash Flood Warning for...
Central York County in south central Pennsylvania...
* Until 845 PM EDT.
* At 551 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain over Hallam and East York. The storm is nearly
stationary, but is expanding westward into York. Up to two inches
of rain have already fallen and rainfall rates are as high as 5
inches per hour. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flooding include...
York, Spry, Shiloh, East York, Stonybrook-Wilshire, West York,
Grantley, Tyler Run-Queens Gate, Hallam, Emigsville, Wrightsville,
North York, Yorklyn, Yorkana, East Prospect, Penn State York and
York College Of Pennsylvania.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 4000 7680 4006 7662 4004 7657 4005 7654
4002 7653 3999 7650 3997 7650 3992 7662
3991 7673
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2-3 INCHES IN 1 HOUR
$$
Dangelo2 follow-up statements
449
WGUS71 KCTP 082240
FFSCTP
Flash Flood Statement
National Weather Service State College PA
640 PM EDT Wed Jul 8 2020
PAC133-090045-
/O.CON.KCTP.FF.W.0004.000000T0000Z-200709T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
York PA-
640 PM EDT Wed Jul 8 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR
CENTRAL YORK COUNTY...
At 638 PM EDT, law enforcement reported flash flooding in central
York County around the City of York and East York. two to 5 inches
of rain has fallen per radar estimates. Flash flooding is already
occurring.
The rain is becoming light and moving to the northwest. Additional
rainfall amounts of less than a half of an inch are possible in the
warned area.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Law enforcement.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 4000 7680 4006 7662 4004 7657 3997 7657
3992 7662 3991 7673
FLASH FLOOD...OBSERVED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
Dangelo683
WGUS71 KCTP 090045
FFSCTP
Flash Flood Statement
National Weather Service State College PA
845 PM EDT Wed Jul 8 2020
PAC133-090055-
/O.EXP.KCTP.FF.W.0004.000000T0000Z-200709T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
York PA-
845 PM EDT Wed Jul 8 2020
...THE FLASH FLOOD WARNING FOR CENTRAL YORK COUNTY HAS EXPIRED...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 4000 7680 4006 7662 4004 7657 3997 7657
3992 7662 3991 7673
$$
DangeloWhat forecasters said that day
The local office's own words before this flash flood warning 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 flash flood warning went out at Jul 8, 5:50 PM EDT, 2 minutes earlier.
Area forecast discussion, Jul 8, 5:50 PM EDT, 2 minutes before
Area Forecast Discussion
National Weather Service State College PA
550 PM EDT Wed Jul 8 2020
.SYNOPSIS...
A rather stagnant mid summertime pattern continues through the
weekend with isolated to scattered afternoon and evening
thunderstorms. Some of the thunderstorms could bring locally
heavy rain and gusty winds.
The eastern third of the state could experience a larger area
of moderate to heavy rain late Friday morning through early
friday night as a sub tropical low pressure system rides north
along or just inland from the Mid Atlantic Coast.
&&
.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
Isolated to scattered SHRA/TSRA acrs central and southern PA
this afternoon (with more numerous and heavier showers and TSRA
over the far eastern portions of the CWA) will likely see a
slight expansion of coverage late today through early this
evening as showers and TSRA that formed along the Lake Erie
breeze head south into PA from New York State, and outflow
boundaries from the current Central and Southern PA convection
enhances a convergence zone near and to the north of I-80.
Last few runs of the HRRR display this trend. Main area of
concern will still be across the Susq Valley and Western Poconos
where FFG values are only 1-1.5 inches and the heaviest rain
fell so far today (over 2 inches in parts of Schuylkill County.
A Flash Flood Watch continues through 02Z Thu for several
counties in our eastern CWA.
Late afternoon temps will be between 85 and 90F with the highest
heat indices mainly in the mid 90s throughout the central and
southern valleys.
Showers diminish quickly between 03-05Z per the HRRR and HREFV2,
leaving the remainder of the night muggy with light wind and
partly cloudy skies.
Daybreak low temps will vary from the mid 60s across the
northern and western Mtns to the low 70s in the SE metro areas.
&&
.SHORT TERM /6 AM THURSDAY MORNING THROUGH 6 PM THURSDAY/...
Patchy fog and low stratus to start Thursday should give way to
a mix of sun and clouds for the bulk of the day.
Convective potential looks less based on HREFV2 and examination
of mid level temps which will be 1-2C warmer than today, which
should effectively cap deep convection outside of subtle
terrain forcing and along diff heating boundaries (near morning
cloud edges and areas that have received heavier rain the past
several days).
highest POPs 20-30% were painted across the northern tier of
CPA.
High temps will be very similar to Wednesday's ranging from the
mid 80s across the higher terrain to the low 90s in the Central
and Southern Valleys. There will be no relief from the high
humidity and mugginess.
&&
.LONG TERM /THURSDAY NIGHT THROUGH WEDNESDAY/...
First half of the long term period will be dominated by upper
troffing developing over the northeast, by a series of shortwaves
forecast to move east through the Northern Plains and Great
Lakes, and the track of a disturbance currently off the Carolina
coast.
The coastal low will likely turn winds out of the SE and E for
later Friday and into the first part of the weekend, bringing
an increase in humidity and clouds over at least the eastern
half of the CWA. The bulk of the precip associated with the
coastal low looks to fall east of the area, areas along the
eventual track of the low will see increased pops.
The weekend looks unsettled as an upper trough digs over the
eastern US and interacts with the coastal low. Cooler temps
aloft and plenty of clouds should bring a period of relief to
the heat, with afternoon highs just a couple degrees above
average Fri-Tue.
For the second half of the period, guidance suggests that upper
heights will build to near 600 dam over PA by late next week as
the upper trof that dominated the first half of the period lifts
out. Elevated threats from heat look to spill back into our
area by Wed of next week and continue through the end of the
long term period.
&&
.AVIATION /22Z WEDNESDAY THROUGH MONDAY/...
Scattered showers/storms continue to pop up and drift slowly
southeastward this evening, and may cause brief reductions in
cigs and vsby as they pass.
Tonight will be a near repeat of the past couple of nights,
with lows clouds and/or patchy fog causing reductions. Expect
widespread MVFR cigs/vsbys, with a few sites trending IFR for a
couple of hours towards sunrise.
Expect improving conds on Thursday, becoming VFR as any fog
burns off and the low clouds lift and dissipate. There could be
a late day shower or storm, although there should be less
convective activity than what we've seen the past couple of
days.
Outlook...
Thu...Patchy AM fog/low clouds. Becoming VFR.
Fri...Reductions possible in patchy AM fog/low clouds.
Showers/storms developing (mainly SE).
Sat...Scattered showers and storms with reductions likely.
Sun-Mon...Generally VFR, although a PM shower or storm is
possible.
&&
.CLIMATE...
It looks like the streak of 90-plus days at IPT and MDT is over.
Temps Tuesday only hit 83 at IPT and 84 at MDT.
......................
A sustained period of above-average temperatures is expected
to continue through the end of the week. A heat wave is defined
as 3 or more days with temperatures greater than or equal to 90
degrees. Here are some facts about previous heat waves from
Harrisburg (MDT) Williamsport (IPT), and State College (STC),
which have climate periods of record dating back to the late
1800s.
Recent high temperatures:
7/2 7/3 7/4 7/5 7/6 7/7 90-deg streak
IPT: 95 95 91 93 94 83 5 days (over)
MDT: 93 97 94 96 97 84 5 days (over)
STC: 89 90 88 89 92 80 1 day (over)
Longest stretch of consecutive 90 degree days:
IPT: 15 (July 4 - July 18, 1988)
MDT: 11 (5 times, most recently July 22 - August 1, 1999)
STC: 15 (July 4 - July 18, 1988)
Annual occurrences of 90 degree days:
Average Most (Year) Least (Year) 2020 (thru 7/7)
IPT: 16 42(1988) 0 (1979) 6
MDT: 20 60(1966) 3 (2004) 8
STC: 8 35(1988) 0 (11 times) 3
How common are stretches of 5 or more consecutive 90 degree days?
IPT: 15 times since 2000 (12 of 20 years)
MDT: 19 times since 2000 (12 of 20 years)*
STC: 4 times since 2000 ( 4 of 20 years)
*MDT had a stretch of 10 straight 90 degree days from July 3 -
July 12, 2012. Time will tell if this year's 90 degree stretch
that began on July 2 can rival the streak 8 years ago.
&&
.CTP WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch until 10 PM EDT this evening for PAZ053-058-
059.
&&
SYNOPSIS...Lambert/Steinbugl
NEAR TERM...Lambert
SHORT TERM...Lambert
LONG TERM...Gartner/Colbert
AVIATION...Lambert/Evanego
CLIMATE...LambertHazardous weather outlook, Jul 8, 12:49 PM EDT, 5 hours 3 minutes before
Hazardous Weather Outlook National Weather Service State College PA 1249 PM EDT Wed Jul 8 2020 PAZ006-011-012-017>019-024>028-033>037-041-042-045-046-049>052-056- 057-063>066-091700- Potter-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-Perry-Dauphin-Cumberland-Adams-York-Lancaster- 1249 PM EDT Wed Jul 8 2020 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Scattered slow moving thunderstorms will develop this afternoon and continue into this evening. Localized flooding is possible primarily in areas that can experience rapid runoff from heavy rainfall. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ004-005-010-091700- Warren-McKean-Elk- 1249 PM EDT Wed Jul 8 2020 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ053-058-059-091700- Columbia-Schuylkill-Lebanon- 1249 PM EDT Wed Jul 8 2020 ...FLASH FLOOD WATCH IN EFFECT UNTIL 10 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon 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...Thursday through Tuesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather.
In the hours before
Special weather statement, Jul 8, 4:06 PM EDT, 1 hour 46 minutes before
Special Weather Statement
National Weather Service State College PA
406 PM EDT Wed Jul 8 2020
PAZ037-082100-
Tioga PA-
406 PM EDT Wed Jul 8 2020
...STRONG THUNDERSTORMS WILL AFFECT PARTS OF TIOGA COUNTY UNTIL 500
PM EDT...
At 405 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from near Caton to near Lawrenceville to Elkland.
Movement was east southeast at 15 mph.
Wind gusts 40 to 50 mph and pea size hail are possible.
Locations impacted include...
Elkland, Lawrenceville, Millerton, Tioga, Roseville, Osceola and
Tioga Junction.
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 4199 7692 4182 7690 4180 7703 4200 7743
4200 7693
TIME...MOT...LOC 2005Z 287DEG 11KT 4204 7697 4195 7721 4199 7732
LambertSpecial weather statement, Jul 8, 4:43 PM EDT, 1 hour 9 minutes before
Special Weather Statement National Weather Service State College PA 443 PM EDT Wed Jul 8 2020 PAZ066-082115- Lancaster PA- 443 PM EDT Wed Jul 8 2020 ...A STRONG THUNDERSTORM WILL AFFECT PARTS OF LANCASTER COUNTY UNTIL 515 PM EDT... At 442 PM EDT, Doppler radar indicated a strong thunderstorm from Mount Joy to Manheim, moving east at 15 mph. Wind gusts 40 to 50 mph and pea size hail are possible. Locations impacted include... Lancaster, Ephrata, Columbia, Lititz, Millersville, Willow Street, Mount Joy, New Holland, Manheim, East Petersburg, Akron, Leola, Paradise, Salunga-Landisville, Maytown, Rothsville, Strasburg, Mountville, Marietta and Terre Hill. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Turn around don't drown. && LAT...LON 4007 7657 4020 7642 4018 7598 3991 7624 TIME...MOT...LOC 2042Z 292DEG 12KT 4012 7642 Gartner
Special weather statement, Jul 8, 4:58 PM EDT, 54 minutes before
Special Weather Statement
National Weather Service State College PA
458 PM EDT Wed Jul 8 2020
PAZ051>053-082145-
Columbia PA-Northumberland PA-Montour PA-
458 PM EDT Wed Jul 8 2020
...STRONG THUNDERSTORMS WILL AFFECT PARTS OF NORTHUMBERLAND...
MONTOUR...AND COLUMBIA COUNTIES UNTIL 545 PM EDT...
At 456 PM EDT, Doppler radar indicated a strong thunderstorm over
Exchange, moving east at 15 mph.
Wind gusts 40 to 50 mph and pea size hail are possible.
Locations impacted include...
Bloomsburg, Berwick, Milton, Danville, Northumberland, Watsontown,
Riverside, Catawissa, Mifflinville, Lightstreet, Almedia, New
Columbia, Montandon, Fernville, Mechanicsville, Buckhorn, Jerseytown,
Rupert, Rohrsburg and Iola.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Turn around don't drown.
&&
LAT...LON 4094 7623 4090 7684 4091 7685 4101 7687
4108 7686 4117 7671 4115 7668 4116 7659
4119 7656 4121 7632 4114 7628 4114 7623
4103 7623 4096 7621
TIME...MOT...LOC 2056Z 224DEG 12KT 4113 7670
Gartner/DangeloSpecial weather statement, Jul 8, 5:18 PM EDT, 34 minutes before
Special Weather Statement
National Weather Service State College PA
518 PM EDT Wed Jul 8 2020
PAZ066-082145-
Lancaster PA-
518 PM EDT Wed Jul 8 2020
...STRONG THUNDERSTORMS WILL AFFECT PARTS OF LANCASTER COUNTY UNTIL
545 PM EDT...
At 516 PM EDT, Doppler radar indicated a line of strong
thunderstorms from near New Holland to Leacock to Lancaster, moving
east at 15 mph.
Wind gusts 40 to 50 mph and pea size hail are possible.
Locations impacted include...
Lancaster, Ephrata, New Holland, Akron, Leola, Paradise, Rothsville,
Strasburg, Gap, Terre Hill, Churchtown, Leacock, Bareville, Lampeter,
Atglen, Intercourse, Christiana, Fivepointville, Blue Ball and
Georgetown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Turn around don't drown.
&&
LAT...LON 4010 7594 4004 7594 3996 7599 3993 7598
3993 7600 3987 7599 3987 7601 4006 7635
4018 7621 4019 7594 4014 7587
TIME...MOT...LOC 2116Z 283DEG 22KT 4009 7622
Gartner/TyburskiSpecial weather statement, Jul 8, 5:28 PM EDT, 24 minutes before
Special Weather Statement
National Weather Service State College PA
528 PM EDT Wed Jul 8 2020
PAZ065-066-082200-
York PA-Lancaster PA-
528 PM EDT Wed Jul 8 2020
...STRONG THUNDERSTORMS WILL AFFECT PARTS OF LANCASTER AND YORK
COUNTIES UNTIL 600 PM EDT...
At 525 PM EDT, Doppler radar indicated strong thunderstorm near
Bainbridge, Marietta and Hallam moving east at 15 mph.
Wind gusts 40 to 50 mph and pea size hail are possible.
Locations impacted include...
Lancaster, Columbia, Millersville, Willow Street, Mount Joy, East
York, Stonybrook-Wilshire, Salunga-Landisville, Maytown, Strasburg,
Mountville, Manchester, Hallam, Emigsville, Marietta, Quarryville,
Wrightsville, Yorklyn, Mount Wolf and Bainbridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
This storm 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 4000 7676 4009 7669 4012 7662 4006 7635
3987 7599 3987 7600 3986 7601 3983 7634
TIME...MOT...LOC 2125Z 283DEG 21KT 3999 7657
Gartner/EvanegoSpecial weather statement, Jul 8, 5:52 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service State College PA
552 PM EDT Wed Jul 8 2020
PAZ041-042-082215-
Sullivan PA-Northern Lycoming PA-
552 PM EDT Wed Jul 8 2020
...STRONG THUNDERSTORMS WILL AFFECT PARTS OF SULLIVAN AND LYCOMING
COUNTIES UNTIL 615 PM EDT...
At 551 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from Lovelton to near Grover. Movement was south at
25 mph.
Wind gusts 40 to 50 mph and pea size hail are possible.
Locations impacted include...
Kettle Creek Gorge, Ricketts Glen State Park, Muncy Valley, Lincoln
Falls, Shunk, Barbours, Dushore, Laporte, Forksville, Eagles Mere and
Hillsgrove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
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 4149 7624 4131 7631 4135 7678 4159 7689
4160 7684 4158 7676 4154 7623
TIME...MOT...LOC 2151Z 346DEG 29KT 4153 7620 4157 7689
GartnerThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 8:00 PM EDT | Special Weather Statement | CTP | Elk | 45 min |
| Jul 8, 11:14 AM EDT | Areal Flood Advisory | CTP | Schuylkill | 106 min |
| Jul 8, 12:19 PM EDT | Flash Flood Watch | CTP | Columbia, Lebanon, Schuylkill | 9 hr |
| Jul 8, 1:16 PM EDT | Areal Flood Advisory | CTP | Schuylkill | 3 hr |
| Jul 8, 3:44 PM EDT | Special Weather Statement | CTP | Lebanon | 31 min |
| Jul 8, 4:06 PM EDT | Special Weather Statement | CTP | Tioga | 54 min |
| Jul 8, 4:35 PM EDT | Areal Flood Advisory | CTP | Lancaster | 115 min |
| Jul 8, 4:43 PM EDT | Special Weather Statement | CTP | Lancaster | 32 min |
| Jul 8, 4:58 PM EDT | Special Weather Statement | CTP | Columbia, Montour | 47 min |
| Jul 8, 5:03 PM EDT | Areal Flood Advisory | CTP | Somerset | 117 min |
| Jul 8, 5:18 PM EDT | Special Weather Statement | CTP | Lancaster | 27 min |
| Jul 8, 5:23 PM EDT | Flash Flood Warning | CTP | Somerset | 3 hr |
| Jul 8, 5:28 PM EDT | Special Weather Statement | CTP | Lancaster | 32 min |
| Jul 8, 5:44 PM EDT | Areal Flood Advisory | CTP | Cambria | 2 hr |
| Jul 8, 5:48 PM EDT | Areal Flood Advisory | CTP | York | 3 hr |
| Jul 8, 5:52 PM EDT | Special Weather Statement | CTP | Sullivan | 23 min |
| Jul 8, 6:01 PM EDT | Severe Thunderstorm Warning | CTP | York | 44 min |
| Jul 8, 6:04 PM EDT | Special Weather Statement | CTP | Northumberland | 41 min |
| Jul 8, 6:09 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Snyder, Union | 51 min |
| Jul 8, 6:15 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Sullivan | 60 min |
| Jul 8, 6:24 PM EDT | Special Weather Statement | CTP | Cumberland | 36 min |
| Jul 8, 6:33 PM EDT | Areal Flood Advisory | CTP | York | 3 hr |
| Jul 8, 6:54 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Juniata, Northumberland, Perry, Snyder | 36 min |
| Jul 8, 6:58 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Montour, Northumberland, Sullivan, Union | 62 min |
| Jul 8, 7:14 PM EDT | Special Weather Statement | CTP | Clearfield | 31 min |
| Jul 8, 7:22 PM EDT | Areal Flood Advisory | CTP | Cumberland | 3 hr |
| Jul 8, 7:29 PM EDT | Special Weather Statement | CTP | Clinton | 46 min |
| Jul 8, 7:33 PM EDT | Special Weather Statement | CTP | Snyder | 42 min |
| Jul 8, 7:39 PM EDT | Special Weather Statement | CTP | Adams | 36 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2020Every flash flood warning in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.