Alert archive / Pennsylvania / Flash Flood Warnings in 2018

Flash Flood Warning 36, NWS State College, PA

August 3, 2018Lancaster County, Lebanon County, York County, Pennsylvania

NWS State College, PA issued this flash flood warning at Aug 3, 2018, 10:57 PM EDT for Lancaster County, Lebanon County, York County, Pennsylvania. It was in force for 3 hr. 3 reports 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
Aug 3, 2018, 10:57 PM EDT (02:57 UTC)
Expired
Aug 4, 2018, 2:00 AM EDT
In force
3 hr
Issued by
NWS State College, PA
Area
Storm-based polygon
Flood severity
None

Counties Lancaster County, PA, Lebanon County, PA, York County, PA

The radar

The Sterling radar (KLWX), 148 km from the middle of the area, began a volume at 02:57 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

TimeReportWhereRemark
Aug 4, 12:15 AM EDTHEAVY RAIN 3.11Landisville, PA
Aug 4, 12:21 AM EDTHEAVY RAIN 3.7Freysville, PABETWEEN 645PM AND MIDNIGHT
Aug 4, 1:50 AM EDTHEAVY RAIN 4.13Windsor, PASINCE 8 PM FRIDAY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 00:00Z, 3.0 hours before the alert went out and 146 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-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2018-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1063 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2018-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1063 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
575 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

003 
WGUS51 KCTP 040257
FFWCTP
PAC071-075-133-040600-
/O.NEW.KCTP.FF.W.0036.180804T0257Z-180804T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service State College PA
1057 PM EDT FRI AUG 3 2018

The National Weather Service in State College PA has issued a

* Flash Flood Warning for...
  Central Lancaster County in south central Pennsylvania...
  York County in south central Pennsylvania...
  Southeastern Lebanon County in south central Pennsylvania...

* Until 200 AM EDT.

* At 1052 PM EDT, Doppler radar and automated rain gauges indicated 
  heavy rain falling across the warned area. Between two and three 
  inches of rain have already fallen in some spots. An additional 
  one to two inches are expected in some locations between 11 PM and 
  1 AM, resulting in flash flooding. Numerous roads are already 
  flooded and several water rescues are underway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3981 7700 4011 7675 4017 7666 4019 7657
      4022 7658 4041 7631 4036 7623 4036 7620
      4025 7606 3972 7637 3972 7699

$$

KF

What 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 Aug 3, 9:10 PM EDT, 1 hour 47 minutes earlier.

Area forecast discussion, Aug 3, 9:10 PM EDT, 1 hour 47 minutes before
Area Forecast Discussion
National Weather Service State College PA
910 PM EDT Fri Aug 3 2018

.SYNOPSIS...
A plume of deep tropical moisture will continue to stream north
across the Commonwealth into early tonight bringing locally
heavy rain. A weak cold front will push east across Pennsylvania
later tonight and early Saturday, sweeping the moisture off the
Mid Atlantic Coast. High pressure building in will bring drier
but still humid weather and increasing sunshine throughout the
upcoming weekend.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
Focus for heavy rain and flooding will be over the southeast
corner of the forecast area overnight. Radar loop at 01Z is
showing and area of heavy rain falling at nose of low level jet
over southeast Pa. PWATS near 2 inches, combined with capes near
1000 j/kg, should support rates of over 1 inch an hour in spots
overnight. Latest HRRR runs support additional rainfall amounts
overnight of 2+ inches in some spots from Harrisburg south and
east.

Elsewhere, based on latest near term model runs and radar
trends, may be able to shave off the western edge of the flash
flood watch late this evening.

High pressure and associated drier air mass will build in from
the Grt Lks late tonight, bringing clearing skies and developing
valley fog to the western counties.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH SUNDAY/...
Low level jet and deepest moisture will have shifted east of the
region Saturday. However, passage of upper trough could support
a few lingering showers, primarily over the southeast counties
during the morning and during peak heating of the afternoon over
the Allegheny Plateau. For most of the region, arrival of high
pressure and lower PWATs will translate to fair and dry
conditions. The return of sunshine should allow temperatures to
recover to the 80s Saturday afternoon. Fair weather Sat night
with overnight lows from near 60 north to 70 south.

&&

.LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/...
The long term period returns with a ridge over the region that
will stifle any precipitation Sunday into Monday. This coupled
with a high over the south will bring warmer temperatures and an
increase of humidity into middle of the week. There is a chance
for POPS Monday afternoon but only slight as there is a lack of
instability. This will cease as a deepening trough approaches
through southern Canada and will trek through the upper Great
lakes and into the region Tuesday and Wednesday. This will bring
the next chance for showers/thunderstorms. An unsettled pattern
looks to be in store through the latter half of next week.
 Temperatures will rebound to be around normal through the
weekend and into next week.

&&

.AVIATION /01Z SATURDAY THROUGH WEDNESDAY/...
Rain activity continues to shift east, and is focusing more
across the middle and lower Susquehanna Valley at 00z.

Highly variable conditions are expected across the east, with
VFR/MVFR conditions punctuated with IFR in heavier rain. Thunder
has still been very limited across the area, but will continue
to include in KMDT and KLNS TAFs in response to HRRR continuing
to insist on blossoming convection between 00z and 08z.

As rain tapers off across the west, expect widespread fog
development, with IFR/LIFR conditions becoming prevalent across
much of the region.

For Saturday, expecting widespread morning fog, and some
lingering rain in the east, with improvements to VFR in all
areas by later morning into early afternoon.

.Outlook...

Sat...Morning fog/low clouds central and west in the AM.
Lingering rain and IFR restrictions in the east. Becoming VFR.

Sun...Patchy AM fog possible, otherwise VFR.

Mon...Mainly VFR, with isolated PM TSRA impacts possible
West.

Tue...Mainly VFR, with scattered PM TSRA impacts possible.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch until 8 AM EDT Saturday for PAZ028-036-042-
046-049>053-056>059-063>066.
Flash Flood Watch until 10 PM EDT this evening for PAZ012-018-
019-024>027-033>035-037-041-045.

&&

SYNOPSIS...Watson
NEAR TERM...Fitzgerald
SHORT TERM...Watson/Fitzgerald
LONG TERM...Lambert/Ceru
AVIATION...Jung
Hazardous weather outlook, Aug 3, 6:33 PM EDT, 4 hours 24 minutes before
Hazardous Weather Outlook
National Weather Service State College PA
633 PM EDT Fri Aug 3 2018

PAZ004>006-010-011-017-042245-
Warren-McKean-Potter-Elk-Cameron-Clearfield-
633 PM EDT Fri Aug 3 2018

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...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.

PAZ012-018-019-024>027-033>035-037-041-045-042245-
Northern Clinton-Northern Centre-Southern Centre-Cambria-Blair-
Huntingdon-Mifflin-Somerset-Bedford-Fulton-Tioga-Northern Lycoming-
Southern Clinton-
633 PM EDT Fri Aug 3 2018

...FLASH FLOOD WATCH IN EFFECT UNTIL 10 PM EDT THIS EVENING...

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.

   Flash Flood Watch.

.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.

PAZ028-036-042-046-049>053-056>059-063>066-042245-
Juniata-Franklin-Sullivan-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-
Adams-York-Lancaster-
633 PM EDT Fri Aug 3 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH SATURDAY MORNING...

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.

   Flash Flood Watch.

In addition, strong to severe thunderstorms with gusty winds are
possible in a few spots this evening.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Aug 3, 5:15 PM EDT, 5 hours 42 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE STATE COLLEGE PA
515 PM EDT FRI AUG 03 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 AM     FLASH FLOOD      ALTOONA                 40.51N  78.40W
08/03/2018                   BLAIR              PA   TRAINED SPOTTER

            WATER FLOWING INTO HOUSES AND ACROSS ROADS BETWEEN 13TH
            AND 15TH STREETS IN ALTOONA. ROADS INCLUDE PLEASANT
            VALLEY BLVD AND ADAMS AVENUE ALONG BRUSH RUN.

1029 AM     FLASH FLOOD      DUSHORE                 41.53N  76.40W
08/03/2018                   SULLIVAN           PA   PEMA

            NUMEROUS REPORTS OF WATER AND DEBRIS ACROSS ROADWAYS
            INCLUDING JULIA STREET, WORLDS END ROAD IN FORKS
            TOWNSHIP, AND ROUTE 220 IN DUSHORE BOROUGH.

1101 AM     FLASH FLOOD      1 ENE WADDLE            40.84N  77.92W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ON BUFFALO RUN RD

1109 AM     FLASH FLOOD      BARBOURS                41.40N  76.78W
08/03/2018                   LYCOMING           PA   911 CALL CENTER

            LOWER BARBOURS RD CLOSED ALONG THE LOYALSCOCK CREEK.
            MANY ADDITIONAL ROADS CLOSED ALONG LOYALSOCK CREEK INTO
            SULLIVAN COUNTY.

1112 AM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS ROADS CLOSED IN THE STATE COLLEGE AREA
            INCLUDING ROCK ROAD, BENNER PIKE BY SHEETZ, AND E
            COLLEGE AVENUE BY YBC.

1200 PM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            ROADWAY FLOODED AT FOX HOLLOW RD NEAR TOFTREES.

0114 PM     FLASH FLOOD      MILESBURG               40.94N  77.79W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS SIDE STREETS FLOODED IN MILESBURG

0115 PM     FLASH FLOOD      PORT MATILDA            40.80N  78.05W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ACROSS ROADWAY ON SOUTH EAGLE VALLEY RD

0445 PM     FLOOD            MILL HALL               41.10N  77.49W
08/03/2018                   CLINTON            PA   911 CALL CENTER

            APPROXIMATELY 20 ROAD CLOSURES ALONG THE ROUTE 150
            CORRIDOR IN SOUTHERN CLINTON COUNTY. SOME ROADS IMPACTED
            INCLUDE ROUTE 150, BALD EAGLE MOUNTAIN ROAD, KEYSTONE
            CENTRAL ROAD AND SUGAR RUN ROAD.

&&

EVENT NUMBER CTP1802075 CTP1802074 CTP1802083 CTP1802076 CTP1802077
CTP1802082 CTP1802081 CTP1802080 CTP1802087

EVANEGO
Local storm report, Aug 3, 8:26 PM EDT, 2 hours 31 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE STATE COLLEGE PA
826 PM EDT FRI AUG 03 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 AM     FLASH FLOOD      ALTOONA                 40.51N  78.40W
08/03/2018                   BLAIR              PA   TRAINED SPOTTER

            WATER FLOWING INTO HOUSES AND ACROSS ROADS BETWEEN 13TH
            AND 15TH STREETS IN ALTOONA. ROADS INCLUDE PLEASANT
            VALLEY BLVD AND ADAMS AVENUE ALONG BRUSH RUN.

1029 AM     FLASH FLOOD      DUSHORE                 41.53N  76.40W
08/03/2018                   SULLIVAN           PA   PEMA

            NUMEROUS REPORTS OF WATER AND DEBRIS ACROSS ROADWAYS
            INCLUDING JULIA STREET, WORLDS END ROAD IN FORKS
            TOWNSHIP, AND ROUTE 220 IN DUSHORE BOROUGH.

1101 AM     FLASH FLOOD      1 ENE WADDLE            40.84N  77.92W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ON BUFFALO RUN RD

1109 AM     FLASH FLOOD      BARBOURS                41.40N  76.78W
08/03/2018                   LYCOMING           PA   911 CALL CENTER

            LOWER BARBOURS RD CLOSED ALONG THE LOYALSCOCK CREEK.
            MANY ADDITIONAL ROADS CLOSED ALONG LOYALSOCK CREEK INTO
            SULLIVAN COUNTY.

1112 AM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS ROADS CLOSED IN THE STATE COLLEGE AREA
            INCLUDING ROCK ROAD, BENNER PIKE BY SHEETZ, AND E
            COLLEGE AVENUE BY YBC.

1200 PM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            ROADWAY FLOODED AT FOX HOLLOW RD NEAR TOFTREES.

0114 PM     FLASH FLOOD      MILESBURG               40.94N  77.79W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS SIDE STREETS FLOODED IN MILESBURG

0115 PM     FLASH FLOOD      PORT MATILDA            40.80N  78.05W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ACROSS ROADWAY ON SOUTH EAGLE VALLEY RD

0445 PM     FLOOD            MILL HALL               41.10N  77.49W
08/03/2018                   CLINTON            PA   911 CALL CENTER

            APPROXIMATELY 20 ROAD CLOSURES ALONG THE ROUTE 150
            CORRIDOR IN SOUTHERN CLINTON COUNTY. SOME ROADS IMPACTED
            INCLUDE ROUTE 150, BALD EAGLE MOUNTAIN ROAD, KEYSTONE
            CENTRAL ROAD AND SUGAR RUN ROAD.

0820 PM     FLOOD            SALUNGA                 40.10N  76.42W
08/03/2018                   LANCASTER          PA   FIRE DEPT/RESCUE

            SEVERAL ROADS EXPERIENCING ISSUES WITH HIGH WATER IN
            EAST HEMPFIELD, WEST HEMPFIELD AND RAPHO TOWNSHIPS.

&&

EVENT NUMBER CTP1802075 CTP1802074 CTP1802083 CTP1802076 CTP1802077
CTP1802082 CTP1802081 CTP1802080 CTP1802087 CTP1802088

EVANEGO
Local storm report, Aug 3, 9:16 PM EDT, 1 hour 41 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE STATE COLLEGE PA
916 PM EDT FRI AUG 03 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 AM     FLASH FLOOD      ALTOONA                 40.51N  78.40W
08/03/2018                   BLAIR              PA   TRAINED SPOTTER

            WATER FLOWING INTO HOUSES AND ACROSS ROADS BETWEEN 13TH
            AND 15TH STREETS IN ALTOONA. ROADS INCLUDE PLEASANT
            VALLEY BLVD AND ADAMS AVENUE ALONG BRUSH RUN.

1029 AM     FLASH FLOOD      DUSHORE                 41.53N  76.40W
08/03/2018                   SULLIVAN           PA   PEMA

            NUMEROUS REPORTS OF WATER AND DEBRIS ACROSS ROADWAYS
            INCLUDING JULIA STREET, WORLDS END ROAD IN FORKS
            TOWNSHIP, AND ROUTE 220 IN DUSHORE BOROUGH.

1101 AM     FLASH FLOOD      1 ENE WADDLE            40.84N  77.92W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ON BUFFALO RUN RD

1109 AM     FLASH FLOOD      BARBOURS                41.40N  76.78W
08/03/2018                   LYCOMING           PA   911 CALL CENTER

            LOWER BARBOURS RD CLOSED ALONG THE LOYALSCOCK CREEK.
            MANY ADDITIONAL ROADS CLOSED ALONG LOYALSOCK CREEK INTO
            SULLIVAN COUNTY.

1112 AM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS ROADS CLOSED IN THE STATE COLLEGE AREA
            INCLUDING ROCK ROAD, BENNER PIKE BY SHEETZ, AND E
            COLLEGE AVENUE BY YBC.

1200 PM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            ROADWAY FLOODED AT FOX HOLLOW RD NEAR TOFTREES.

0114 PM     FLASH FLOOD      MILESBURG               40.94N  77.79W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS SIDE STREETS FLOODED IN MILESBURG

0115 PM     FLASH FLOOD      PORT MATILDA            40.80N  78.05W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ACROSS ROADWAY ON SOUTH EAGLE VALLEY RD

0445 PM     FLOOD            MILL HALL               41.10N  77.49W
08/03/2018                   CLINTON            PA   911 CALL CENTER

            APPROXIMATELY 20 ROAD CLOSURES ALONG THE ROUTE 150
            CORRIDOR IN SOUTHERN CLINTON COUNTY. SOME ROADS IMPACTED
            INCLUDE ROUTE 150, BALD EAGLE MOUNTAIN ROAD, KEYSTONE
            CENTRAL ROAD AND SUGAR RUN ROAD.

0820 PM     FLOOD            SALUNGA                 40.10N  76.42W
08/03/2018                   LANCASTER          PA   FIRE DEPT/RESCUE

            SEVERAL ROADS EXPERIENCING ISSUES WITH HIGH WATER IN
            EAST HEMPFIELD, WEST HEMPFIELD AND RAPHO TOWNSHIPS.

0905 PM     FLASH FLOOD      1 NW DALLASTOWN         39.91N  76.65W
08/03/2018                   YORK               PA   FIRE DEPT/RESCUE

            WATER RESCUE ON CAMP BETTY WASHINGTON ROAD IN YORK
            TOWNSHIP.

&&

EVENT NUMBER CTP1802075 CTP1802074 CTP1802083 CTP1802076 CTP1802077
CTP1802082 CTP1802081 CTP1802080 CTP1802087 CTP1802088 CTP1802089

EVANEGO
Local storm report, Aug 3, 9:24 PM EDT, 1 hour 33 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE STATE COLLEGE PA
924 PM EDT FRI AUG 03 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 AM     FLASH FLOOD      ALTOONA                 40.51N  78.40W
08/03/2018                   BLAIR              PA   TRAINED SPOTTER

            WATER FLOWING INTO HOUSES AND ACROSS ROADS BETWEEN 13TH
            AND 15TH STREETS IN ALTOONA. ROADS INCLUDE PLEASANT
            VALLEY BLVD AND ADAMS AVENUE ALONG BRUSH RUN.

1029 AM     FLASH FLOOD      DUSHORE                 41.53N  76.40W
08/03/2018                   SULLIVAN           PA   PEMA

            NUMEROUS REPORTS OF WATER AND DEBRIS ACROSS ROADWAYS
            INCLUDING JULIA STREET, WORLDS END ROAD IN FORKS
            TOWNSHIP, AND ROUTE 220 IN DUSHORE BOROUGH.

1101 AM     FLASH FLOOD      1 ENE WADDLE            40.84N  77.92W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ON BUFFALO RUN RD

1109 AM     FLASH FLOOD      BARBOURS                41.40N  76.78W
08/03/2018                   LYCOMING           PA   911 CALL CENTER

            LOWER BARBOURS RD CLOSED ALONG THE LOYALSCOCK CREEK.
            MANY ADDITIONAL ROADS CLOSED ALONG LOYALSOCK CREEK INTO
            SULLIVAN COUNTY.

1112 AM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS ROADS CLOSED IN THE STATE COLLEGE AREA
            INCLUDING ROCK ROAD, BENNER PIKE BY SHEETZ, AND E
            COLLEGE AVENUE BY YBC.

1200 PM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            ROADWAY FLOODED AT FOX HOLLOW RD NEAR TOFTREES.

0114 PM     FLASH FLOOD      MILESBURG               40.94N  77.79W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS SIDE STREETS FLOODED IN MILESBURG

0115 PM     FLASH FLOOD      PORT MATILDA            40.80N  78.05W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ACROSS ROADWAY ON SOUTH EAGLE VALLEY RD

0445 PM     FLOOD            MILL HALL               41.10N  77.49W
08/03/2018                   CLINTON            PA   911 CALL CENTER

            APPROXIMATELY 20 ROAD CLOSURES ALONG THE ROUTE 150
            CORRIDOR IN SOUTHERN CLINTON COUNTY. SOME ROADS IMPACTED
            INCLUDE ROUTE 150, BALD EAGLE MOUNTAIN ROAD, KEYSTONE
            CENTRAL ROAD AND SUGAR RUN ROAD.

0820 PM     FLOOD            SALUNGA                 40.10N  76.42W
08/03/2018                   LANCASTER          PA   FIRE DEPT/RESCUE

            SEVERAL ROADS EXPERIENCING ISSUES WITH HIGH WATER IN
            EAST HEMPFIELD, WEST HEMPFIELD AND RAPHO TOWNSHIPS.

0905 PM     FLASH FLOOD      1 NW DALLASTOWN         39.91N  76.65W
08/03/2018                   YORK               PA   FIRE DEPT/RESCUE

            WATER RESCUE ON CAMP BETTY WASHINGTON ROAD IN YORK
            TOWNSHIP.

0918 PM     FLASH FLOOD      1 NW DALLASTOWN         39.91N  76.65W
08/03/2018                   YORK               PA   FIRE DEPT/RESCUE

            DISABLED VEHICLES IN HIGH WATER ON SPRINGWOOD ROAD
            BETWEEN CAMP BETTY WASHINGTON ROAD AND CHAPEL CHURCH
            ROAD. A PORTION OF SPRINGWOOD ROAD MAY BE WASHED OUT.

&&

EVENT NUMBER CTP1802075 CTP1802074 CTP1802083 CTP1802076 CTP1802077
CTP1802082 CTP1802081 CTP1802080 CTP1802087 CTP1802088 CTP1802089
CTP1802090

EVANEGO
Local storm report, Aug 3, 10:03 PM EDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1003 PM EDT FRI AUG 03 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 AM     FLASH FLOOD      ALTOONA                 40.51N  78.40W
08/03/2018                   BLAIR              PA   TRAINED SPOTTER

            WATER FLOWING INTO HOUSES AND ACROSS ROADS BETWEEN 13TH
            AND 15TH STREETS IN ALTOONA. ROADS INCLUDE PLEASANT
            VALLEY BLVD AND ADAMS AVENUE ALONG BRUSH RUN.

1029 AM     FLASH FLOOD      DUSHORE                 41.53N  76.40W
08/03/2018                   SULLIVAN           PA   PEMA

            NUMEROUS REPORTS OF WATER AND DEBRIS ACROSS ROADWAYS
            INCLUDING JULIA STREET, WORLDS END ROAD IN FORKS
            TOWNSHIP, AND ROUTE 220 IN DUSHORE BOROUGH.

1101 AM     FLASH FLOOD      1 ENE WADDLE            40.84N  77.92W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ON BUFFALO RUN RD

1109 AM     FLASH FLOOD      BARBOURS                41.40N  76.78W
08/03/2018                   LYCOMING           PA   911 CALL CENTER

            LOWER BARBOURS RD CLOSED ALONG THE LOYALSCOCK CREEK.
            MANY ADDITIONAL ROADS CLOSED ALONG LOYALSOCK CREEK INTO
            SULLIVAN COUNTY.

1112 AM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS ROADS CLOSED IN THE STATE COLLEGE AREA
            INCLUDING ROCK ROAD, BENNER PIKE BY SHEETZ, AND E
            COLLEGE AVENUE BY YBC.

1200 PM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            ROADWAY FLOODED AT FOX HOLLOW RD NEAR TOFTREES.

0114 PM     FLASH FLOOD      MILESBURG               40.94N  77.79W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS SIDE STREETS FLOODED IN MILESBURG

0115 PM     FLASH FLOOD      PORT MATILDA            40.80N  78.05W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ACROSS ROADWAY ON SOUTH EAGLE VALLEY RD

0445 PM     FLOOD            MILL HALL               41.10N  77.49W
08/03/2018                   CLINTON            PA   911 CALL CENTER

            APPROXIMATELY 20 ROAD CLOSURES ALONG THE ROUTE 150
            CORRIDOR IN SOUTHERN CLINTON COUNTY. SOME ROADS IMPACTED
            INCLUDE ROUTE 150, BALD EAGLE MOUNTAIN ROAD, KEYSTONE
            CENTRAL ROAD AND SUGAR RUN ROAD.

0820 PM     FLOOD            SALUNGA                 40.10N  76.42W
08/03/2018                   LANCASTER          PA   FIRE DEPT/RESCUE

            SEVERAL ROADS EXPERIENCING ISSUES WITH HIGH WATER IN
            EAST HEMPFIELD, WEST HEMPFIELD AND RAPHO TOWNSHIPS.

0905 PM     FLASH FLOOD      1 NW DALLASTOWN         39.91N  76.65W
08/03/2018                   YORK               PA   FIRE DEPT/RESCUE

            WATER RESCUE ON CAMP BETTY WASHINGTON ROAD IN YORK
            TOWNSHIP.

0918 PM     FLASH FLOOD      1 NW DALLASTOWN         39.91N  76.65W
08/03/2018                   YORK               PA   FIRE DEPT/RESCUE

            DISABLED VEHICLES IN HIGH WATER ON SPRINGWOOD ROAD
            BETWEEN CAMP BETTY WASHINGTON ROAD AND CHAPEL CHURCH
            ROAD. A PORTION OF SPRINGWOOD ROAD MAY BE WASHED OUT.

0921 PM     FLASH FLOOD      1 WSW HALLAM            40.00N  76.62W
08/03/2018                   YORK               PA   FIRE DEPT/RESCUE

            WATER RESCUE ON FRYSVILLE ROAD NEAR THE PRINCE MOBILE
            HOME PARK.

&&

EVENT NUMBER CTP1802075 CTP1802074 CTP1802083 CTP1802076 CTP1802077
CTP1802082 CTP1802081 CTP1802080 CTP1802087 CTP1802088 CTP1802089
CTP1802090 CTP1802091

EVANEGO
Local storm report, Aug 3, 10:56 PM EDT, 1 minute before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1056 PM EDT FRI AUG 03 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 AM     FLASH FLOOD      ALTOONA                 40.51N  78.40W
08/03/2018                   BLAIR              PA   TRAINED SPOTTER

            WATER FLOWING INTO HOUSES AND ACROSS ROADS BETWEEN 13TH
            AND 15TH STREETS IN ALTOONA. ROADS INCLUDE PLEASANT
            VALLEY BLVD AND ADAMS AVENUE ALONG BRUSH RUN.

1029 AM     FLASH FLOOD      DUSHORE                 41.53N  76.40W
08/03/2018                   SULLIVAN           PA   PEMA

            NUMEROUS REPORTS OF WATER AND DEBRIS ACROSS ROADWAYS
            INCLUDING JULIA STREET, WORLDS END ROAD IN FORKS
            TOWNSHIP, AND ROUTE 220 IN DUSHORE BOROUGH.

1101 AM     FLASH FLOOD      1 ENE WADDLE            40.84N  77.92W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ON BUFFALO RUN RD

1109 AM     FLASH FLOOD      BARBOURS                41.40N  76.78W
08/03/2018                   LYCOMING           PA   911 CALL CENTER

            LOWER BARBOURS RD CLOSED ALONG THE LOYALSCOCK CREEK.
            MANY ADDITIONAL ROADS CLOSED ALONG LOYALSOCK CREEK INTO
            SULLIVAN COUNTY.

1112 AM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS ROADS CLOSED IN THE STATE COLLEGE AREA
            INCLUDING ROCK ROAD, BENNER PIKE BY SHEETZ, AND E
            COLLEGE AVENUE BY YBC.

1200 PM     FLASH FLOOD      STATE COLLEGE           40.79N  77.86W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            ROADWAY FLOODED AT FOX HOLLOW RD NEAR TOFTREES.

0114 PM     FLASH FLOOD      MILESBURG               40.94N  77.79W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            NUMEROUS SIDE STREETS FLOODED IN MILESBURG

0115 PM     FLASH FLOOD      PORT MATILDA            40.80N  78.05W
08/03/2018                   CENTRE             PA   911 CALL CENTER

            FLOODING ACROSS ROADWAY ON SOUTH EAGLE VALLEY RD

0445 PM     FLOOD            MILL HALL               41.10N  77.49W
08/03/2018                   CLINTON            PA   911 CALL CENTER

            APPROXIMATELY 20 ROAD CLOSURES ALONG THE ROUTE 150
            CORRIDOR IN SOUTHERN CLINTON COUNTY. SOME ROADS IMPACTED
            INCLUDE ROUTE 150, BALD EAGLE MOUNTAIN ROAD, KEYSTONE
            CENTRAL ROAD AND SUGAR RUN ROAD.

0820 PM     FLOOD            SALUNGA                 40.10N  76.42W
08/03/2018                   LANCASTER          PA   FIRE DEPT/RESCUE

            SEVERAL ROADS EXPERIENCING ISSUES WITH HIGH WATER IN
            EAST HEMPFIELD, WEST HEMPFIELD AND RAPHO TOWNSHIPS.

0905 PM     FLASH FLOOD      1 NW DALLASTOWN         39.91N  76.65W
08/03/2018                   YORK               PA   FIRE DEPT/RESCUE

            WATER RESCUE ON CAMP BETTY WASHINGTON ROAD IN YORK
            TOWNSHIP.

0918 PM     FLASH FLOOD      1 NW DALLASTOWN         39.91N  76.65W
08/03/2018                   YORK               PA   FIRE DEPT/RESCUE

            DISABLED VEHICLES IN HIGH WATER ON SPRINGWOOD ROAD
            BETWEEN CAMP BETTY WASHINGTON ROAD AND CHAPEL CHURCH
            ROAD. A PORTION OF SPRINGWOOD ROAD MAY BE WASHED OUT.

0921 PM     FLASH FLOOD      1 WSW HALLAM            40.00N  76.62W
08/03/2018                   YORK               PA   FIRE DEPT/RESCUE

            WATER RESCUE ON FRYSVILLE ROAD NEAR THE PRINCE MOBILE
            HOME PARK.

1042 PM     FLASH FLOOD      REINHOLDS               40.27N  76.12W
08/03/2018                   LANCASTER          PA   FIRE DEPT/RESCUE

            WATER RESCUE ON CREAMERY ROAD AT THE RAILROAD TRACKS IN
            WEST COCALICO TOWNSHIP.

&&

EVENT NUMBER CTP1802075 CTP1802074 CTP1802083 CTP1802076 CTP1802077
CTP1802082 CTP1802081 CTP1802080 CTP1802087 CTP1802088 CTP1802089
CTP1802090 CTP1802091 CTP1802095

EVANEGO

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 8:08 PM EDTFlash Flood WarningCTPLancaster, York3 hr
Aug 3, 9:33 PM EDTAreal Flood AdvisoryCTPLebanon117 min
Aug 3, 9:49 PM EDTAreal Flood AdvisoryCTPClinton3 hr
Aug 3, 10:30 PM EDTAreal Flood AdvisoryCTPAdams, Dauphin, Lancaster, Lebanon, York60 min
Aug 3, 11:28 PM EDTAreal Flood AdvisoryCTPAdams, Cumberland, Dauphin, Lebanon, York3 hr
Aug 4, 12:27 AM EDTAreal Flood AdvisoryCTPSchuylkill2 hr
Aug 4, 1:36 AM EDTRiver Flood WarningCTPLancaster, York27 hr
Aug 4, 1:56 AM EDTFlash Flood WarningCTPLancaster, Lebanon, York5 hr
Aug 4, 2:59 AM EDTDense Fog AdvisoryCTPBedford, Blair, Cambria, Cameron, Centre, Clearfield and 12 more6 hr
Aug 4, 6:44 AM EDTAreal Flood WarningCTPLancaster, Lebanon, York9 hr
Aug 4, 11:12 AM EDTRiver Flood WarningCTPLebanon, Schuylkill9 hr
Aug 4, 3:41 PM EDTAreal Flood WarningCTPLancaster6 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2018Every flash flood warning in 2018

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.