Alert archive / Pennsylvania / Flash Flood Warnings in 2017
Flash Flood Warning 33, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Jun 23, 2017, 4:27 PM EDT for Fayette County, Greene County, Pennsylvania. It was in force for 8 hr. 7 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
- Jun 23, 2017, 4:27 PM EDT (20:27 UTC)
- Expired
- Jun 24, 2017, 12:30 AM EDT
- In force
- 8 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Fayette County, PA, Greene County, PA
The radar
The Pittsburgh radar (KPBZ), 73 km from the middle of the area, began a volume at 20:29 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 |
|---|---|---|---|
| Jun 23, 5:50 PM EDT | FLASH FLOOD | 5 Nw Fairdale, PA | ROADS CLOSED DUE TO HIGH WATER |
| Jun 23, 5:55 PM EDT | FLASH FLOOD | 1 Nnw Fairdale, PA | ROADS CLOSED DUE TO HIGH WATER |
| Jun 23, 6:45 PM EDT | FLASH FLOOD | 1 Ne Hogsett, PA | NATIONAL PIKE ROAD UNDER WATER |
| Jun 23, 7:25 PM EDT | FLASH FLOOD | Fairbank, PA | BOATS ARE BEING SENT TO THE SCENE TO EVACUATE RESIDENTS |
| Jun 23, 7:25 PM EDT | FLASH FLOOD | New Salem, PA | HOMES FLOODED ON FILBERT ORIENT RD. |
| Jun 23, 7:32 PM EDT | FLASH FLOOD | Waynesburg, PA | THREE FEET OF WATER ON OAK FOREST RD. |
| Jun 23, 7:34 PM EDT | FLASH FLOOD | Waynesburg, PA | CONSTRUCTION TRAILER AT WEST GREENE HIGH SCHOOL WASHED DOWN THE CREEK UNDER A RAILROAD TRESSEL |
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 7 storm reports to this flash flood warning; the first came 83 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
Pittsburgh, PA (KAGC), launched 12:00Z, 8.5 hours before the alert went out and 56 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
- 36 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 520 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 263 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
045
WGUS51 KPBZ 232027
FFWPBZ
PAC051-059-240030-
/O.NEW.KPBZ.FF.W.0033.170623T2027Z-170624T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
427 PM EDT FRI JUN 23 2017
The National Weather Service in Pittsburgh has issued a
* Flash Flood Warning for...
Southeastern Greene County in southwestern Pennsylvania...
Central Fayette County in southwestern Pennsylvania...
* Until 830 PM EDT.
* At 426 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. One to three inches of rain
have fallen. Flash flooding is expected to begin shortly.
* Some locations that will experience flooding include...
Uniontown, Connellsville, Waynesburg, Masontown, South
Connellsville, Fairdale, Jefferson Boro, Isabella, Dunbar,
Rogersville, Everson and Republic.
Additional rainfall amounts up to two inches are possible in the
warned area through midnight.
This includes Interstate 79 in Pennsylvania between mile markers 4
and 15.
Please report flooding by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4000 7935 3972 8024 3972 8042 3983 8045
4009 7961 4008 7959 4009 7959 4012 7950
$$2 follow-up statements
316
WGUS71 KPBZ 232223
FFSPBZ
Flash Flood Statement
National Weather Service Pittsburgh PA
623 PM EDT FRI JUN 23 2017
PAC051-059-240030-
/O.CON.KPBZ.FF.W.0033.000000T0000Z-170624T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene PA-Fayette PA-
623 PM EDT FRI JUN 23 2017
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR
SOUTHEASTERN GREENE AND CENTRAL FAYETTE COUNTIES...
At 620 PM EDT, local law enforcement reported flash flooding
throughout the warning area. Up to three inches of rain have fallen.
Some locations that will experience flooding include...
Uniontown, Connellsville, Waynesburg, Masontown, South Connellsville,
Fairdale, Jefferson Boro, Isabella, Dunbar, Rogersville, Everson and
Republic.
Additional rainfall amounts up to two inches are possible in the
warned area.
This includes Interstate 79 in Pennsylvania between mile markers 4
and 15.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4000 7935 3972 8024 3972 8042 3983 8045
4009 7961 4008 7959 4009 7959 4012 7950
$$175
WGUS51 KPBZ 240010
FFWPBZ
PAC051-059-240430-
/O.EXT.KPBZ.FF.W.0033.000000T0000Z-170624T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
810 PM EDT FRI JUN 23 2017
The National Weather Service in Pittsburgh has extended the
* Flash Flood Warning for...
Southeastern Greene County in southwestern Pennsylvania...
Central Fayette County in southwestern Pennsylvania...
* Until 1230 AM EDT.
* At 806 PM EDT, local law enforcement officials continue to report
flooding across the warned area. Up to three inches of rain have
already fallen, with additional rainfall amounts up to two inches
possible through Saturday morning.
* Some locations that will experience flooding include...
Uniontown, Connellsville, Waynesburg, Masontown, South
Connellsville, Fairdale, Jefferson Boro, Isabella, Dunbar,
Rogersville, Everson and Republic.
This includes Interstate 79 in Pennsylvania between mile markers 4
and 15.
Please report flooding by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4000 7935 3972 8024 3972 8042 3983 8045
4009 7961 4008 7959 4009 7959 4012 7950
$$
33What 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 Pittsburgh, PA wrote its last area forecast discussion before this flash flood warning went out at Jun 23, 1:39 PM EDT, 2 hours 48 minutes earlier.
Area forecast discussion, Jun 23, 1:39 PM EDT, 2 hours 48 minutes before
Area Forecast Discussion
National Weather Service Pittsburgh PA
139 PM EDT Fri Jun 23 2017
.SYNOPSIS...
Downpours are possible through tonight with a tropical airmass
in place. A cold front sweeping through early Saturday will
return comfortable humidity levels by the weekend. Below normal
temperatures greet us early next week.
&&
.NEAR TERM /THROUGH TONIGHT/...
Widespread area of rain continues to impact the northern part
of the forecast area. The forecast has not changed much with
the 12Z NCEP suite. Heaviest rain axis has shifted slightly
north into southwestern PA mostly along and south of US 40 where
potentially upwards of 3.5" of rain could fall. The remaining
part of the hydro discussion including rivers can be found in
the hydro section near the end of this product.
Severe threat remains a concern as a dry slot is working its
way up the Ohio river into parts of southeastern Ohio and
northern West Virginia. This will allow the atmosphere to
destabilize and potentially foster development of bowing
segments that are capable of producing damaging winds. Forecast
soundings illustrate wind as the primary threat. Hodographs are
not too impressive given mostly speed shear, however if a storm
deviates to become a right mover then a weak tornado is
possible. Reviewing CIPS analogs for this scenario, they portray
a non zero tornado threat due to several of the top analogs
showing 1-2 tornadoes happened. This is further supported by
updraft helicity fields from experimental NCAR 3km CAM. At this
time, any severe weather should be along and south of the
clearing that will be working into northern WV and southern PA.
Pops will be categorical most of the night as a slug of rain
moves through. Very little change to the grids other than to
speed up timing of the back edge.
&&
.SHORT TERM /SATURDAY THROUGH MONDAY NIGHT/...
Dry and less humid air will be welcome news for many this
weekend as dewpoints drop into the 50s! Northwest winds behind
the baroclinic zone will clear out the sky during the morning,
however moisture will be on the increase as a fast moving
shortwave trough crosses during the evening hours. The column is
fairly dry, so no measurable QPF is foreseen Saturday. Dry
weather continues for the second half of the weekend despite
less sunshine. Yet another passing short wave will bring clouds
and given its stronger than the one Saturday isolated showers
are possible north of the I-76 corridor in the late afternoon /
early evening hours Sunday.
Mid level heights continue to fall as we kick off a new work
week. Most of the energy will reside along the lakes, so precip
chances are small over northern WV and western MD when compared
to northwest PA. Any shower will be brief. The bigger story is
the spring like feel as daytime high temps do not leave the 60s
Monday! This will be almost 15 degrees below normal.
&&
.LONG TERM /TUESDAY THROUGH FRIDAY/...
Highlights:
- Cool start - warm end temp wise
- Unsettled weather returns Friday
- No heat waves or high water threat
Mid level heights increase with a ridge building into the
eastern United States. This will bring temps back to normal
levels by Thursday and above normal by a week from now.
&&
.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
Tropical moisture will continue to stream northward ahead of an
approaching cold front this afternoon. Interaction with the
aforementioned front and digging shortwave will support periods
of rain and an increasing chance for thunderstorms through the
afternoon. Confidence in widespread MVFR and brief IFR
visibility restrictions is high for the remainder of the day in
periods of heavy rain, with the expectation that IFR cigs will
lift over most terminals this afternoon. Some thunderstorms may
be severe, with strengthening shear/jet support, which could
result in strong/severe gusts at terminals this afternoon.
Restrictions will likely continue tonight as the remnants of
Cindy pass along the PA/WV border. Cigs may fall back to IFR
after sunset with some fog possible with saturated conditions.
But, improvement is expected by Saturday morning as surface
ridging builds overhead.
WSW wind will remain gusty through the afternoon and again
tomorrow.
.OUTLOOK...
Upper trough may bring occasional restrictions Sun and Mon in
afternoon showers/storms.
&&
.HYDROLOGY...
The flash flood watch remains on track. The axis of highest QPF
has shifted a little north to far southern PA where 24 hour
amounts in excess of three inches are possible. HRRR shows a
several hour period of moderate to heavy rainfall thankfully it
is across a region that was not impacted by the nearly 4-6" of
rain that fell in parts of Indiana county last evening.
Warm rain process and PRE setup remain in place. PWATS are
pushing two inches while warm cloud depths are in excess of
13kft. The low level jet continues to pump moisture from Cindy
into our region. All of these point to enhanced convergence
ahead of the front.
River forecasts have been tweaked upward across Mon and
headwaters of Ohio river. We still do not have any forecast
points going to flood, but Pittsburgh, Elizabeth, and Charleroi
are predicted to reach action stage.
&&
.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...Flash Flood Watch through late tonight for MDZ001.
OH...Flash Flood Watch through late tonight for OHZ057>059-068-069.
PA...Flash Flood Watch through late tonight for PAZ021>023-029-031-
073>076.
WV...Flash Flood Watch through late tonight for WVZ002>004-012-021-
509>514.
&&Hazardous weather outlook, Jun 23, 3:46 AM EDT, 12 hours 41 minutes before
Hazardous Weather Outlook National Weather Service Pittsburgh PA 346 AM EDT Fri Jun 23 2017 MDZ001-OHZ057>059-068-069-PAZ021>023-029-031-073>076-WVZ002>004-012- 021-509>514-240800- Garrett-Muskingum-Guernsey-Belmont-Noble-Monroe-Allegheny-Armstrong- Indiana-Washington-Greene-Westmoreland-Westmoreland Ridges-Fayette- Fayette Ridges-Brooke-Ohio-Marshall-Wetzel-Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston-Preston- Eastern Preston-Western Tucker-Eastern Tucker- 346 AM EDT Fri Jun 23 2017 ...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... This Hazardous Weather Outlook is for western Maryland, east central Ohio, southwest Pennsylvania, west central Pennsylvania, northern West Virginia and northern panhandle of West Virginia. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. In addition to the Flash Flood Watch, isolated strong to severe thunderstorms are possible with damaging wind the primary threat. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. OHZ039>041-048>050-PAZ007>009-013>016-020-WVZ001-240800- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson-Mercer- Venango-Forest-Lawrence-Butler-Clarion-Beaver-Hancock- 346 AM EDT Fri Jun 23 2017 This Hazardous Weather Outlook is for east central Ohio, northwest Pennsylvania, west central Pennsylvania, western Pennsylvania and northern West Virginia. .DAY ONE...Today and Tonight. Showers and thunderstorms are expected today and tonight. Isolated strong to severe thunderstorms are possible today with damaging wind and heavy rainfall the primary threats. Heavy rainfall could cause local high water problems. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.
In the hours before
Local storm report, Jun 23, 3:19 PM EDT, 1 hour 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
319 PM EDT FRI JUN 23 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0314 PM FLASH FLOOD 6 N CLAYSVILLE 40.21N 80.41W
06/23/2017 WASHINGTON PA TRAINED SPOTTER
DUTCH FORK CREEK OUT OF BANK AND ROAD IS FLOODED
&&
EVENT NUMBER PBZ1701658
RCCSpecial weather statement, Jun 23, 3:29 PM EDT, 58 minutes before
Special Weather Statement National Weather Service Pittsburgh PA 329 PM EDT FRI JUN 23 2017 PAZ031-075-232000- Greene-Fayette- 329 PM EDT FRI JUN 23 2017 ...A STRONG THUNDERSTORM CAPABLE OF PRODUCING GUSTY WIND WILL AFFECT EAST CENTRAL GREENE AND WEST CENTRAL FAYETTE COUNTIES... At 329 PM EDT, a strong thunderstorm was located near Waynesburg, moving east at 35 mph. Wind gusts up to 55 mph are possible with this storm. Locations impacted include... Masontown... Brownsville... Jefferson Boro... Fairdale... Isabella... Nemacolin... Republic... Carmichaels... Rices Landing... New Salem... Grindstone... This includes Interstate 79 in Pennsylvania between mile markers 8 and 14. LAT...LON 3981 8019 3987 8023 4004 7984 3986 7976 TIME...MOT...LOC 1929Z 247DEG 32KT 3986 8016 34
Local storm report, Jun 23, 3:45 PM EDT, 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
345 PM EDT FRI JUN 23 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0320 PM TSTM WND DMG 1 NW SOUTH STRABANE 40.15N 80.18W
06/23/2017 WASHINGTON PA EMERGENCY MNGR
MULTIPLE TREES DOWN AND STRUCTURAL COLLAPSE IN AMWELL
TWP
&&
EVENT NUMBER PBZ1701659
FRIESLocal storm report, Jun 23, 3:59 PM EDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
359 PM EDT FRI JUN 23 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0358 PM FLASH FLOOD BROOKLINE 40.39N 80.02W
06/23/2017 ALLEGHENY PA TRAINED SPOTTER
NOBLES LANE AND STATE ROUTE 51 HIGH WATER
&&
EVENT NUMBER PBZ1701660
98Local storm report, Jun 23, 4:16 PM EDT, 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
416 PM EDT FRI JUN 23 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0322 PM TSTM WND DMG 1 ESE LONG PINE 40.10N 80.16W
06/23/2017 WASHINGTON PA EMERGENCY MNGR
GARAGE AND TWO HOUSES DAMAGED
&&
EVENT NUMBER PBZ1701661
98Local storm report, Jun 23, 4:26 PM EDT, 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
426 PM EDT FRI JUN 23 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0341 PM TSTM WND DMG 2 WNW ROSTRAVER TOWNSHI 40.17N 79.81W
06/23/2017 WESTMORELAND PA 911 CALL CENTER
SEVERAL TREES DOWN
&&
EVENT NUMBER PBZ1701662
98The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 2:59 AM EDT | Areal Flood Warning | PBZ | Armstrong, Indiana | 24 hr |
| Jun 23, 1:48 PM EDT | Special Weather Statement | PBZ | Lawrence | 27 min |
| Jun 23, 2:47 PM EDT | Tornado Warning | PBZ | Washington | 28 min |
| Jun 23, 2:56 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jun 23, 3:09 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Fayette, Washington, Westmoreland | 36 min |
| Jun 23, 3:29 PM EDT | Special Weather Statement | PBZ | Greene | 31 min |
| Jun 23, 3:40 PM EDT | Flash Flood Warning | PBZ | Washington | 6 hr |
| Jun 23, 3:47 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Washington, Westmoreland | 43 min |
| Jun 23, 3:59 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 46 min |
| Jun 23, 4:04 PM EDT | Flash Flood Warning | PBZ | Indiana | 6 hr |
| Jun 23, 4:30 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 30 min |
| Jun 23, 4:38 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 8 hr |
| Jun 23, 4:40 PM EDT | Tornado Warning | PBZ | Greene | 35 min |
| Jun 23, 4:46 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene, Washington | 44 min |
| Jun 23, 5:29 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 61 min |
| Jun 23, 5:35 PM EDT | Tornado Warning | PBZ | Fayette, Greene | 25 min |
| Jun 23, 5:57 PM EDT | Areal Flood Advisory | PBZ | Allegheny | 3 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2017Every flash flood warning in 2017
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.