Alert archive / Pennsylvania / Flash Flood Warnings in 2017

Flash Flood Warning 17, NWS Cleveland, OH

November 5, 2017Erie County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Nov 5, 2017, 6:22 PM EST for Erie County, Pennsylvania. It was in force for 5 hr. 4 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
Nov 5, 2017, 6:22 PM EST (23:22 UTC)
Expired
Nov 5, 2017, 11:15 PM EST
In force
5 hr
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Flood severity
None

County Erie County, PA

The radar

The Buffalo radar (KBUF), 139 km from the middle of the area, began a volume at 23:22 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
Nov 5, 7:45 PM ESTFLASH FLOODErie, PA*** 2 FATAL *** FLOOD WATERS CAUSED A BASEMENT WALL TO COLLAPSE TRAPPING AND SUBSEQUENTLY DROWNING RESIDENTS.
Nov 5, 7:50 PM ESTFLASH FLOOD4 Sw Erie, PAFLASH FLOODING OCCURRING IN MILLCREEK TOWNSHIP. FIVE FEET OF WATER ON SOME ROADWAYS. WATER RESCUES UNDERWAY. STRUCTURAL DAMAGE DUE TO FLOODING. POWERLINES DOWN.
Nov 5, 7:55 PM ESTFLASH FLOOD3 Ese Erie, PAMILLCREEK TOWNSHIP FIRE STATION BEING EVACUATED DUE TO FLOODING.
Nov 5, 8:01 PM ESTFLASH FLOODNorth East, PAFLOODING OF HOUSES AND ROADWAYS.

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

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.4 hours before the alert went out and 140 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, Buffalo Intl Airport, NY at 12:00Z on 2017-11-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Buffalo Intl Airport, NY at 12:00Z on 2017-11-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 384 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
669 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
384 m²/s²
0-3 km storm-relative helicity
396 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

082 
WGUS51 KCLE 052322
FFWCLE
PAC049-060415-
/O.NEW.KCLE.FF.W.0017.171105T2322Z-171106T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
622 PM EST SUN NOV 5 2017

The National Weather Service in Cleveland has issued a

* Flash Flood Warning for...
  Central Erie County in northwestern Pennsylvania...

* Until 1115 PM EST

* At 621 PM EST, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to one inch of rain has 
  already fallen. Additional storms with torrential rainfall are 
  expected to move into the warned area over the next hour. Flash 
  flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Erie, North East, Girard, Northwest Harborcreek, Harborcreek,
  Lawrence Park, Wesleyville, Lake City, Platea, McKean and Avonia.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4228 7977 4227 7976 4212 7976 4189 8052
      4200 8052 4211 8021 4219 8012 4224 7996

$$

Jamison
2 follow-up statements
569 
WGUS71 KCLE 060057
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
757 PM EST SUN NOV 5 2017

PAC049-060415-
/O.CON.KCLE.FF.W.0017.000000T0000Z-171106T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Erie PA-
757 PM EST SUN NOV 5 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM EST FOR
CENTRAL ERIE COUNTY...

At 752 PM EST, emergency management reported flash flooding in Mill 
Creek. Over two inches of rain have already fallen. Flash flooding 
is already occurring. Emergency Management reports roads with up to 
five feet of water with water rescues ongoing. Less than an inch of 
rainfall is expected the rest of the night, however earlier runoff 
will continue the flood risk. 

Some locations that will experience flooding include...
Erie, North East, Girard, Northwest Harborcreek, Harborcreek,
Lawrence Park, Wesleyville, Lake City, Platea, McKean and Avonia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4228 7977 4227 7976 4212 7976 4189 8052
      4200 8052 4211 8021 4219 8012 4224 7996

$$

Jamison
210 
WGUS71 KCLE 060140
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
840 PM EST SUN NOV 5 2017

PAC049-060415-
/O.CON.KCLE.FF.W.0017.000000T0000Z-171106T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Erie PA-
840 PM EST SUN NOV 5 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM EST FOR
CENTRAL ERIE COUNTY...

At 839 PM EST, emergency management reported flash flooding in 
Millcreek. Numerous roads are closed and properties inundated. 
Please report flooding to local officials. 

Some locations that will experience flooding include...
Erie, North East, Girard, Northwest Harborcreek, Harborcreek,
and Avonia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4228 7977 4227 7976 4212 7976 4189 8052
      4200 8052 4211 8021 4219 8012 4224 7996

$$

Jamison

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 5, 2:08 AM ESTFlash Flood WatchCLECrawford, Erie25 hr
Nov 5, 6:31 PM ESTSevere Thunderstorm WarningCLEErie59 min
Nov 5, 6:40 PM ESTTornado WarningCLEErie35 min
Nov 5, 6:46 PM ESTSevere Thunderstorm WarningCLECrawford59 min

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.