Alert archive / Pennsylvania / Flash Flood Warnings in 2009
Flash Flood Warning 4, NWS Cleveland, OH
NWS Cleveland, OH issued this flash flood warning at May 28, 2009, 5:16 PM EDT for Crawford County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 28, 2009, 5:16 PM EDT (21:16 UTC)
- Expired
- May 28, 2009, 8:12 PM EDT
- In force
- 3 hr
- Issued by
- NWS Cleveland, OH
- Area
- Storm-based polygon
- Flood severity
- None
County Crawford County, PA
The radar
The Pittsburgh radar (KPBZ), 130 km from the middle of the area, began a volume at 21:16 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.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 9.3 hours before the alert went out and 142 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
- 79 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 674 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS51 KCLE 282116
FFWCLE
PAC039-290100-
/O.NEW.KCLE.FF.W.0004.090528T2116Z-090529T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
516 PM EDT THU MAY 28 2009
THE NATIONAL WEATHER SERVICE CLEVELAND HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CRAWFORD COUNTY IN NORTHWEST PENNSYLVANIA
* UNTIL 900 PM EDT
* AT 513 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. AN ADDITIONAL INCH AND A HALF OF RAIN MAY FALL THIS
EVENING AT SOME LOCATIONS. THIS IS IN ADDITION TO THE ONE TO TWO
INCHES THAT FELL ACROSS SOME AREAS IN THE LAST 24 HOURS. THE
GROUND IS BECOMING SATURATED.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MEADVILLE...CAMBRIDGE SPRINGS...LINESVILLE...SPARTANSBURG AND
TITUSVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
VERY HEAVY RAINFALL IS POSSIBLE IN THE WARNED AREA. EXCESSIVE RUNOFF
WILL CAUSE FLOODING OF SMALL CREEKS...STREAMS...AND DRAINAGE DITCHES
ACROSS THE WARNING AREA. IN URBAN AREAS...FLOODING IS LIKELY ALONG
POORLY DRAINED AND LOW LYING HIGHWAYS...STREETS...AND UNDERPASSES. BE
ALERT FOR FLOODED ROADS. TURN AROUND...DONT DROWN
&&
LAT...LON 4185 7960 4162 7961 4162 7982 4149 7999
4148 8050 4184 8038
$$
KIELTYKA2 follow-up statements
000
WGUS71 KCLE 282256
FFSCLE
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
656 PM EDT THU MAY 28 2009
PAC039-290100-
/O.CON.KCLE.FF.W.0004.000000T0000Z-090529T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CRAWFORD PA-
656 PM EDT THU MAY 28 2009
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CRAWFORD COUNTY IN
NORTHWEST PENNSYLVANIA UNTIL 900 PM EDT...
AT 651 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SHOWERS AND ISOLATED THUNDERSTORMS MOVING ACROSS CRAWFORD COUNTY
PENNSYLVANIA. THE RAINFALL RATES HAVE DECREASED. THE GROUND IS
SATURATED AND MOST STREAMS ARE BANKFULL. AT THIS TIME IT LOOKS LIKE
ADDITIONAL RAINFALL THIS EVENING WILL BE UNDER THREE QUARTERS OF AN
INCH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. TURN AROUND...DONT DROWN
&&
LAT...LON 4185 7960 4162 7961 4162 7982 4149 7999
4148 8050 4184 8038
$$
KIELTYKA000
WGUS71 KCLE 290012
FFSCLE
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
812 PM EDT THU MAY 28 2009
PAC039-290023-
/O.CAN.KCLE.FF.W.0004.000000T0000Z-090529T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CRAWFORD PA-
812 PM EDT THU MAY 28 2009
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CRAWFORD COUNTY IN
NORTHWEST PENNSYLVANIA IS CANCELLED...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
THE RAINFALL AMOUNTS THE REST OF THE EVENING WILL BE A QUARTER INCH
OR LESS. SOME ROADS WEST AND SOUTH OF MEADVILLE STILL HAVE SOME HIGH
WATER ON THEM AND MOTORISTS NEED TO USE CAUTION. THE WATER WILL
SLOWLY RECEDE OVERNIGHT AS THE GROUND IS SATURATED.
LAT...LON 4185 7960 4162 7961 4162 7982 4149 7999
4148 8050 4184 8038
$$
KIELTYKAThe office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 4:36 PM EDT | Areal Flood Advisory | CLE | Crawford | 4 hr |
| May 28, 5:52 PM EDT | Areal Flood Advisory | CLE | Erie | 3 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2009Every flash flood warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.