Alert archive / Pennsylvania / Flash Flood Warnings in 2003

Flash Flood Warning 14, NWS Cleveland, OH

July 21, 2003Crawford County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Jul 21, 2003, 8:46 PM EDT for Crawford County, Pennsylvania. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 21, 2003, 8:46 PM EDT (00:46 UTC)
Expired: Jul 22, 2003, 2:45 AM EDT
In force: 6 hr
Issued by: NWS Cleveland, OH
Area: Whole counties

County Crawford County, PA

The radar

The Pittsburgh radar (KPBZ), 129 km from the middle of the area, began a volume at 00:49 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 00:00Z, 0.8 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 171 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1282 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 150 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS51 KCLE 220050
FFWCLE
PAC039-220645-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
846 PM EDT MON JUL 21 2003

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  CRAWFORD COUNTY IN NORTHWEST PENNSYLVANIA...

* UNTIL 245 AM EDT

* AT 836 PM EDT WEATHER SERVICE RADAR INDICATED SHOWERS AND 
THUNDERSTORMS OVER MUCH OF CRAWFORD COUNTY PENNSYLVANIA. THE SHOWERS 
AND THUNDERSTORMS WILL TAPER OFF BY MIDNIGHT BUT RUNOFF AND 
ADDITIONAL FLOODING IS LIKELY INTO THE EARLY MORNING HOURS.

* SOME LOCATIONS AFFECTED INCLUDE...
  CAMBRIDGE SPRINGS
  CONNEAUTVILLE
  LINESVILLE
  MEADVILLE

SIGNIFICANT FLOODING WILL CONTINUE ACROSS PARTS OF CRAWFORD COUNTY 
ESPECIALLY NEAR TITUSVILLE AND COCHRANTON. RESIDENTS NEAR ANY 
WATERWAY INCLUDING FRENCH CREEK SHOULD BE ALERT FOR RISING WATER 
AND BE PREPARED TO MOVE TO HIGHER GROUND. NEVER DRIVE THROUGH 
FLOODED ROADS. THE WATER MAY BE DEEPER THAN YOU THINK. BE ESPECIALLY 
CAREFUL IN THE DARK.
$$

KOSARIK

2 follow-up statements

000 
WGUS71 KCLE 220355
FFSCLE
OHC103-133-153-155-PAC039-220445-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1146 PM EDT MON JUL 21 2003

FLASH FLOOD WARNINGS REMAIN IN EFFECT FOR MEDINA...SUMMIT...PORTAGE 
AND TRUMBULL COUNTIES IN NORTHEAST OHIO AND CRAWFORD COUNTY IN 
NORTHWEST PENNSYLVANIA.

THE HEAVY RAIN HAD ENDED ACROSS NORTHEAST OHIO AND NORTHWEST 
PENNSYLVANIA BUT FLOODING CONTINUED. RAINFALL AMOUNTS ON MONDAY THE 
21ST AVERAGED 3 TO 5 INCHES IN MANY AREAS. 

ROADS WERE STILL BEING CLOSED IN MANY COMMUNITIES. A FEW BRIDGES 
WERE CLOSED OR WASHED OUT.

A TRAILER PARK IN NILES IN TRUMBULL COUNTY WAS EVACUATED DUE TO 
FLOOD WATERS. SOME MOBILE HOMES WERE REPORTED TO BE FLOATING. 
EVACUATION CENTERS WERE BEING OPENED IN HUDSON AND BATH IN SUMMIT 
COUNTY TO HOUSE RESIDENTS DISPLACED BY FLOOD WATERS.

THE FLOOD WARNINGS WILL REMAIN IN EFFECT INTO THE EARLY MORNING 
HOURS. RESIDENTS WHO LIVE IN LOW LYING AREAS AND NEAR WATERWAYS 
SHOULD EVACUATE IF RISING WATER IS OBSERVED. NEVER DRIVE THROUGH 
FLOODED ROADS.
$$

KOSARIK

000 
WGUS71 KCLE 220654
FFSCLE
PAC039-220845-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
250 AM EDT TUE JUL 22 2003

...THE FLASH FLOOD WARNING FOR CRAWFORD COUNTY HAS BEEN ALLOWED TO 
EXPIRE...

...A FLOOD WATCH REMAINS IN EFFECT OVERNIGHT...

THE HEAVY RAIN WHICH BROUGHT FLOODING TO CRAWFORD COUNTY 
PENNSYLVANIA MONDAY EVENING HAS ENDED.  WHILE LOCALIZED FLOODING 
WILL STILL BE POSSIBLE INTO THE MORNING HOURS...NO ADDITIONAL 
WIDESPREAD FLOODING IS IMMINENT.

THE ATMOSPHERE REMAINS CAPABLE OF PRODUCING THUNDERSTORMS HOWEVER 
AND ANY ADDITIONAL RAIN COULD RESULT IN MORE FLOODING. RESIDENTS 
NEAR WATERWAYS AND LOW LYING AREAS SHOULD REMAIN ALERT AND EVACUATE 
TO HIGHER GROUND IF FLOODING OCCURS. NEVER DRIVE THROUGH FLOODED 
ROADS. BE ESPECIALLY CAREFUL IN THE DARK...IT MAY BE HARDER TO 
RECOGNIZE WATER DEPTH AND DANGER.

$$

TK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 12:08 PM EDT	Flash Flood Warning	CLE	Crawford	4 hr
Jul 22, 2:07 PM EDT	Flash Flood Warning	CLE	Erie	4 hr
Jul 22, 3:33 PM EDT	Flash Flood Warning	CLE	Crawford	4 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2003 Every flash flood warning in 2003

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.