Alert archive / Pennsylvania / Flash Flood Warnings in 2006

Flash Flood Warning 16, NWS Pittsburgh, PA

June 25, 2006Armstrong County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 25, 2006, 1:09 PM EDT for Armstrong 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 counties it named.

The facts

Issued
Jun 25, 2006, 1:09 PM EDT (17:09 UTC)
Expired
Jun 25, 2006, 4:15 PM EDT
In force
3 hr
Issued by
NWS Pittsburgh, PA
Area
Counties, with a storm outline in the text

County Armstrong County, PA

The radar

The Pittsburgh radar (KPBZ), 71 km from the middle of the area, began a volume at 17:10 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, 5.2 hours before the alert went out and 70 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, Pittsburgh, PA at 12:00Z on 2006-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 267 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2006-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 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
267 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
638 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Pittsburgh, PA wrote its last area forecast discussion before this flash flood warning went out at Jun 25, 3:01 AM EDT, 10 hours 8 minutes earlier.

Area forecast discussion, Jun 25, 3:01 AM EDT, 10 hours 8 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
301 AM EDT SUN JUN 25 2006

.SHORT TERM (TODAY THROUGH MONDAY NIGHT)...
FRONT EAST OF AREA WILL RETROGRESS WESTWARD ACROSS THE REGION
TODAY AS A WARM FRONT...HERALDING THE BEGINNING OF A WET PERIOD.
TROPICAL REMNANTS WILL MOVE NORTHWARD ALONG THE FRONT EARLY THIS
WEEK...BRINGING SIGNIFICANT PRECIPITATION AMOUNTS AND POTENTIAL
FLOODING ON AN AXIS THROUGH PA MONDAY AND TUESDAY. SITUATION
BEARS WATCHING FOR POTENTIAL FLOOD WATCH.

&&

.LONG TERM (TUESDAY THROUGH SATURDAY)...
WARM AND HUMID CONDITIONS WILL PREVAIL...WITH A THREAT OF SHOWERS
AND THUNDERSTORMS DAILY.

&&

.AVIATION...
TIGHT GRADIENT OF CLOUDS THIS EARLY MORNING. CLEAR SKIES TO SCT-BKN
CIRRUS OVER WESTERN AND NORTHERN PORTIONS OF FORECAST AREA WHILE
MIDDECK COVERS THE SOUTH AND EAST. GENERAL TREND THROUGH THE DAY
WILL BE FOR LOWER CLOUDS TO CONTINUE TO MOVE NORTHWEST. EXPECT VFR
CONDITIONS THROUGH THE FORECAST AREA. MAY SEE SOME VIS DROP TO MVFR
RANGE EARLY THIS MORNING WITH PATCHY FOG AND THEN ONCE AGAIN LATER
TODAY AND TONIGHT AS RAIN SHOWERS MOVE ACROSS THE REGION. AREAS OF
HEAVIER SHOWERS THIS AFTERNOON WILL REMAIN ACROSS SOUTHERN REACHES
OF THE AREA AND THEN MOVE NORTHWARD DURING THE LATE EVENING HOURS.
SCATTERED CONVECTION IS POSSIBLE THIS AFTERNOON BUT NO WIDESPREAD
DEVELOPMENT IS EXPECTED.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.
&&
Hazardous weather outlook, Jun 25, 11:46 AM EDT, 1 hour 23 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PITTSBURGH PA
1146 AM EDT SUN JUN 25 2006

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-
020>023-029>032-WVZ001>004-012-021>023-041-261600-
GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-
JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-
VENANGO-FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-
ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-WESTMORELAND-GREENE-
FAYETTE-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA-
PRESTON-TUCKER-
1146 AM EDT SUN JUN 25 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN
MARYLAND...EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST
PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA...NORTHERN WEST VIRGINIA
AND NORTHERN PANHANDLE OF WEST VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT
A FLASH FLOOD WATCH IS IN EFFECT THROUGH TUESDAY MORNING FOR MUCH
OF WESTERN PENNSYLVANIA...NORTHERN WEST VIRGINIA INCLUDING THE
NORTHERN PANHANDLE AND GARRETT COUNTY MARYLAND. HEAVY RAINS WILL
MOVE THROUGH THE WATCH AREA AND COULD REACH 3 INCHES BY TUESDAY
MORNING WITH ISOLATED AMOUNTS OVER 5 INCHES.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
SIGNIFICANT RAINFALL WILL CONTINUE AT LEAST INTO TUESDAY MORNING.
A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY MORNING FOR
MUCH OF WESTERN PENNSYLVANIA NORTHERN WEST VIRGINIA INCLUDING THE
NORTHERN PANHANDLE AND GARRETT COUNTY MARYLAND.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS IN EFFECT. SPOTTERS PLEASE CALL IN EVERY
INCH OF NEW RAINFALL.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 9:05 AM EDTFlash Flood WatchPBZAllegheny, Armstrong, Beaver, Butler, Clarion, Forest and 6 more56 hr
Jun 25, 10:33 AM EDTFlash Flood WarningPBZArmstrong3 hr
Jun 25, 12:40 PM EDTFlash Flood WarningPBZIndiana, Jefferson3 hr
Jun 25, 12:55 PM EDTFlash Flood WarningPBZIndiana3 hr
Jun 25, 1:14 PM EDTFlash Flood WarningPBZJefferson3 hr
Jun 25, 3:18 PM EDTFlash Flood WarningPBZButler3 hr
Jun 25, 3:40 PM EDTFlash Flood WarningPBZIndiana, Jefferson3 hr
Jun 25, 4:10 PM EDTFlash Flood WarningPBZArmstrong3 hr
Jun 25, 6:09 PM EDTFlash Flood WarningPBZButler3 hr
Jun 25, 6:38 PM EDTFlash Flood WarningPBZIndiana, Jefferson3 hr
Jun 25, 6:45 PM EDTFlash Flood WarningPBZWestmoreland3 hr
Jun 25, 7:11 PM EDTFlash Flood WarningPBZArmstrong3 hr
Jun 25, 11:41 AM EDTFlash Flood WarningPBZPreston, Tucker6 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2006Every flash flood warning in 2006

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.