Alert archive / Pennsylvania / Flash Flood Warnings in 2009

Flash Flood Warning 1, NWS Binghamton, NY

May 24, 2009Lackawanna County, Luzerne County, Wyoming County, Pennsylvania

NWS Binghamton, NY issued this flash flood warning at May 24, 2009, 3:17 PM EDT for Lackawanna County, Luzerne County, Wyoming 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
May 24, 2009, 3:17 PM EDT (19:17 UTC)
Expired
May 24, 2009, 6:37 PM EDT
In force
3 hr
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Flood severity
None

Counties Lackawanna County, PA, Luzerne County, PA, Wyoming County, PA

The radar

The Binghamton radar (KBGM), 92 km from the middle of the area, began a volume at 19:18 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

Brookhaven, NY (KOKX), launched 12:00Z, 7.3 hours before the alert went out and 258 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, Brookhaven, NY at 12:00Z on 2009-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 28 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, Brookhaven, NY at 12:00Z on 2009-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 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
28 J/kg
Mixed-layer CIN
-132 J/kg
Mixed-layer LCL
740 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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 Binghamton, NY wrote its last area forecast discussion before this flash flood warning went out at May 23, 7:40 PM EDT, 19 hours 37 minutes earlier.

Area forecast discussion, May 23, 7:40 PM EDT, 19 hours 37 minutes before
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Hazardous weather outlook, May 23, 4:33 PM EDT, 22 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BINGHAMTON NY
433 PM EDT SAT MAY 23 2009

NYZ009-015>018-022>025-036-037-044>046-055-056-242045-
NORTHERN ONEIDA-YATES-SENECA-SOUTHERN CAYUGA-ONONDAGA-STEUBEN-
SCHUYLER-CHEMUNG-TOMPKINS-MADISON-SOUTHERN ONEIDA-CORTLAND-CHENANGO-
OTSEGO-TIOGA-BROOME-
433 PM EDT SAT MAY 23 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW YORK.

.DAY ONE...TONIGHT.

...A FEW STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE FROM LATE
AFTERNOON INTO THE EVENING...

ISOLATED TO SCATTERED THUNDERSTORMS WILL CONTINUE INTO THE
EVENING HOURS BEFORE ENDING BY LATE EVENING.

THE POTENTIAL EXISTS FOR A FEW THUNDERSTORMS TO PRODUCE STRONG
GUSTY WINDS AND HAIL. THE BEST CHANCE FOR STRONG TO SEVERE STORMS WILL
BE MAINLY EAST AND SOUTH OF THE FINGER LAKES REGION AND ACROSS THE
NORTHERN TIER OF EASTERN PENNSYLVANIA.

LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATER
UPDATES ON THIS SITUATION. YOU CAN ALSO VISIT OUR INTERNET WEB
SITE AT WEATHER.GOV/BGM FOR THE LATEST.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

FULL AREA WIDE SKYWARN SPOTTER ACTIVATION IS NOT EXPECTED AT THIS
TIME. HOWEVER...SKYWARN ACTIVATION MAY BE NEEDED LOCALLY IN A FEW
COUNTIES THIS EVENING.

NYZ057-062-PAZ038>040-043-044-047-048-072-242045-
DELAWARE-SULLIVAN-BRADFORD-SUSQUEHANNA-NORTHERN WAYNE-WYOMING-
LACKAWANNA-LUZERNE-PIKE-SOUTHERN WAYNE-
433 PM EDT SAT MAY 23 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW
YORK...SOUTHEASTERN NEW YORK AND NORTHEAST PENNSYLVANIA.

.DAY ONE...TONIGHT.

...A FEW STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE INTO THE
EVENING...

THE POTENTIAL EXISTS FOR A FEW THUNDERSTORMS TO FORM AND PRODUCE
STRONG GUSTY WINDS AND HAIL THIS EVENING. THE BEST CHANCE FOR STRONG TO
SEVERE THUNDERSTORMS WILL BE MAINLY FROM THE POCONOS TO CATSKILLS.
ALL THE THUNDERSTORM ACTIVITY WILL TAPER OFF AFTER SUNSET.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

...STRONG TO POTENTIALLY SEVERE THUNDERSTORMS POSSIBLE SUNDAY
AFTERNOON...

A COLD FRONT WILL DROP SOUTH INTO PENNSYLVANIA AND THE SOUTHERN
CATSKILLS SUNDAY AFTERNOON AND EVENING. SCATTERED THUNDERSTORMS
ARE EXPECTED TO ACCOMPANY THIS FRONT...A FEW OF WHICH COULD
CONTAIN DAMAGING WINDS AND LARGE HAIL.

LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATER
UPDATES ON THIS SITUATION. YOU CAN ALSO VISIT OUR INTERNET WEB
SITE AT WEATHER.GOV/BGM FOR THE LATEST.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED SUNDAY AFTERNOON FOR
NORTHEAST PENNSYLVANIA AND THE CATSKILLS.

DJN

The office that day

Everything else NWS Binghamton, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 10:56 PM EDTSevere Thunderstorm WarningBGMDelaware34 min
May 24, 2:55 AM EDTAreal Flood AdvisoryBGMDelaware3 hr
May 24, 2:26 AM EDTAreal Flood AdvisoryBGMSusquehanna, Wayne3 hr
May 24, 1:12 PM EDTSevere Thunderstorm WarningBGMLackawanna, Luzerne48 min
May 24, 1:18 PM EDTAreal Flood AdvisoryBGMLackawanna, Luzerne46 min
May 24, 2:49 PM EDTSevere Thunderstorm WarningBGMLackawanna, Luzerne56 min
May 24, 3:05 PM EDTSevere Thunderstorm WarningBGMBradford55 min

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.