Alert archive / Pennsylvania / Areal Flood Warnings in 2011

Areal Flood Warning 4, NWS State College, PA

March 10, 2011Bedford County, Somerset County, Pennsylvania

NWS State College, PA issued this areal flood warning at Mar 10, 2011, 3:28 PM EST for Bedford County, Somerset 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
Mar 10, 2011, 3:28 PM EST (20:28 UTC)
Expired
Mar 10, 2011, 9:15 PM EST
In force
6 hr
Issued by
NWS State College, PA
Area
Storm-based polygon
Flood severity
None

Counties Bedford County, PA, Somerset County, PA

The radar

The State College radar (KCCX), 122 km from the middle of the area, began a volume at 20:30 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, 8.5 hours before the alert went out and 123 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 2011-03-10Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2011-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 321 square meters per square second.1939587897117136Sfc1 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
520 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
321 m²/s²
0-3 km storm-relative helicity
364 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 areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS State College, PA wrote its last area forecast discussion before this areal flood warning went out at Mar 10, 2:50 PM EST, 38 minutes earlier.

Area forecast discussion, Mar 10, 2:50 PM EST, 38 minutes before
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Hazardous weather outlook, Mar 10, 5:20 AM EST, 10 hours 8 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
520 AM EST THU MAR 10 2011

PAZ006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-111030-
POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-NORTHERN CENTRE-
SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-SOMERSET-
BEDFORD-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING-SULLIVAN-
SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND-
ADAMS-YORK-LANCASTER-
520 AM EST THU MAR 10 2011

...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

PAZ004-005-111030-
WARREN-MCKEAN-
520 AM EST THU MAR 10 2011

...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.

PERIODS OF SNOW WILL FALL FRIDAY INTO FRIDAY NIGHT...LIKELY
ACCUMULATING A FEW INCHES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Mar 10, 2:26 PM EST, 1 hour 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
226 PM EST THU MAR 10 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0200 PM     FLOOD            FRANKSTOWN              40.44N  78.35W
03/10/2011                   BLAIR              PA   TRAINED SPOTTER

            JUNIATA RIVER IS OVER ITS BANK AND AFFECTING RESERVOIR
            RD NEAR RT 22

&&

EVENT NUMBER CTP1100005

KREKELER

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 10, 4:45 AM ESTRiver Flood WarningCTPColumbia4 days
Mar 10, 4:45 AM ESTRiver Flood WarningCTPColumbia, Montour, Northumberland4 days
Mar 10, 4:45 AM ESTRiver Flood WarningCTPCentre, Snyder, Union49 hr
Mar 10, 4:45 AM ESTRiver Flood WarningCTPCumberland63 hr
Mar 10, 4:45 AM ESTRiver Flood WarningCTPCumberland, York61 hr
Mar 10, 4:45 AM ESTRiver Flood WarningCTPDauphin, Lebanon, Schuylkill54 hr
Mar 10, 4:45 AM ESTRiver Flood WarningCTPDauphin, Lebanon63 hr
Mar 10, 4:45 AM ESTRiver Flood WarningCTPDauphin70 hr
Mar 10, 4:45 AM ESTRiver Flood WarningCTPLancaster, York24 hr
Mar 10, 4:45 AM ESTRiver Flood WarningCTPLycoming, Sullivan30 hr
Mar 10, 4:45 AM ESTRiver Flood WarningCTPBlair, Huntingdon38 hr
Mar 10, 4:45 AM ESTRiver Flood WarningCTPHuntingdon45 hr
Mar 10, 10:09 AM ESTAreal Flood AdvisoryCTPAdams, Cumberland, Dauphin, Franklin, Juniata, Lancaster and 4 more3 hr
Mar 10, 10:42 AM ESTAreal Flood AdvisoryCTPColumbia, Huntingdon, Juniata, Lycoming, Montour, Northumberland and 5 more4 hr
Mar 10, 11:35 AM ESTRiver Flood WarningCTPDauphin, Juniata, Northumberland, Perry, Union64 hr
Mar 10, 11:35 AM ESTRiver Flood WarningCTPCumberland, Dauphin, Juniata, Lancaster, Northumberland, Perry and 2 more3 days
Mar 10, 11:35 AM ESTRiver Flood WarningCTPLancaster, York4 days
Mar 10, 1:09 PM ESTAreal Flood AdvisoryCTPAdams, Cumberland, Dauphin, Huntingdon, Lancaster, Lebanon and 2 more6 hr
Mar 10, 1:29 PM ESTRiver Flood WarningCTPPerry27 hr
Mar 10, 2:49 PM ESTAreal Flood AdvisoryCTPColumbia, Juniata, Lebanon, Lycoming, Montour, Northumberland and 6 more4 hr
Mar 10, 4:31 PM ESTAreal Flood WarningCTPAdams, Blair, Cambria, Centre, Clearfield, Cumberland and 9 more10 hr
Mar 10, 4:46 PM ESTSpecial Weather StatementCTPBedford, Blair, Cambria44 min
Mar 10, 5:11 PM ESTAreal Flood WarningCTPCameron, Clinton, Columbia, Dauphin, Elk, Lancaster and 10 more12 hr
Mar 10, 5:20 PM ESTSpecial Weather StatementCTPBlair, Cambria25 min

Nearby

Areal Flood Warnings in Pennsylvania, 2011Every areal flood warning in 2011

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.