Alert archive / Pennsylvania / Special Weather Statements in 2016

Special Weather Statement, NWS State College, PA

June 21, 2016Somerset County, Pennsylvania

NWS State College, PA issued this special weather statement at Jun 21, 2016, 12:21 PM EDT for Somerset County, Pennsylvania. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 21, 2016, 12:21 PM EDT (16:21 UTC)
Expired
Jun 21, 2016, 1:15 PM EDT
In force
54 min
Issued by
NWS State College, PA

County Somerset County, PA

The radar

The Pittsburgh radar (KPBZ), 116 km from the middle of the area, began a volume at 16:23 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 (KAGC), launched 12:00Z, 4.4 hours before the alert went out and 99 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 2016-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 174 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2016-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 square meters per square second.1939587897Sfc1 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
174 J/kg
Mixed-layer CIN
-215 J/kg
Mixed-layer LCL
936 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

As transmitted.

126 
WWUS81 KCTP 211621
SPSCTP

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1221 PM EDT TUE JUN 21 2016
 
PAZ033-211715-
SOMERSET PA-
1221 PM EDT TUE JUN 21 2016

...HEAVY RAIN OVER SOUTHERN SOMERSET COUNTY...

AT 1220 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM OVER
SOUTHERN SOMERSET COUNTY MOVING SOUTHEAST AT 45 MPH. VERY HEAVY RAIN
IS EXPECTED OVER LOCATIONS LIKE MEYERSDALE...MOUNT DAVIS...URSINA...
ADDISON...SALISBURY...WELLERSBURG...CALLIMONT...AND CONFLUENCE.

UP TO 2 INCHES OF RAIN IS POSSIBLE BY 1 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MINOR FLOODING MAY DEVELOP. DO NOT DRIVE INTO WATER COVERING THE
ROADWAY. 

&&

LAT...LON 3972 7938 3973 7939 3974 7941 3974 7940
      3976 7940 3977 7938 3978 7940 3979 7935
      3980 7937 3983 7937 3989 7927 3980 7877
      3972 7881
TIME...MOT...LOC 1620Z 294DEG 40KT 3977 7919 

$$

DANGELO

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 12:38 AM EDTSpecial Weather StatementCTPWarren37 min
Jun 21, 1:43 AM EDTSpecial Weather StatementCTPTioga47 min
Jun 21, 2:23 AM EDTSpecial Weather StatementCTPPotter37 min
Jun 21, 3:01 AM EDTSpecial Weather StatementCTPLycoming, Sullivan59 min
Jun 21, 4:08 AM EDTSpecial Weather StatementCTPColumbia, Montour22 min
Jun 21, 6:43 AM EDTSpecial Weather StatementCTPCumberland47 min
Jun 21, 7:16 AM EDTSpecial Weather StatementCTPCumberland29 min
Jun 21, 7:22 AM EDTSevere Thunderstorm WarningCTPAdams, Cumberland, York53 min
Jun 21, 8:11 AM EDTSevere Thunderstorm WarningCTPYork27 min
Jun 21, 11:40 AM EDTSpecial Weather StatementCTPAdams, Franklin, Fulton20 min
Jun 21, 12:01 PM EDTSpecial Weather StatementCTPAdams, Franklin44 min
Jun 21, 7:20 PM EDTSpecial Weather StatementCTPAdams25 min
Jun 21, 7:47 PM EDTSpecial Weather StatementCTPAdams43 min
Jun 21, 7:59 PM EDTSevere Thunderstorm WarningCTPAdams, York61 min

Nearby

Special Weather Statements in Pennsylvania, 2016Every special weather statement in 2016

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.