Prognostic Meteorological Discussion
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2
000
FXAK02 KWNH 191703
PMDAK

ALASKA EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
103 PM EDT SAT APR 19 2014

VALID 12Z WED APR 23 2014 - 12Z SUN APR 27 2014


THE ONLY DIFFERENCE BETWEEN THIS FORECAST PACKAGE AND THE LAST
COUPLE IS THAT THE MANUAL PROGS WERE BASED ON THE ECENS MEAN
RATHER THAN THE MOST RECENT OPERATIONAL ECMWF. UNFORTUNATELY, THE
LAST TWO ECMWF RUNS BROKE CONTINUITY, WITH NEITHER OF THEM
RESEMBLING THE OTHER. THE USE OF THE MEAN REQUIRED THE ADDITION OF
INTERMEDIATE ISOBARS ALONG FRONTS AND AROUND THE CENTERS OF
CIRCULATION TO BETTER DEFINE WIND DIRECTION AND SPEED. THE
FUNDAMENTAL THINGS, HOWEVER, STILL APPLY: THE BLOCKING RIDGE OVER
THE STATE WILL SUPPRESS MOST OF THE PRECIPITATION AND GRADIENT
WINDS TO THE SOUTH. THERE IS CURRENTLY NO SIGN THAT THIS LATEST
BLOCK WILL UNWIND THROUGH THE END OF THE MONTH.


CISCO

$$





USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.