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> SPECIAL NCEP DISCUSSION > CENTRAL OPERATIONS/NCEP/NWS/WASHINGTON DC > 1320Z UTC THURSDAY MAY 13 1999 > > 131320Z...THE 12Z NCEP MODEL CYCLE IS OFF AND RUNNING.. > THE ETA STARTED 2-MINUTES AHEAD OF SCHEDULE AT 1313Z.. > GOOD COVERAGE OF 12Z UPA DATA OVER NORTH AMERICA..RAOB > RECAP..CHH..OTX..FFC..MID/76644..ACA/76805..KCR/78384 > WERE ALL NOT AVAILABLE..WE DID NOT GET A REPORT FROM > OUN SO PLS SEND IT IN IF AVAILABLE..ALSO COULD CHH > PLEASE SEND IN THEIR 101-CODE GROUP REPORT..TOP WAS > SHORT TO 638MB LEVEL..AND ILN WAS SHORT TO 500MB LEVEL.. > SIL DELETED LOW/HGTS AND COLD/TEMPS 150MB AND UP.. > WAL DELETED HIGH/HGTS 100MB AND UP..END.. > > ON OTHER MATTERS..EFFECTIVE AT 1200 UTC 13 MAY THE > 3-D VARIATIONAL (3DVAR) ANALYSIS USED IN THE OPERATIONAL > ETA MODEL RUNS..00Z..03Z..12Z AND 18Z..AND USED IN THE ETA > DATA ASSIMILATION SYSTEM..EDAS..WAS CHANGED TO CORRECT > PARAMETERS INFLUENCING THE BALANCE BETWEEN THE ANALYZED > MASS AND WIND FIELDS..SO ALL USERS..THIS CHANGES WILL > BE IN EFFECT BEGINNING WITH THE CURRENT ETA RUN..FOR > FURTHER DETAILS ON THIS CHANGE CAN BE FOUND AT THE > FOLLOWING WEB-ADDRESS:..ALL LOWER CASE.. > > HTTP://WWW.NWS.NOAA.GOV/OM/TPB/3D-ETA.HTM > > ALSO..OSO WILL BE GOING DOWN AT 1420Z TO DO A SYSTEM SWITCH > THIS SHOULD TAKE BETWEEN 10-15-MINUTES..END.. > > > > SMITH/SDM/NCO/NCEP
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