386
NOUS70 KSEW 252201
OEPZSE
TERMINAL FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CWSU AUBURN WA
300 PM PDT TUE MAY 25 2010
KSEA/SEA-TAC DISCUSSION
AN UPPER LEVEL LOW/ TROUGH FEATURE TO REMAIN OVER THE AREA.
* SCATTERED SHOWERS DIMINISHING THIS EVENING.
* GENERALLY VFR CONDITIONS SHOULD CONTINUE.
12HR WRKTAF
KSEA 252335Z 2600/2612 28006KT P6SM SCT040 BKN060
TEMPO 2600/2604 -SHRA OVC040 ...
KSEA CURRENT ARRIVAL RATE...46 SOUTH FLOW
KSEA WX DELAYS...NONE
IMPORTANT NUMBERS FOR KSEA...
CIG/WX VSBY AAR IMPACT
>6000 >10 48-52 NO ARTCC PROBLEMS
4100-6000 >6 44-46 LMTD VAPS (METER DELAYS)
3000-4000 >6 40-44 LMTD/NO VAPS (TMA, CFR)
1000-3000 >6 40-44 NO VAPS (TMA, CFR AND/OR GDP)
100-900 1-5 30-38 MOD DELAYS (TMA, CFR, AND/OR GDP)
<100 <1 28-30 MAJOR DELAYS (TMA, CFR, AND/OR GDP)
FZRA/FZDZ/SN 00-28 MAJOR DELAYS FOR PLOWING/DEICING
(TMA,CFR, AND/OR GDP)
TSRA VRBL DELAYS (TMA,CFR,GS AND/OR GDP)
WINDS(2-6K)>30KT 24-32 MAJOR DELAYS (TMA,CFR AND/OR GDP)
WINDSHIFTS 20MIN DELAYS/RWY SWITCH/FLOW CHG
KPDX/PORTLAND DISCUSSION
UPPER LEVEL LOW/TROUGH FEATURE TO REMAIN OVER THE AREA OVERNIGHT.
* SCATTERED SHOWERS TO CONTINUE THROUGH THIS EVENING.
* GENERALLY VFR CONDITIONS SHOULD CONTINUE.
12HR WRKTAF
KPDX 252335Z 2600/2612 VRB03KT P6SM -SHRA SCT040 OVC060
TEMPO 2600/2602 5SM SHRA OVC030
FM260600 VRB03KT P6SM VCSH BKN035 OVC060 ...
KPDX CURRENT ARRIVAL RATE...28 WEST FLOW
KPDX WX DELAYS...NONE
IMPORTANT NUMBERS FOR KPDX....
CIG/WX VSBY AAR IMPACT
>4100 >6 60 NO ARTCC PROBLEMS
1000-4000 >6 40 LMTD/NO VAPS (TMA,CFR AND/OR GDP)
100-900 >1-5 24 MOD DELAYS (TMA,CFR AND/OR GDP)
<100 <1 24 MOD DELAYS (TMA,CFR AND/OR GDP)
FZRA/FZDZ/SN 20 MAJOR DELAYS FOR PLOWING/DEICING
(TMA,CFR, AND/OR GDP)
TSRA VRB DELAYS (TMA,CFR,GS AND/OR GDP)
SFC WD 170-230 DEG, 32 MOD DELAYS (TMA,CFR AND/OR GDP)
WS>20KT, CIG>=4000 FT
SFC WD 170-230 DEG, 24 MOD DELAYS (TMA,CFP AND/OR GDP)
WS>20KT, CIG<4000 FT
SFC WINDSHIFTS 10MIN DELAYS/RWY SWITCH/FLOW CHG
STG E SFC WINDS WITH 48 PSBL MINOR DELAYS
STG S-SW WINDS ABV
1500 FT AGL
MIT=MILES IN TRAIL GDP=GROUND DELAY PROGRAM GS=GROUND STOP
CFR=CALL FOR RELEASE TMA=TRAFFIC MANAGEMENT ADVISOR
VAPS=VISUAL APPROACHES
SRA
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