Program Status for 6 February 2001 : IOP 06
Status |
Flight Observations |
Forecast Discussion |
Aircraft Status |
Flight Plan |
Soundings Status
Status |
February 6 0810 |
P3 take-off at 0807 PST.
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Wednesday, February 7 |
No flight. Weather briefing 1000 PST.
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Status |
Flight Observations |
Forecast Discussion |
Aircraft Status |
Flight Plan |
Soundings Status
In Flight Observations |
February 6 1523 PST |
At 38deg41minN, 124deg14minW (spiralling down at pt 17)
at 591 mb (spiral top):
winds: 67kt, 318deg
air temp: -14.9degC ,dewpt temp: -45.4degC
at 976 mb (spiral bottom), ~1000 ft:
winds: 37kt 336deg
air temp: 5.1degC ,dewpt temp: -2.7degC
We are now heading for Monterey at 1000ft.
ETA 4:20pm PST (wheels on the ground).
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February 6 1518 PST |
At 38deg44minN, 123deg48minW :
at 779 mb (porp bottom)
winds: 47kt, 342deg
air temp: -8.1degC ,dewpt temp: -17.5degC
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February 6 1513 PST |
At 38deg48minN, 123deg21minW :
at 591 mb (porp top at 14000 ft):
winds: 59 kt, 316deg
air temp: -18.9degC ,dewpt temp: -42.9degC
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February 6 1509 PST |
At 38deg52minN, 123deg0minW :
at 775 mb (at porp bottom)
winds: 31kt, 330deg
air temp: -8.8degC ,dewpt temp: -12.9degC
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February 6 1503 PST |
At 38deg57minN, 122deg29minW (have started final porpoise, moving to pt 17; heading: 264deg)
at 595 mb (at porp top):
winds: 19kt, 335deg
air temp: -22.9degC ,dewpt temp: -34.4degC
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February 6 1445 PST |
Moderate turbulence on east side of coastal mntns
at ~ 38deg56minN, 122deg43minW, at 780 mb.
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February 6 1438 PST |
At 39deg4minN, 122deg3minW (at pt 16, about to begin final porpoise)
at 980 mb:
winds: 10kt 315deg
air temp: -6.9degC ,dewpt temp: -7.9degC
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February 6 1438 PST |
At 38deg49minN, 123deg26minW, (about to cross coastal mntns; heading: 70deg)
at 780 mb:
winds: 49kt, 338deg
air temp: -7.6degC ,dewpt temp: -16.1degC
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February 6 1418 PST |
At 38deg46minN, 123deg59minW (at pt 14)
at 982 mb (~1000 ft)
winds: 40kt, 341deg
air temp: 5.7degC ,dewpt temp: 0.3degC
At UTC, P3 at (at pt 15)
at 982 mb:
winds: 38kt, 342deg
air temp: 5.3degC ,dewpt temp: 0.1degC
at 780 mb:
winds: 46kt, 339deg
air temp: -8.0degC ,dewpt temp: -22.0degC
We are now moving to pt 16 at ~7000ft.
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February 6 1410 PST |
At 39deg19minN, 124deg8minW (heading: 170deg)
at 982mb:
winds: 36kt, 338deg
air temp: 5.2degC, dewpt temp: -2.2degC
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February 6 1349 PST |
At 39deg25minN, 124deg38minW (now at pt 12 and spiralling down)
at 526 mb (at porp top):
winds: 71kt, 315deg
air temp: -21.2degC ,dewpt temp: -48.1degC
at 982 mb (spiral bottom)
winds: 34kt, 338deg
air temp: 5.3degC ,dewpt temp: 0.4degC
Secondary wind max at 850mb; 45kt 348deg
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February 6 1344 PST |
At 39deg28minN, 124deg8minW:
at 696 mb (porp bottom):
winds: 44kt, 340deg
air temp: -14.6degC, dewpt temp: -32.1degC
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February 6 1338 PST |
At 39deg32minN, 123deg38minW:
At 525 mb (porp top):
winds: 54kt, 310deg
air temp:-24.4degC , dewpt temp: -49.1degC
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February 6 1327 PST |
Have begun porpoise from pt 11 to pt 12.
At 2127 UTC, P3 at 39deg41minN, 122deg40minW:
at 529 mb (porp top):
winds: 36kt, 298deg
air temp: -26.1degC ,dewpt temp: -46.1degC
At UTC, P3 at :
at 695 mb (porp bottom)
winds: 36kt, 337deg
air temp: -15.1degC ,dewpt temp: -17.1degC
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February 6 1315 PST |
At 39deg43minN, 122deg36minW, 700 mb, (almost to pt 11, heading: 79deg)
Obs: winds: 10kt, 4deg, air temp: -13.4degC ,dewpt temp: -15.4degC
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February 6 1305 PST |
At 39deg35minN, 123deg21minW, 701 mb, (moving to pt 11 at ~10000ft)
Obs: winds: 346deg, 40kt, air temp: -14.4degC ,dewpt temp: -20.7degC
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February 6 1253 PST |
At 39deg25min, 124deg25minW, 700 mb, (just spiralled up at pt 10
moving at 700 mb, ~10000 ft toward pt 11, heading: 70deg)
Obs: winds: 337deg, 45kt, air temp: -14.1degC ,dewpt temp: -26.0degC
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February 6 1243 PST |
At 39deg27min, 124deg15minW, 979 mb, at pt 9, now moving toward pt 10: heading 269deg
Obs: winds: 338deg, 39kt, air temp: 5.0degC ,dewpt temp: 0.6degC
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February 6 1235 PST |
At 40deg0minN, 124deg20minW, 979 mb (~1000 ft), at pt 8, moving to pt 9 heading: 175deg
Obs: winds: 33kt, 344deg, air temp: 4.4degC ,dewpt temp: 1.3degC
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February 6 1224 PST |
At 39deg54minN, 124deg51minW, 527 mb, (at pt 7)
Obs: winds: 316deg, 74kt, air temp: -20.5degC ,dewpt temp:-47.4degC
at lowest pt in porpoise (~10000ft)
at 695 mb:
winds:42kt, 344deg
at 2012 UTC at 40deg4minN, 123deg51minW
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February 6 1206 PST |
At 40deg7minN, 123deg27minW, 527 mb, heading toward pt 7, heading: 263deg
Obs: winds: 313deg, 32kt, air temp:-27.0degC ,dewpt temp:-49.6degC
At lowest altitude in porpoise (~10000ft):
at 670mb, winds: 333deg, 34kt
40deg11minN, 123deg2minW at 2001 UTC
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February 6 1156 PST |
At 40deg15minN, 122deg42minW, 527 mb, porpoising toward pt 7: heading 261deg
Obs: winds:12.4kt, 289deg, air temp:-28.3degC ,dewpt temp:-43.4degC
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February 6 1148 PST |
At 40deg18minN, 122deg31minW, 668 mb, about to turn back at pt 6 for porpoise
Obs: winds: 326deg, 150kt, air temp: -15.1degC ,dewpt temp:-23.9degC
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February 6 1130 PST |
At 40deg2minN, 124deg,9minW, 692 mb, heading to pt 6 at 10000 ft
Obs: winds: 336deg, 35 kt, air temp: -15.5degC ,dewpt temp: -20.7degC
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February 6 1115 PST |
At 39deg55minN, 124deg49minW, 978 mb, heading to pt 6 at 10000 ft
Obs: winds:30kt 342deg, air temp:2.5degC ,dewpt temp: -1.5degC
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February 6 1111 PST |
At 39deg59minN, 124deg30minW, 979 mb, heading: 266deg
Obs: winds: 343deg, 44kt, air temp: 3.7degC ,dewpt temp: 1.0degC
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February 6 1055 PST |
At 40deg45minN, 124deg27minW, 978 mb
Obs: winds:344deg, 30kt, air temp: 4.1degC ,dewpt temp: 0.0degC
At 40deg30minN, 124deg26minW winds at 1000 ft show
a distinct drop-off in speeds (31kt, 340 deg)
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February 6 1040 PST |
At 40deg1minN, 124deg23minW, 978 mb, heading now to pt 3; 352deg
Obs: winds: 341deg, 42kt, air temp: 5.1degC ,dewpt temp:-1.0degC
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February 6 1030 PST |
At 39deg30minN, 124deg13minW, 978 mb
Obs: wind: 336deg, 42 kt, air temp: 5.1deg C ,dewpt temp:-2.2degC
Estimate 40-45 kt at surface based on rough sea state.
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February 6 1000 PST |
During spiral descent at pt 15:
Wind max was at 505mb (72kt, 290deg)
Secondary wind peak: at 705mb, 54kt, 310deg
Winds below 705 mb have steady direction of 340 deg
At 38deg44minN, 124deg13minW, 979 mb, heading to pt 2 at 1000 ft
Obs: winds: 40kt, 340deg, air temp: 5.0degC, dewpt temp: -0.9degC
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February 6 1000 PST |
At 38deg43minN, 124deg5minW, 595mb, heading 271deg
Obs: winds: 73kt, 301deg, air temp: -12.7degC, dewpt temp: -41.6degC
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February 6 0953 PST |
At 38deg47minN, 123deg43minW, 765 mb, heading 268deg
Obs: winds:308deg, 40kt, air temp: -4.8degC ,dewpt temp:-32.4degC
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February 6 0948 PST |
At 38deg47minN, 123deg43minW, 765 mb, heading 268deg
Obs: winds: 308deg, 40kt air temp: -4.8degC ,dewpt temp:-32.4degC
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February 6 0948 PST |
At 38deg51minN, 123deg20minW, 608 mb, heading 267deg
Obs: winds:279deg, 56kt air temp: -12degC ,dewpt temp:-41.5degC
At highest pt of porpoise ( 596 mb), winds inland
were 50kt at 280 deg, air temp: -15degC.
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February 6 0931 PST |
At 39deg1minN, 122deg7minW, 705 mb
heading:270deg , porp manvr from pt 16 to pt 17
Obs: winds:300deg, 26.3kt, ir temp: -4.5degC ,dewpt temp:-25.4degC
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February 6 0925 PST |
At 39deg1minN, 122deg21minW, 784 mb
Obs: winds 311deg, 25kt, air temp -0.6degC ,dewpt temp:-30.7degC
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February 6 0916 PST |
AT 38deg55min, 123deg0min, 784 mb (7000 ft)
Obs: winds 325deg, 36kt, air temp: -0.8degC ,dewpt temp: -34.0degC
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February 6 0904 PST |
At 798 mb (6600 ft), 38deg44minN, 124deg15minW
Obs: winds: 323deg, 40kt, air temp: -2.7degC ,dewpt temp: -15.3degC
Saw winds at 340deg, 42kt at 1000 ft heading
outbound toward pt 15 (38 deg 42', 124 deg 20'). White caps seen on sfc.
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February 6 0849 PST |
At 948 mb, 38deg28minN, 123deg44minW
Obs: winds:335deg, 45kt, air temp: 3.5degC ,dewpt temp: 0.1degC
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February 6 0834 PST |
At 946 mb, 37deg46minN, 123deg4minW
Obs: winds 321deg, 40kt, air temp: 3.9degC, dewpt temp:0.4degC
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February 6 0827 PST |
At 946 mb, 37deg27minN, 122deg47minW:
Obs: winds 326deg, 34kt, air temp 4.1degC, Dewpt temp 0.3degC
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February 6 0818 PST |
At 912 mb, 37deg1minN, 122deg23minW:
Obs: winds 322deg, 35kt, air temp 1.3degC, relative humidity 84%
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February 6 0814 PST |
At 911 mb, 36deg48minN, 122deg13minW:
Obs: winds 327deg, 32kt, air temp 1.5degC
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Status |
Flight Observations |
Forecast Discussion |
Aircraft Status |
Flight Plan |
Soundings Status |
Forecast Discussion |
PACJET IOP 6 Short Term Forecast Discussion
National Weather Service/PACJET Operations Center, Monterey, CA
2230 UTC February 6, 2001
Strong north winds continue along the northern and central coast of
California. The Vorticity maximum associated with this system is moving
south along the coast tonight. The upper level low and vort will move
into southern California tonight and Wednesday morning. A ridge over
the central Pacific will continue the north flow along the west coast.
The 12z runs rapidly diverge on the solution of the next system on
Thursday. The AVN solution is faster and has two distinct organized
areas. The first front brings rain (.10 to .25 )to northern California
just after 00Z Thursday but the front is weak with precipitation staying
in northern California. The second organized structure in the cold air
would move onshore early Friday morning and be the most active with
amounts .5 to 1 inch for the higher terrain. The ETA and MRF solution
look to have the initial front a bit slower. The front reaches the
northern California coast closer to 6z. The ETA/MRF also would have the
initial front stronger and extend south into the San Francisco Bay area
Friday. The ETA/MRF solution would also have a much less defined second
push onto the coast. With late Thursday being the end of the ETA time
frame and allowing another run for the MRF and AVN we will have to wait
until Wednesday morning to see best solution.
Extended models continue to diverge with the biggest agreement in
maintaining some kind of ridge over the central Pacific into next week
with weak short waves moving south along the coast..
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Status |
Flight Observations |
Forecast Discussion |
Aircraft Status |
Flight Plan |
Soundings Status |
Aircraft Status |
February 6 |
Flight scheduled for 0800 PST take-off.
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February 7 |
No flight. Crew change.
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Status |
Flight Observations |
Forecast Discussion |
Aircraft Status |
Flight Plan |
Soundings Status |
Flight Plan |
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Status |
Flight Observations |
Forecast Discussion |
Aircraft Status |
Flight Plan |
Soundings Status |
Sounding Status |
6 February |
Bodega Bay | 18 Z sounding. |
Cazadero | No soundings. |
Oakland | 18 Z sounding requested. |
Reno | No special soundings requested. |
7 February |
Bodega Bay | No soundings. |
Cazadero | No soundings. |
Oakland | No special soundings requested. |
Reno | No special soundings requested. |
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