PACJET Projects |
HMT 2004
PACJET 2003
PACJET 2002
PACJET 2001
CALJET 1998
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PACJET 2001 IOPs |
IOP 1: 20 Jan 2001
IOP 2: 23 Jan 2001
IOP 3: 25 Jan 2001
IOP 4: 31 Jan 2001
IOP 5: 1 Feb 2001
IOP 6: 6 Feb 2001
IOP 7: 9 Feb 2001
IOP 8: 10 Feb 2001
IOP 9: 11 Feb 2001
IOP 10: 12 Feb 2001
IOP 11: 17 Feb 2001
IOP 12: 18 Feb 2001
IOP 13: 21 Feb 2001
IOP 14: 24 Feb 2001
IOP 15: 25 Feb 2001
IOP 16: 1 Mar 2001
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Background |
About Pacjet
CALJET Summary
Societal Impacts and User Input
Linkages to National Priorities
USWRP
Data Assimilation Implementation Plan
March 2001 Program Status Report
PACJET 2001 Poster
NSSL Briefing
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Program Documents |
PACJET and a Long-term Effort
to Improve 0-24 h West Coast Forecasts
Overview Poster
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Research Participants |
NOAA Research
ETL,
NSSL,
FSL,
AL,
CDC
National Weather Service Western Region
Eureka,
Hanford,
Medford,
Monterey,
Oxnard,
Portland,
Reno,
Sacramento,
San Diego,
Seattle,
CNFRC
Office of Marine and Aviation Operations
AOC
Naval Postgradute School
DRI CIASTA
CIRES
SUNY Stony Brook
National Centers for Environmental Prediction
EMC,
HPC,
MPC
National Environmental Satellite, Data
and Information Service
CIMSS,
CIRA
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Operational Forecasting Components |
COMET Presentation
West Coast RUC
Aircraft Obs via AWIPS
GWINDEX Poster
Applications Development
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Research Components |
Modeling Research Components
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Related Experiments |
Winter Storm Reconnaissance (Central Pac.)
CRPAQS (CA Air Quality)
IMPROVE (Microphysics)
THORPEX (Synoptic Targeting)
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Observing Systems |
AEROSONDE
NOAA P-3
Wind Profiler Network
Satellite Products
NOAA S-band Radar
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Contacts |
Program
Media Contacts
Webmaster
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Workshops |
2001 - Monterey, CA
July 13-14 2000 (Boulder, CO)
July Workshop Agenda
September 1999 - Monterey, CA
1999 Planning Workshop Figures
June 1998 - CALJET
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Program Status for 11 February 2001: IOP 09
Status |
Observations |
Forecast Discussion |
Flight Plan |
Aircraft Status |
Soundings Status
Status |
Sunday, February 11 |
Flight in the S. CA area. Take off at 1600 PST.
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Monday, February 12 |
Weather briefing at 0830 PST.
Proposed flight in the S. CA area.
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Tuesday, February 13 |
Hard down day.
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Wednesday, February 14 |
No fly day.
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Status |
Observations |
Forecast Discussion |
Flight Plan |
Aircraft Status |
Soundings Status
Observations |
0436 UTC |
Making drop#10 at pt 8.
At 36degN, 122deg30minW, 465 mb:
winds: 246deg, 39kt
air temp: -34.0degC ,dewpt temp: -54.8degC
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0425 UTC |
Making a drop at
35deg23minN, 121deg53minW, 465mb:
(heading: 304deg at 19500 ft, moving to pt 8)
winds: 247deg, 79kt
air temp: -29.3degC, dewpt temp:-48.7degC
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0422 UTC |
At 35.17N, 121.71W, 500mb:
winds: 250deg, 70kt
air temp: -25.0degC
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0407 UTC |
At 34deg28minN, 121deg7minW, 891 mb:
heading: 325deg at 3500 ft, moving to pt 8.
winds:253deg, 13kt
air temp: 1.9degC ,dewpt temp: 1.5degC
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0402 UTC |
Weak rainband (max echo 35-40) situated
off of San Luis Obispo.
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0346 UTC |
at 33deg30minN, 120deg3minW, 891mb:
heading: 310deg at 3500ft.
winds: 238deg, 16kt
air temp: 4.5degC, dewpt temp: 2.4degC
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0314 UTC |
A tail radar image of a
convective cell (echo max 50 dbz) embedded
within the stratiform rainband shown in
the 0247 image.
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0253 UTC |
At 33deg59minN, 119deg1minW, 977mb:
winds: 189deg, 25kt
air temp: 9.7degC, dewpt temp: 6.8degC
No blocked flow in Bight, winds in Bight are
light (5 kt). Precipitation appears to be
stratiform in nature rather than convective.
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0247 UTC |
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0224 UTC |
at 34deg25minN, 121degW, 979 mb:
heading: 116deg at 1000 ft, going to pt 3
winds: 227deg, 5kt
air temp: 8.3degC, dewpt temp: 5.7degC
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0214 UTC |
at 33deg54minN, 120deg41minW, 978 mb:
heading: 322 deg at 1000ft.
winds: 254deg, 4 kt
air temp: 9.0 degC, dewpt temp: 4.7degC
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0200 UTC |
at 33deg12minN, 120deg4minW, 978mb:
(heading: 322deg at 1000 ft)
winds: 223deg, 21kt
air temp: 9.7degC, dewpt temp: 7.7degC
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0154 UTC |
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0117 UTC |
at 33deg22minN, 120deg20minW, 484 mb:
(heading to drop#8: 155deg at 19000ft)
winds: 253deg, 61kt
air temp: -22.2degC ,dewpt temp: -33.3degC
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0111 UTC |
At 33deg45minN, 120deg42minW, 484 mb
(heading to drop#7: 155deg at 18900 ft)
winds: 249deg, 64kt
air temp: -22.5degC ,dewpt temp: -32.9degC
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0105 UTC |
at 34deg8minN, 121deg4minW, 484 mb
(heading to drop#6: 156deg at 18800 ft)
winds:246deg, 67kt
air temp: -22.8degC ,dewpt temp: -35.7degC
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0059 UTC |
at 34deg29minN, 121deg,25minW, 484 mb:
(heading to drop#5: 156deg, at 18800ft)
winds:246deg, 72kt
air temp: -23.5degC ,dewpt temp: -34.3degC
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0053 UTC |
at 34deg50minN, 121deg47minW, 484mb:
(heading: 156deg, at 18700ft)
winds: 245deg, 73kt
air temp: -23.3degC, dewpt temp: -42.6degC
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0047 UTC |
at 35deg14minN, 122deg10minW, 484 mb:
(moving to drop#3 at 18500ft, heading:157deg)
winds: 246deg, 77kt
air temp: -25.1degC ,dewpt temp: -39.3degC
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0032 UTC |
at 36degN, 123degW (pt 1), 485 mb:
(moving to drop1 pt ,heading: 153deg , at 18,500 ft)
winds: 258deg, 45kt
air temp: -30.0degC ,dewpt temp: -53.6degC
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Status |
Observations |
Forecast Discussion |
Flight Plan |
Aircraft Status |
Soundings Status |
Forecast Discussion |
PACJET IOP 9 Short Term Forecast Discussion
National Weather Service/PACJET Operations Center, Monterey, CA
0430 UTC February 12, 2001
Lightning detection system not reporting but San Luis Obispo reported a
thunderstorm.
Strongest convection south of San Francisco Bay area is in a stationary
line of showers from 35.5/120 to 33.8/122.7 and passes over San Luis
Obispo. Cells are forming in the SE and traveling to the NW with the
highest Dbz values in the mid 40s. San Luis Obispo reporting moderate
rain with .08 last hour. Tops on the line of showers continue to be
low with cloud top temps near the coast -17 to -8C 127 miles off shore.
Rain fall last hour:
Santa Barbara .00
Old Man Mtn NA
Gibralter Dam NA
Carpinteria NA
La Granda Mtn NA
Matilija Cr. NA
Goleta previous hour .01 approximately
Ertl
0330 UTC February 12, 2001
No Lightning strikes on detection system.
Band of mid level clouds is beginning to show
some breaks in the stratus but continues to
progress south with a small band of showers
remaining from San Luis Obispo SW. Band shows
very little progression with cells in the
band slowly moving to the NE.
Main band of showers oriented from NE to SW
is east of Santa Barbara and west of Point
Mugu. Surface winds behind main band of
showers over the Santa Barbara coast
generally light with the strongest winds
southeast of the main band of showers. Winds
at point Mugu south 18G28KT.
Rain fall last hour:
Santa Barbara .01
Old Man Mtn .00
Gibralter Dam .00
Carpinteria .00
La Granda Mtn .16
Matilija Cr. .08
Golita previous hour .03 approximately
Ertl
0230 UTC February 12, 2001
No Lightning strikes on detection system.
00z Goes Winds 700-750mb shows large area of
40kt that corresponds with and parallel to
the mid level stratus band that extends
from Southwest from a San Luis Obispo to LA
line.
Strongest echoes have moved inland and the
lower tops are not showing up on radar until
they get near the coast. Another line of
showers is developing from San Luis Obispo SW
cloud tops in the band -16 to -18C.
Rain fall last hour:
Santa Barbara .02
Old Man Mtn .00
Gibralter Dam .00
Carpinteria .04
La Granda Mtn .20
Matilija Cr. .39
Golita previous hour .00
Ertl
0130 UTC February 12, 2001
No Lightning strikes on detection system.
Main band of showers on Radar has moved east of Santa Barbara with
several small bands moving east behind it.
Back edge of the mid level stratus deck is about 15 miles Northwest of
San Luis Obispo and slowly moving south. Stratus cloud tops within
46 miles of the coast -10 to -15C clouds further from the coast
generally -5 to -10C.
Rain fall last hour:
Santa Barbara .01
Old Man Mtn .00
Gibralter Dam .20
Carpinteria .20
La Granda Mtn .35
Ertl
PACJET Short Term Forecast Discussion
National Weather Service/PACJET Operations Center, Monterey, CA
1300 UTC February 1, 2001
Short Term (Sun - Tue)Discussion
Both Eta and Avn are in good agreement through 48 hours, and the model
initialization looks excellent. Perhaps a direct result of special
soundings/dropsondes related to Pacjet. The cold front along the
Central California coast this morning will continue to drop slowly south
to southeast. Mainly moderate but persistent precipitation across
southern portions of the Santa Lucia Mountains and into the Santa Ynez
Range...with scattered showers further north. Precipitation will
increase across the LA basin tonight as the Upper Low along the Northern
California coast continues its southward movement. Precipitation will be
heavy during the day on Monday near the coast of Southern California.
Favorable orographic flow will be combined with a layer precipitable
water plume with values approaching 1.00 inch. Meso eta shows some
significant instability offshore from LA monday evening. Otherwise the
front will move south into Mexico with gradually decreasing showers
across Southern CA monday night. Ridging offshore will result in
northerly flow along the coast with gradual drying on tuesday.
Long Term (Wed-Sun) Discussion
Decent agreement at 72 hrs. but the medium range models diverge from
there. Three main mid level features through the period will be an
offshore ridge, a trough further west from northern California, and
another trough which is expected to move southeast out of British
Columbia and across Washington. Placement and movement of these
features will make a large difference in future conditions. The Euro
model continues to show the least similarity with the other models, and
looks the least reasonable with dropping the British Columbia trough
almost due south along the pacific northwest coast. So, this time frame
does not look overly active. However, the Avn model at about 20N
latitude shows a distinct change from easterly to westerly flow. This
could be the harbinger of developing a tap of Tropical moisture by next
week.
DW
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Status |
Observations |
Forecast Discussion |
Flight Plan |
Aircraft Status |
Soundings Status
Flight Plan |
|
Status |
Observations |
Forecast Discussion |
Flight Plan |
Aircraft Status |
Soundings Status |
Aircraft Status |
Sunday, February 11 |
Flight in the S. CA area, 1600 PST take off.
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Monday, February 12 |
Proposed flight for the S. CA area.
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Tuesday, February 13 |
Hard down day.
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Wednesday, February 14 |
No fly day.
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Status |
Observations |
Forecast Discussion |
Aircraft Status |
Soundings Status |
Sounding Status |
11 February |
Bodega Bay | Soundings as event develops. |
Cazadero | Soundings as event develops. |
Oakland | Special 3 hr soundings requested 0Z Sunday to 0Z Monday. |
Reno | Special 3 hr soundings requested 12 Z Sunday to 12 Z Monday. |
12 February |
Bodega Bay | No soundings. |
Cazadero | No soundings. |
Oakland | Special 3 hr soundings completed at 0Z Monday. |
Reno | Special 3 hr soundings completed at 12 Z Monday. |
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