Skip Navigation Linkweather.gov 
NOAA logo-Select to go to the NOAA homepage National Weather Service Forecast Office   NWS logo-Select to go to the NWS homepage
Honolulu, Hawai`i

Local forecast by
"City, St" or Zip Code
  
   RSS FeedsRSS Feeds
Current Hazards
   Hawai`i
   Tropical Cyclones
   Tsunami
   National
Current Conditions
   Observations
   Radar
   Satellite
   Hydrology
   River & Lake AHPS
   Analyses/Forecasts
Forecasts
   Activity Planner
   Hawai`i
   Marine
   Aviation
   Fire Weather
   Local Graphics
   National Graphics
   Model Output
Climate
   Local
   National
   More...
Weather Safety
   Weather Radio
   Weather & Safety
   Tsunami Information
   Event Summaries
   Skywarn Spotters
   Weather in Hawaii
   Turn Around,
      Don't Drown

   StormReady
   TsunamiReady
   EMWIN
About Us
   Our Mission
   Our Office
   Our Products
   News Items
   Hawaii RSS FeedsHI RSS Feeds
   Widgets
Contact Us
   Webmaster
   FAQ
Pacific Region Links
   Regional HQ
   Central Pacific
      Hurricane Center

   WFO Guam
   WSO Pago Pago
   Pacific Tsunami
      Warning Center

   International
      Tsunami
      Information
      Center

   Pacific ENSO
      Application
      Center


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services
Follow the National Weather Service on Facebook
NWS on Facebook
Follow the National Weather Service on Twitter
NWS on Twitter
Weath
er-Ready Nation
Weather-Ready Nation

Route Forecast - Addition of Wind Component Outlook

WFO Honolulu issues a route forecast (ROFOR) from San Francisco/Santa Barbara to Honolulu twice a day, at 0700 UTC and 1900 UTC (latest ROFOR). In addition to forecasts of winds, temperatures, and weather for zone segments along the routes, the ROFOR also includes a cumulative wind factor component section. The wind factor component section is a cumulative headwind/tailwind calculation based on forecast winds and the flight track along the route.

Pilots need a specific wind factor component to complete a flight to or from California, and will wait for favorable conditions. By adding an outlook forecast, pilots will be able to plan for changes in wind conditions expected over the next several days. Also, they will be able to get an idea of how the forecast is trending by tracking any changes in the wind component outlooks between successive forecasts.

Examples of the old and the new products are included below. If you have any questions about this change, please contact:

John H. Bravender, Aviation Program Manager
National Weather Service
2525 Correa Rd, Suite 250
Honolulu, HI 96822
(808) 973-5282
w-hfo.aviation@noaa.gov

Here is an example of the old product:

FRPN31 PHFO 121841
RFRKSF

WINDS/TEMPERATURES AND WEATHER BY ZONE FOR
ROUTE SFO/HNL VIA 31.3N/140W VALID AT 131200Z
             FLIGHT LEVELS
ZONE FL050   FL100     FL180     FL240     ZONE WEATHER

25 3617 P15  3330 P10  3030 M08  2928 M20  6-8 ST 003/008
26 3617 P12  3311 P10  2614 M08  2513 M20  DO
27 3507 P11  9905 P10  2112 M08  1914 M21  3-5 SCST 003/008
28 1706 P12  1807 P08  1818 M09  1823 M22  4-6 SCST 008/015
29 1514 P12  1515 P06  1719 M10  1623 M23  5-7 SC 012/030
30 1714 P11  1720 P08  1913 M11  1617 M24  5-7 SC 020/040
31 1712 P12  1619 P09  1612 M10  1106 M23  5-7 SCCU 025/060
32 1512 P14  1614 P08  1207 M10  0116 M19  4-6 SCCU 030/080
OVERALL WIND FACTOR COMPONENTS
    P0         M1         M7         M3


ROUTE SBA/HNL VIA 29.5N/140W VALID AT 131200Z
             FLIGHT LEVELS
ZONE FL050   FL100     FL180     FL240     ZONE WEATHER

25 0215 P18  0120 P13  3314 M07  3212 M20  6-8 ST 005/012
26 0219 P13  0107 P10  2308 M08  2109 M20  DO
27 0513 P13  1009 P09  1611 M08  1616 M20  2-4 SCST 008/015
28 1112 P13  1313 P07  1619 M08  1622 M22  2-4 SCST 010/018
29 1414 P12  1515 P07  1719 M10  1622 M23  4-6 SC 015/030
30 1413 P11  1517 P08  1712 M11  1616 M24  5-7 SC 020/040
31 1612 P13  1618 P08  1511 M11  0806 M23  5-7 SCCU 025/060
32 1512 P14  1613 P08  1106 M09  3617 M18  4-6 SCCU 030/080
OVERALL WIND FACTOR COMPONENTS
    P6         P4         M2         P0


SYNOPSIS...SFC HIGH 1029MB NEAR 35N 132W MOVING NE SLOWLY WITH
SURFACE RIDGE EXTENDING TO THE SW JUST N OF SFO/HNL ROUTE. STRONG
HIGH PRESSURE ALOFT OVER EASTERN ZONES. WEAK LOW ALOFT NEAR THE BIG
ISLAND OF HAWAII MOVING W SLOWLY.

$$

Here is an example of the new product with the outlook section:
(differences are highlighted in yellow)

FRPN31 PHFO 121841
RFRKSF

WINDS/TEMPERATURES AND WEATHER BY ZONE FOR
ROUTE SFO/HNL VIA 31.3N/140W VALID AT 131200Z
             FLIGHT LEVELS
ZONE FL050   FL100     FL180     FL240     ZONE WEATHER

25 3617 P15  3330 P10  3030 M08  2928 M20  6-8 ST 003/008
26 3617 P12  3311 P10  2614 M08  2513 M20  DO
27 3507 P11  9905 P10  2112 M08  1914 M21  3-5 SCST 003/008
28 1706 P12  1807 P08  1818 M09  1823 M22  4-6 SCST 008/015
29 1514 P12  1515 P06  1719 M10  1623 M23  5-7 SC 012/030
30 1714 P11  1720 P08  1913 M11  1617 M24  5-7 SC 020/040
31 1712 P12  1619 P09  1612 M10  1106 M23  5-7 SCCU 025/060
32 1512 P14  1614 P08  1207 M10  0116 M19  4-6 SCCU 030/080
OVERALL WIND FACTOR COMPONENTS
    P0         M1         M7         M3

ROUTE SFO/HNL VIA 31.3N/140W...OUTLOOK OVERALL WIND FACTOR COMPONENTS VALID AT P1 M2 M6 M2 14/1200Z P2 M3 M5 M1 15/1200Z P3 M4 M4 P0 16/1200Z
ROUTE SBA/HNL VIA 29.5N/140W VALID AT 131200Z FLIGHT LEVELS ZONE FL050 FL100 FL180 FL240 ZONE WEATHER 25 0215 P18 0120 P13 3314 M07 3212 M20 6-8 ST 005/012 26 0219 P13 0107 P10 2308 M08 2109 M20 DO 27 0513 P13 1009 P09 1611 M08 1616 M20 2-4 SCST 008/015 28 1112 P13 1313 P07 1619 M08 1622 M22 2-4 SCST 010/018 29 1414 P12 1515 P07 1719 M10 1622 M23 4-6 SC 015/030 30 1413 P11 1517 P08 1712 M11 1616 M24 5-7 SC 020/040 31 1612 P13 1618 P08 1511 M11 0806 M23 5-7 SCCU 025/060 32 1512 P14 1613 P08 1106 M09 3617 M18 4-6 SCCU 030/080 OVERALL WIND FACTOR COMPONENTS P6 P4 M2 P0
ROUTE SBA/HNL VIA 29.5N/140W...OUTLOOK OVERALL WIND FACTOR COMPONENTS VALID AT P5 P3 M1 M1 14/1200Z P4 P2 P0 M2 15/1200Z P3 P1 P1 M3 16/1200Z
SYNOPSIS...SFC HIGH 1029MB NEAR 35N 132W MOVING NE SLOWLY WITH SURFACE RIDGE EXTENDING TO THE SW JUST N OF SFO/HNL ROUTE. STRONG HIGH PRESSURE ALOFT OVER EASTERN ZONES. WEAK LOW ALOFT NEAR THE BIG ISLAND OF HAWAII MOVING W SLOWLY. $$