Flight planning: Granby-Grand County GNB / KGNB
What a pilot looks at before a flight from or to Granby-Grand County in Granby, Colorado, in plain English: right now VFR: good flying weather, Wind calm. The warnings, reports and winds below come from the government's aviation weather service and the restrictions from the FAA, refreshed every few minutes. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools.
Warnings in force SIGMETs and AIRMETs whose area covers this field
- AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground).
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft.
A SIGMET warns of weather hazardous to all aircraft (thunderstorms, severe turbulence or icing, volcanic ash); an AIRMET of weather that matters to small aircraft and to flying without instruments (moderate turbulence or icing, low cloud, strong surface wind, mountains hidden in cloud). An area is counted when it covers this field's position.
Pilot reports within 100 nautical miles, last three hours, nearest first
- urgent B737 at 7,600 ft, 64 nm west, 9:22 pm MDT (03:22 UTC): remarks: low-level wind shear 45 knots crosswind on final.
as filed, and in English
HDN UUA /OV HDN/TM 0322/FL076/TP B737/RM LLWS 45 KTS CROSSWIND ON FINAL
- Report
- an urgent report filed through HDN
- Where
- over HDN
- Time
- 03:22 UTC
- Height
- at 7,600 ft
- Aircraft
- B737
- Remarks
- low-level wind shear 45 knots crosswind on final
- urgent E75L at 9,000 ft, 68 nm southwest, 10:30 pm MDT (04:30 UTC): remarks: low-level wind shear + 20K 1000-1500 above ground on approach.
as filed, and in English
ASE UUA /OV ASE/TM 0430/FL090/TP E75L/RM LLWS +/- 20K 1000-1500 AGL ON APCH
- Report
- an urgent report filed through ASE
- Where
- over ASE
- Time
- 04:30 UTC
- Height
- at 9,000 ft
- Aircraft
- E75L
- Remarks
- low-level wind shear + 20K 1000-1500 above ground on approach
- urgent B407 at 10,000 ft, 89 nm southeast, 8:13 pm MDT (02:13 UTC): moderate to severe turbulence.
as filed, and in English
COS UUA /OV 10 W COS/TM 0213/FL100/TP B407/TB MDT-SEV
- Report
- an urgent report filed through COS
- Where
- 10 west cos
- Time
- 02:13 UTC
- Height
- at 10,000 ft
- Aircraft
- B407
- Turbulence
- mdt-sev
- CL35 at 41,000 ft, 25 nm west, 8:40 pm MDT (02:40 UTC): remarks: mtw +/-50FT a 15-knot loss of airspeed ZDVWC-05.
as filed, and in English
EGE UA /OV RLG/TM 0240/FL410/TP CL35/RM MTW +/-50FT +/-15KT ZDVWC-05
- Report
- a routine report filed through EGE
- Where
- over RLG
- Time
- 02:40 UTC
- Height
- at 41,000 ft
- Aircraft
- CL35
- Remarks
- mtw +/-50FT a 15-knot loss of airspeed ZDVWC-05
- B38M at 21,500 ft, 29 nm north, 10:33 pm MDT (04:33 UTC): light turbulence up to 25,000 ft, remarks: during the descent flati star ZDVWC-13.
as filed, and in English
DEN UA /OV DEN305065/TM 0433/FL215/TP B38M/TB LGT BLO 250/RM DURD FLATI STAR. ZDVWC-13
- Report
- a routine report filed through DEN
- Where
- 65 nm northwest (305°) of DEN
- Time
- 04:33 UTC
- Height
- at 21,500 ft
- Aircraft
- B38M
- Turbulence
- light below 25,000 ft
- Remarks
- during the descent flati star ZDVWC-13
- B738 at 23,000 ft, 31 nm east, 8:34 pm MDT (02:34 UTC): moderate turbulence, remarks: during the climb ZDVWC-05.
as filed, and in English
DEN UA /OV DVV270030/TM 0234/FL230/TP B738/TB MOD /RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 30 nm west (270°) of DVV
- Time
- 02:34 UTC
- Height
- at 23,000 ft
- Aircraft
- B738
- Turbulence
- moderate
- Remarks
- during the climb ZDVWC-05
- A320 descending, 60 nm east, 9:19 pm MDT (03:19 UTC): no turbulence up to 10,000 ft.
as filed, and in English
DEN UA /OV DEN/TM 0319/FLDURD/TP A320/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 03:19 UTC
- Height
- during the descent
- Aircraft
- A320
- Turbulence
- no below 10,000 ft
- B737 descending, 60 nm east, 8:29 pm MDT (02:29 UTC): no turbulence up to 10,000 ft.
as filed, and in English
DEN UA /OV DEN/TM 0229/FLDURD/TP B737/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 02:29 UTC
- Height
- during the descent
- Aircraft
- B737
- Turbulence
- no below 10,000 ft
- BE20 at 16,000 ft, 90 nm west, 9:28 pm MDT (03:28 UTC): light chop turbulence, light rime icing, -3 °C, remarks: ZDVWC-11.
as filed, and in English
RIL UA /OV RIL/TM 0328/FL160/TP BE20/TA M03/TB LGT CHOP/IC LGT RIME/RM ZDVWC-11
- Report
- a routine report filed through RIL
- Where
- over RIL
- Time
- 03:28 UTC
- Height
- at 16,000 ft
- Aircraft
- BE20
- Temperature
- −3 °C
- Turbulence
- light chop
- Icing
- light rime
- Remarks
- ZDVWC-11
What pilots in the air told air traffic control or Flight Service: turbulence, icing, cloud tops and bases, temperature, wind, and whatever they remarked on (wind shear on final, a smooth ride). An urgent report is one of severe turbulence or icing, wind shear, or similar. Open "as filed, and in English" for the coded report and its translation line by line.
Winds and temperatures aloft forecast point DEN, 59 nm east of the field · for use 02:00–09:00 UTC
| Height | Wind from | Speed | Temperature |
|---|---|---|---|
| 9,000 ft | 240° (southwest) | 21 knots | 14 °C |
| 12,000 ft | 250° (west) | 44 knots | 6 °C |
| 18,000 ft | 220° (southwest) | 49 knots | -8 °C |
| 24,000 ft | 220° (southwest) | 49 knots | -21 °C |
| 30,000 ft | 230° (southwest) | 54 knots | -30 °C |
| 34,000 ft | 240° (southwest) | 57 knots | -35 °C |
| 39,000 ft | 240° (southwest) | 49 knots | -45 °C |
Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; the lowest rows are left out where the ground is already that high.
Temporary flight restrictions within 50 nautical miles, from the FAA's list
No temporary flight restriction within 50 nautical miles right now.
Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (a closed runway, lights out, a crane) are not shown here: the FAA's notice search is not open to sites like this one at this time, and the application for the FAA's data feed is in hand.
Radar and forecast charts government pictures, the latest each time the page loads
The radar pictures come from the National Weather Service (the nearest radar, then the region); the surface analysis and the 12- and 24-hour forecast charts from the Weather Prediction Center. They are public-domain government images shown as they are published.
Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft), the National Weather Service radar, the Weather Prediction Center's charts, and the FAA's temporary flight restriction list and shapes. Fetched when the page is viewed and kept a few minutes. Back to Granby-Grand County, where the current observation and the forecast for the field are.