Mineta San Jose International to Waukegan Ntl Airport SJC → UGN

Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of

• SIGMET W22W: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the south at 35 knots, until 5:55 am PDT (12:55 UTC). Near the route, 419 nm along the route.
  as issued

  WSUS33 KKCI 121055
  MKCW WST 121055
  CONVECTIVE SIGMET 22W
  VALID UNTIL 1255Z
  AZ UT NV
  FROM 40W DTA-40WNW HVE-20SSE BCE-50NE LAS-70ENE BTY-40W DTA
  AREA TS MOV FROM 20035KT. TOPS TO FL300.

• AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 180 nm of the route.
• AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 80 to 130 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 240 to 769 nm out.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 250 to 739 nm out.
• AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 329 to 689 nm out.
• AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 499 to 868 nm out.
• 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). Over the route from 649 to 938 nm out.
• AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 699 to 838 nm out.
• AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 739 nm along the route.
• AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 938 to 1078 nm out.
• AIRMET TANGO 2W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the route from 1048 to 1437 nm out.

A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from SJC.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

• A35K at 32,000 ft, 47 nm northwest, 1:39 am PDT (08:39 UTC): moderate chop turbulence, remarks: fdcs zoa. At the departure end, 47 nm northwest of the line.
  as filed, and in English

  OAK UA /OV OAK348024/TM 0839/FL320/TP A35K/TB MOD CHOP/RM FDCS ZOA

  Report

  a routine report filed through OAK

  Where

  24 nm north (348°) of OAK

  Time

  08:39 UTC

  Height

  at 32,000 ft

  Aircraft

  A35K

  Turbulence

  moderate chop

  Remarks

  fdcs zoa

• B739 at 34,000 ft, 42 nm north, 3:58 am PDT (10:58 UTC): no turbulence. At the destination end, 42 nm north of the line.
  as filed, and in English

  UES UA /OV BAE/TM 1058/FL340/TP B739/TB NEG

  Report

  a routine report filed through UES

  Where

  over BAE

  Time

  10:58 UTC

  Height

  at 34,000 ft

  Aircraft

  B739

  Turbulence

  none

At UGN when you get there the forecast at the estimated arrival, 3:47 pm CDT (20:47 UTC)

UGN has no terminal forecast; use the nearest airport that does.

The forecast for SJC, the departure

• From Mon 5:00 am PDT (12:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 8,000 feet, a few clouds at 10,000 feet
• From Mon 1:00 pm PDT (20:00 UTC): wind from the northwest at 8 knots, visibility more than 6 miles, clear skies

Temporary flight restrictions on the line or within 25 nm of it

• 6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 18 nm from the route, 100 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA

Daylight

Sunset at SJC 6:33 pm PDT (01:33 UTC), at UGN 6:14 pm CDT (23:14 UTC) (civil twilight ends 6:42 pm CDT (23:42 UTC)).

Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.