St. Louis Lambert International to Cyril E King Airport STL → STT

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

• SIGMET E28E: thunderstorms (a convective SIGMET) up to 40,000 ft, moving from the west at 20 knots, until 4:55 am CDT (09:55 UTC). Over the route from 827 to 877 nm out.
  as issued

  WSUS31 KKCI 120755
  MKCE WST 120755
  CONVECTIVE SIGMET 28E
  VALID UNTIL 0955Z
  FL GA CSTL WTRS
  FROM 190SE CHS-240SSE ILM-210ENE TRV-150ENE TRV-190SE CHS
  AREA TS MOV FROM 26020KT. TOPS TO FL400.
  REF INTL SIGMET LIMA SERIES.

• AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist, fog). Over the route from 229 to 379 nm out.
• AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 329 to 399 nm out.
• AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Over the route from 369 to 438 nm out.
• AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Over the route from 379 to 438 nm out.
• AIRMET TANGO 3W: moderate turbulence above 18,000 ft (due to mountain wave) from 30,000 ft to 41,000 ft. Over the route from 578 to 658 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 STL.

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

• UAL1162 at 36,000 ft, 46 nm northeast, 1:16 am CDT (06:16 UTC): -46 °C, wind 210° at 20 knots. 1026 nm along the route, 46 nm northeast of the line.
  as filed, and in English

  ARP UAL1162 2815N 7407W 0616 F360 MS46 210/020KT

  Report

  a routine report filed through ARP

At STT when you get there the forecast at the estimated arrival, 4:50 pm AST (20:50 UTC)

Wind from the east-southeast at 10 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,500 feet VFR

The whole forecast for STT

• From Mon 2:00 am AST (06:00 UTC): wind from the east at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 5,000 feet
• From Mon 9:00 am AST (13:00 UTC): wind from the east-southeast at 10 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,500 feet
• From Mon 7:00 pm AST (23:00 UTC): wind from the east at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, scattered clouds at 5,000 feet

The forecast for STL, the departure

• From Mon 1:00 am CDT (06:00 UTC): wind from the south-southwest at 7 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
• From Mon 11:00 am CDT (16:00 UTC): wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, a few clouds at 25,000 feet
• From Mon 6:00 pm CDT (23:00 UTC): wind from the southwest at 8 knots, visibility more than 6 miles, a few clouds at 25,000 feet

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

• 6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 10 nm from the route, 229 nm along the route · security · until 1 August · ZME
• 6/2698 VIEQUES, PR, Monday, January 19, 2026 through Friday, December 18, 2026 UTC 20 nm from the route, at the destination end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 18 December · ZSU

Daylight

Sunset at STL 6:27 pm CDT (23:27 UTC), at STT 5:59 pm AST (21:59 UTC) (civil twilight ends 6:21 pm AST (22:21 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.