Harrisburg International to San Francisco International MDT → SFO

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

• SIGMET E19E: thunderstorms (a convective SIGMET) up to 43,000 ft, moving from the southwest at 20 knots, until 2:55 am EDT (06:55 UTC). Over the first 20 nm of the route.
  as issued

  WSUS31 KKCI 120455
  MKCE WST 120455
  CONVECTIVE SIGMET 19E
  VALID UNTIL 0655Z
  CT NY NJ PA DE MD VA DC WV AND DE NJ NY MD CT VA CSTL WTRS
  FROM 20NNW HTO-70SSE HTO-90SE SIE-20WNW LYH-40ESE AIR-20NNW HTO
  AREA EMBD TS MOV FROM 24020KT. TOPS TO FL430.

• SIGMET W14W: thunderstorms (a convective SIGMET) up to 28,000 ft, moving from the southwest at 20 knots, until 2:55 am EDT (06:55 UTC). Over the route from 1784 to 1904 nm out.
  as issued

  WSUS33 KKCI 120455
  MKCW WST 120455
  CONVECTIVE SIGMET 14W
  VALID UNTIL 0655Z
  NV
  FROM 40NW BVL-20WNW ELY-20SSE OAL-40WNW OAL-50NE BAM-40NW BVL
  AREA TS MOV FROM 24020KT. TOPS TO FL280.

• AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 478 nm of the route.
• AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 90 nm of the route.
• AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 20 to 159 nm out.
• AIRMET TANGO 3W: 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 638 to 1196 nm out.
• AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 1166 to 1595 nm out.
• AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 1216 to 1784 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 1296 to 1485 nm out.
• AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1366 to 1864 nm out.
• AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1455 to 1864 nm out.
• AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 1455 nm along the route.
• AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 110 nm of the route.

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 MDT.

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

Not fetched just now.

At SFO when you get there the forecast at the estimated arrival, 6:39 pm PDT (01:39 UTC)

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

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

• 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, 169 nm along the route · a VIP movement · today · ZOB
• 6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 16 nm from the route, 189 nm along the route · a VIP movement · today · ZOB
• 6/7231 Santa Clara, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 UTC 18 nm from the route, at the destination end · drones kept away from a public gathering · until 12 October · ZOA

Daylight

Sunset at MDT 6:32 pm EDT (22:32 UTC), at SFO 6:36 pm PDT (01:36 UTC) (civil twilight ends 7:02 pm PDT (02:02 UTC)). At 120 knots the arrival at SFO is after sunset there (6:36 pm PDT (01:36 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.