CheckWX is a tool to help pilots better visualize weather data.  It is not intended as a substitute for an official pre-flight weather briefing.

19:31:04 UTC

4PS2 SIGMET
Sci Graterford Heliport
Graterford, Pennsylvania, USA
Convective SIGMET
Valid From
Feb-18 @ 17:55 UTC

Valid To
Feb-18 @ 19:55 UTC

Hazard
Convective

WSUS31 KKCI 181755 SIGE CONVECTIVE SIGMET...NONE OUTLOOK VALID 181955-182355 TS ARE NOT EXPD TO REQUIRE WST ISSUANCES.

Convective SIGMET
Valid From
Feb-18 @ 18:55 UTC

Valid To
Feb-18 @ 20:55 UTC

Hazard
Convective

WSUS31 KKCI 181855 SIGE CONVECTIVE SIGMET...NONE OUTLOOK VALID 182055-190055 TS ARE NOT EXPD TO REQUIRE WST ISSUANCES.