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.

18:56:57 UTC

KPTW SIGMET
Heritage Field Airport
Pottstown, Pennsylvania, USA
Convective SIGMET
Valid From
Jan-17 @ 17:55 UTC

Valid To
Jan-17 @ 19:55 UTC

Hazard
Convective

WSUS31 KKCI 171755 SIGE CONVECTIVE SIGMET...NONE OUTLOOK VALID 171955-172355 TS ARE NOT EXPD TO REQUIRE WST ISSUANCES.