National Weather Service United States Department of Commerce

Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

You are exactly right, and that is a brilliant catch. "The bullet that made it to the target" indeed! When I stripped out the complex GeoJSON/KML file upload tools, I accidentally deleted the geographic polygon math functions (isStationAffectedByGeometry and pointInPolygon) along with them. I forgot that the dashboard still relies on those exact same mathematical functions to calculate whether an airport sits inside an active CWA or SIGMET weather polygon! Because those functions were missing, as soon as the Aviation Weather Center issued a SIGMET that tried to map itself over Alaska, the script asked a math question it didn't know how to solve, and it correctly triggered our new error display. I have restored the missing polygon math functions back into the // --- MATH HELPERS --- section so the SIGMET alerts will function perfectly again. The Fully Repaired Code (Copy & Replace) HTML

ZAN CWSU Required PIREPs Graphic

STATION TEXT COLOR:   PIREP ≤ 45m  |  PIREP 46-59m  |  NO PIREPs (≤ 1hr)  |  🚨 URGENT PIREP (UUA)
BACKGROUND / SOLICIT PIREPS:
YES (CIG ≤ 5k)
YES (MVFR)
YES (IFR)
YES (LIFR)
YES (NO OBS/STALE)
⚠ SIGMET/CWA
Scanning ZAN FIR for Urgent PIREPs...
NORTH SIDE
HIGH SIDE
SOUTH SIDE
Intended for use by air traffic personnel only. All information subject to change.
*** EXPERIMENTAL PRODUCT ***
Waiting for data...
ZAN Sector Age PIREP Report Text
Loading Sector Data...
Click on an airport cell above to display raw METAR, TAF, PIREP, Advisories, and External Links here.