BBS: TELESC.NET.BR Assunto: HVYRAIN: Excessive Rainfall Discussion De: COD Weather Processor Data: Fri, 20 Mar 2026 07:18:19 +0000 ----------------------------------------------------------- FOUS30 KWBC 200718 QPFERD Excessive Rainfall Discussion NWS Weather Prediction Center College Park MD 318 AM EDT Fri Mar 20 2026 Day 1 Valid 12Z Fri Mar 20 2026 - 12Z Sat Mar 21 2026 ...THERE IS A MARGINAL RISK OF EXCESSIVE RAINFALL FOR PORTIONS OF WESTERN WASHINGTON STATE... At the beginning of the forecast period, a stubborn atmospheric=20 river is forecast to weaken as a surface low and attendant cold=20 front progress eastward into the Pacific Northwest. Even so,=20 moderate IVT values on the order of 500-700 kg/m * s directed into=20 the WA coastline from 12-18Z should maintain the threat of locally=20 heavy rainfall ahead of the front. While hourly rainfall rates will likely remain below 0.5 inches per hour, isolated instances of=20 excessive rainfall remain possible in upslope regions of the=20 Olympics and Cascades owing to antecedent rainfall over the last=20 few days.=20 Asherman Day 2 Valid 12Z Sat Mar 21 2026 - 12Z Sun Mar 22 2026 The probability of rainfall exceeding flash flood guidance is less than 5 percent. Asherman Day 3 Valid 12Z Sun Mar 22 2026 - 12Z Mon Mar 23 2026 The probability of rainfall exceeding flash flood guidance is less than 5 percent. Asherman Day 1 threat area: https://urldefense.com/v3/__https://www.wpc.ncep.noaa.go= v/qpf/94epoints.txt__;!!DZ3fjg!4-VZRFq4j88jFf1qBF9NP8U_8x0rDWEuob0rQd4lv1dM= Q50U7zN5HmlWsHHbvOBpMO3IG-gbQkbi0UHtDRfd-Fn2fcE$=20 Day 2 threat area: https://urldefense.com/v3/__https://www.wpc.ncep.noaa.go= v/qpf/98epoints.txt__;!!DZ3fjg!4-VZRFq4j88jFf1qBF9NP8U_8x0rDWEuob0rQd4lv1dM= Q50U7zN5HmlWsHHbvOBpMO3IG-gbQkbi0UHtDRfd69zE7r4$=20 Day 3 threat area: https://urldefense.com/v3/__https://www.wpc.ncep.noaa.go= v/qpf/99epoints.txt__;!!DZ3fjg!4-VZRFq4j88jFf1qBF9NP8U_8x0rDWEuob0rQd4lv1dM= Q50U7zN5HmlWsHHbvOBpMO3IG-gbQkbi0UHtDRfdaeF1QCE$=20 =3D =3D =3D To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM. --- SBBSecho 3.28-Linux * Origin: Capitol City Online (1:2320/107) ----------------------------------------------------------- [Voltar]