TZUTC: 0000   
   MSGID: 167752.weather@1:2320/105 2dac7945   
   PID: Synchronet 3.21a-Linux master/123f2d28a Jul 12 2025 GCC 12.2.0   
   TID: SBBSecho 3.28-Linux master/123f2d28a Jul 12 2025 GCC 12.2.0   
   BBSID: CAPCITY2   
   CHRS: ASCII 1   
   FORMAT: flowed   
   AWUS01 KWNH 190209   
   FFGMPD   
   ORZ000-WAZ000-190807-   
      
   Mesoscale Precipitation Discussion 1266   
   NWS Weather Prediction Center College Park MD   
   907 PM EST Thu Dec 18 2025   
      
   Areas affected...portions of western Oregon and southwestern   
   Washington State   
      
   Concerning...Heavy rainfall...Flash flooding possible   
      
   Valid 190207Z - 190807Z   
      
   Summary...Flood/flash flood potential continues as a strong   
   atmospheric river traverses the area through 08Z/midnight Pacific   
   Time.   
      
   Discussion...Flood/flash flood potential continues across the   
   discussion area.  A strong, landfalling atmospheric river   
   continues to produce areas of 0.25-0.5 inch/hr rain rates across   
   the region - highest across upwind, terrain-favored areas.  This   
   heavy rainfall regime has persisted for some time, resulting in   
   around 1-3 inches of rainfall over the past 12 hours.  These rain   
   rates have contributed to at least isolated instances of excessive   
   runoff and impacts in some areas.  Soils are wet and streamflows   
   are high across the region - especially where the heaviest   
   rainfall has occurred.   
      
   Models/observations suggest that at least another 3-5 hours of   
   rainfall is expected across the discussion area, with 0.25+   
   inch/hr rain rates and 1-1.5 inch totals potentially occurring   
   through 08Z/midnight Pacific Time.  Over time, a front will   
   migrate from northwest to southeast across the discussion area,   
   resulting in a gradual southeastward shift in the heaviest   
   rainfall rates as peak low-level flow shifts toward central and   
   southwestern Oregon.  Areas of flooding/flash flooding remain   
   possible given the sensitive ground conditions that are readily   
   supporting excessive runoff.   
      
   Cook   
      
   ...Please see https://urldefense.com/v3/__http://www.wpc.ncep.noaa.gov__;!!=   
   DZ3fjg!_X7D6LBwyUIHGeozsPitQ2wTaN1VLJ2UMr87Cg64CYGoqaeZGBU2fXqJmKxikY9qKDSi=   
   aP51iJ_xHhCZfbG7AsZ1cSk$  for graphic product...   
      
   ATTN...WFO...MFR...PDT...PQR...SEW...   
      
   ATTN...RFC...PTR...NWC...   
      
   LAT...LON   47402191 47322132 46512095 45332117 44172139=20   
               43472199 43212283 43812402 43902436 46612426=20   
               46422320 46132280 46082242 46922217=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 (1:2320/105)   
   SEEN-BY: 1/19 100 16/0 19/10 37 104/119 105/81 106/201 114/10 120/302   
   SEEN-BY: 123/130 128/187 129/14 142/104 153/757 7715 154/10 30 50   
   SEEN-BY: 154/110 700 201/0 203/0 218/700 840 220/10 20 30 90 221/1   
   SEEN-BY: 221/6 360 226/18 30 44 50 227/114 229/110 134 206 300 307   
   SEEN-BY: 229/317 400 426 428 470 664 700 705 240/5832 266/512 280/5003   
   SEEN-BY: 291/111 301/1 320/119 219 319 2119 322/757 762 326/101 335/364   
   SEEN-BY: 341/66 342/200 396/45 423/81 460/58 633/280 712/848 902/26   
   SEEN-BY: 2320/0 105 304 3634/12 5020/400 5075/35   
   PATH: 2320/105 154/10 221/6 1 320/219 229/426