• HVYRAIN: Excessive Rainfall Discussion...updated

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Jan 10 10:57:55 2026
    FOUS30 KWBC 101057 AAA
    QPFERD

    Excessive Rainfall Discussion...UPDATED
    NWS Weather Prediction Center College Park MD
    557 AM EST Sat Jan 10 2026

    Day 1
    Valid 12Z Sat Jan 10 2026 - 12Z Sun Jan 11 2026

    ...THERE IS A MARGINAL RISK OF EXCESSIVE RAINFALL ACROSS PORTIONS
    OF THE SOUTHERN APPALACHIANS TO THE GULF COAST...


    Update:

    Expanded the Marginal Risk area southwest from the initial issuance
    based on radar and satellite trends suggesting the risk of
    excessive rainfall will persist beyond 12Z. Confined the expanded
    Marginal risk along the axis of highest dew[point ahead of a cold
    front moving eastward. Signals still suggest a downward trend=20
    fairly early in the day. For additional details...refer to WPC
    Mesoscale Precipitation Discussion 0013.

    Bann

    Previous Discussion...

    Heavy rainfall should be on-goingacross portions of the Southern
    Appalachians as the Day 1 period. Some of that rainfall will be
    falling on at least partially saturated ground which has the
    potential to produce flash flooding. The expectation is that the
    threat for excessive rainfall should wane by 18Z today as the area
    of rain moves out of the region.

    Bann

    Day 2
    Valid 12Z Sun Jan 11 2026 - 12Z Mon Jan 12 2026

    The probability of rainfall exceeding flash flood guidance is less
    than 5 percent.

    Bann

    Day 3
    Valid 12Z Mon Jan 12 2026 - 12Z Tue Jan 13 2026

    The probability of rainfall exceeding flash flood guidance is less
    than 5 percent.

    Bann


    Day 1 threat area: https://urldefense.com/v3/__https://www.wpc.ncep.noaa.go= v/qpf/94epoints.txt__;!!DZ3fjg!_7HkWvD0kOm_VhtSUJt0xs31nA69peNMvSFptqaRKe4P= OBiSKO5R0ae7EVfmtbQHB8ZDBXroMJ7m2nEzPL3D5CRyidU$=20
    Day 2 threat area: https://urldefense.com/v3/__https://www.wpc.ncep.noaa.go= v/qpf/98epoints.txt__;!!DZ3fjg!_7HkWvD0kOm_VhtSUJt0xs31nA69peNMvSFptqaRKe4P= OBiSKO5R0ae7EVfmtbQHB8ZDBXroMJ7m2nEzPL3DVzzG3T4$=20
    Day 3 threat area: https://urldefense.com/v3/__https://www.wpc.ncep.noaa.go= v/qpf/99epoints.txt__;!!DZ3fjg!_7HkWvD0kOm_VhtSUJt0xs31nA69peNMvSFptqaRKe4P= OBiSKO5R0ae7EVfmtbQHB8ZDBXroMJ7m2nEzPL3DH8W-bVs$=20

    =3D =3D =3D
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    * Origin: Capitol City Online (1:2320/105)