Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
231 PM EDT Mon Aug 30 2021

Valid 00Z Tue Aug 31 2021 - 00Z Thu Sep 02 2021

...Widespread heavy rains and significant flooding likely from portions of
the Gulf Coast, through the Tennessee Valley, Upper Ohio Valley, Central
Appalachians, Mid-Atlantic and far southern New England as Ida continues
to push northeast...

...Tropical moisture from the remnants of Nora will bring heavy rains and
flash flooding threats to the Southwest...

...Windy conditions will pose a fire weather threat from Northern
California into the Northern Great Basin and Pacific Northwest...


While the winds with Ida are expected to continue to weaken as it presses
northeastward, the heavy rains and flooding threat will be unabated over
the next two days.  Widespread heavy rains are likely from portions of the
Central Gulf coast, through the Tennessee Valley Upper Ohio Valley,
Central Appalachians, Mid-Atlantic and far southern New England.  Across
much of these regions rainfall totals of 3-8 inches are expected,
resulting in the potential for life threatening flash flooding and river
flooding over the next two days.  The heaviest overall storm totals with
Ida will likely be along the central Gulf coastal regions where totals in
excessive of a foot will be common.  In addition to the heavy rain and
flooding threat, severe weather is possible over the next two days across
portion of the central to eastern Gulf coast into the Southeast with the
greatest threat being from tornadoes and high winds.

A tropical heavy rain threat also on tap for portions of the Southwest
from southeast California, into Arizona, far southern Nevada, Utah,
western Colorado and western New Mexico.  Much above average tropical
moisture from the remnants of Nora that moved into the western Mexican
coast, will stream northward into the Southwest.  Scattered thunderstorms
will begin in this moist tropical airmass Monday afternoon, becoming more
widespread Tuesday and Wednesday.  This will result in the potential for
widespread heavy precipitation totals and an increasing threat of flash
flooding over the next two days.

The tropical moisture from Nora will not be reaching areas of Central to
Northern California, the Northern Great Basin and Pacific Northwest that
continue to experience Extreme to Exceptional drought conditions.  A
strong front forecast to push from the Pacific Northwest into the Northern
Great Basin and Northern Rockies region will have little if any
precipitation with it.  However, strong winds associated with this front
will raise the fire weather threat from northeast portions of California,
into portions of the Northern Great Basin, Pacific Northwest and Northern
Rockies. This front will, however, provide cooler than average
temperatures over the next two days across the Northwest.  Below average
temperatures also expected where there is the aforementioned heavy rains
threat across the Southwest and large portions of the east.

Oravec