…Unsettled weather with chances for excessive rainfall and severe
thunderstorms continues across the Southeast through Saturday…
…Active weather and thunderstorm chances also exist across the northern
Plains tonight before returning to the central Plains on Sunday…
…Sweltering heat continues across South Florida and builds into the
southern High Plains this weekend…
A continued risk of thunderstorms and areas of heavy rain are impacting
parts of the Gulf Coast and Southeast this afternoon after a very wet and
stormy 24 hours for the region. Additional instances of heavy rain and
damaging wind gusts are possible from the central Gulf Coast to southern
Georgia tonight, highlighted by a Slight Risk (level 2/5) of severe
thunderstorms as well as a Moderate Risk (level 3/4) of excessive
rainfall. A frontal boundary lingering from the Southeast to the
north-central Gulf of Mexico on Saturday will lead to newly developing
thunderstorms with the potential for more chances of flash flooding and
damaging wind gusts. Areas of heavy rain and wet weather are also forecast
to continue into Saturday across the Mid-Atlantic and central
Appalachians, where scattered instances of flash flooding are possible. By
the end of the weekend outdoor activities should become more desirable as
shower and thunderstorms chances diminish for most locations in the
Southeast and Mid-Atlantic due to frontal boundaries shifting offshore.
Other notable areas of precipitation include the northern Plains tonight
and central Plains on Sunday. An initial low pressure system churning over
south-central Canada this evening with an attached cold front progressing
across the northern Plains will allow for developing quick-moving showers
and thunderstorms. By Sunday, the upper-level pattern reloads with
troughing digging into the northern Great Basin and strong southerly flow
throughout the Plains. This will allow for thunderstorms to form over the
central High Plains and spread east during the evening hours. The Storm
Prediction Center highlights the greatest chances for severe weather
across parts of Nebraska and Kansas, with a Slight Risk (level 2/5) of
severe thunderstorms issued.
Otherwise, dangerous heat remains across parts of South Florida this
weekend, while anomalous heat builds into much of the Plains and Midwest
as well. High temperatures in South Florida are forecast to reach the
mid-90s, with high humidity leading to heat indices into the triple
digits. Above average temperatures this weekend will also stretch from the
southern Plains to the Midwest and Great Lakes. Highs are anticipated to
range from 10 degrees above average to near 20 degrees above average for
the upper Great Lakes on Saturday. Afternoon max temperatures should reach
the 80s and low 90s for these regions, with triple digits along the Rio
Grande Valley and southern High Plains.
Snell
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php