by w-nws.webmaster@noaa.gov | Sep 22, 2023 | Weather and Emergency Alerts
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 AM EDT SATURDAY... * WHAT...Large breaking waves up to 5 feet in the surf zone. * WHERE...Coastal Colleton and Charleston Counties. * WHEN...Until 4 AM EDT Saturday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion.
by w-nws.webmaster@noaa.gov | Sep 22, 2023 | Weather and Emergency Alerts
...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY FOR LAKE MOULTRIE... * WHAT...Northwest winds 10 to 20 knots with gusts up to 30 knots and waves 1 to 2 feet. * WHERE...Lake Moultrie. * WHEN...Until 8 AM EDT Saturday.
by w-nws.webmaster@noaa.gov | Sep 22, 2023 | Weather and Emergency Alerts
...LAKE WIND ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO NOON EDT SATURDAY... * WHAT...North winds 15 to 20 knots with gusts of 30 to 35 knots expected. * WHERE...Portions of central South Carolina. * WHEN...From 8 PM this evening to noon EDT Saturday.
by w-nws.webmaster@noaa.gov | Sep 22, 2023 | Weather and Emergency Alerts
...LAKE WIND ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 8 AM EDT SATURDAY... * WHAT...North winds 15 knots with gusts up to 30 knots expected. * WHERE...Sumter, Clarendon and Southeastern Orangeburg Counties. * WHEN...From 8 PM this evening to 8 AM EDT Saturday. * IMPACTS...Strong winds and rough waves on area lakes will
by SPC Forecast Products | Sep 22, 2023 | Weather and Emergency Alerts
SPC 0730Z Day 3 Outlook
Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0219 AM CDT Fri Sep 22 2023
Valid 241200Z - 251200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE SOUTHERN PLAINS...
...SUMMARY...
Thunderstorms, associated with large hail and wind damage, will be
possible on Sunday from parts of central Texas northeastward into
southeast Oklahoma.
...Southern Plains/Ark-La-Tex...
A shortwave trough is forecast to move eastward across the southern
Plains on Sunday. A cold front will likely advance southward into
west-central and north Texas by afternoon. Warming surface
temperatures ahead of the front will result in moderate to strong
destabilization by afternoon, with MLCAPE expected to peak in the
2000 to 3000 J/kg range in many areas south of the front. As
instability and low-level convergence increase near the front,
scattered thunderstorms will likely form in the mid to late
afternoon. These storms will move southeastward into the stronger
instability across north-central and northeast Texas, with several
cell clusters persisting into the early to mid evening.
Forecast soundings by 00Z/Monday near and to the southwest of the
Dallas/Fort Worth Metroplex show moderate deep-layer shear and steep
low to mid-level lapse rates. The moderate deep-layer shear is
mostly due to mid-level speed shear, although some directional shear
is evident in the low levels. 700-500 mb lapse rates are forecast to
be near 8 C/km. This environment should support supercells
associated with isolated large hail. Large temperature-dewpoint
spreads will result in high storm bases, and a nearly adiabatic
lapse rate below 850 mb will contribute to downdraft acceleration.
As a result, a wind-damage threat is also expected to develop during
the late afternoon and early evening. The cold front is forecast to
be a bit faster than some of the model solutions are suggesting. For
this reason, the faster model solutions are favored and the slight
risk has been placed accordingly.
..Broyles.. 09/22/2023
Read more
by SPC Forecast Products | Sep 22, 2023 | Weather and Emergency Alerts
No Mesoscale Discussions are in effect as of Fri Sep 22 07:22:02 UTC 2023.
