Storm Potential Overnight, Flooding Rainfall Saturday, Windy and Cool Sunday
5:00 p.m. Friday 28 April 2017
The “Cap” has remained strong today, but there’s still enough instability to provoke a few thunderstorms this evening. While the overall chance for rain is low at just 30 percent through midnight, any storms that form may become severe.
A heavy rainfall event evolves late tonight in the north and west and spreads eastward Saturday as deep moisture flow interacts with a slow-moving cold front and very powerful upper level low. Flood Watches are posted for all of our southern Oklahoma counties; a flood threat also exists in north Texas but total amounts will probably be a bit lower. A few severe storms will still be possible Saturday, mainly in the form of hail cores, but the biggest weather threat on Saturday will be heavy rainfall, three to five inches in the central and west to 7” in the east.
Rain ends early Sunday as this system moves away, but wrap-around clouds may be slow to clear so I’ll keep Sunday mostly cloudy, very windy and quite chilly.
Warmer winds return Mon-Tue, another front brings a quick shot of rain Wednesday.
Here are the numbers:
Tonight: 30% Thunderstorms SE to 60% NW late, a few severe….Lows near 70
Saturday: 90% thunderstorms, heavy rainfall...Highs 80 east to 72 west
Sunday: Mostly cloudy, windy and cool…..50/60
Monday: Sunny skies…..46/78
Tuesday: Mostly sunny…..57/80
Wednesday: 50% Thunderstorms cooler…..64/67
Thursday: Partly cloudy, windy 50/70
Friday: Sunny skies…..48/76
News 12 / Weather Authority
|Lake Texoma Temp||66|
|Grayson County Airport Observed High||83|
|Grayson County Airport Observed Low||61|
|Rain: Sherman-Denison (NTRA)||0.00|
|Ardmore Observed Low||59|
|SunRise||April 28, 2017: 6:40 a.m.|
|SunSet||April 28, 2017: 8:08 p.m.|