Note that the likelihood of ≥ 2" diameter hail is "high."There is a moderate threat of winds of 75 mph or higher (65 kt = 75 mph). Its a good afternoon to keep an eye on this developing weather situation.
A major windstorm is forecast for Oklahoma and Texas Sunday. This has the potential to cause widespread power failures. Please prepare now. More information below. 5:35pm: Particularly Dangerous Situation watch due to wind gusts forecast to reach 105 mph and with hail 5" in diameter. Tornadoes also possible. If you live in a mobile home, now is the time to determine your sheltering situation. I urge you to shelter before warnings are issued (spend the evening with friends or family). Power outages are likely. A mobile vehicle from the National Severe Storms Laboratory has already measured a gust of 90 mph! 3:05pm Update: Computer models have consistently increased their forecasts of peak wind gusts pertaining to north central Texas this evening. Wind gusts of 110 mph are possible. If correct, widespread power outages are likely. First Watch of the Day Pertaining to the Derecho In addition to the threat of tornadoes, wind gusts of 80...
It is imperative residents of the central Great Plains use the forecast to prepare for damaging winds and, perhaps, a tornado or two. Tornado Risk The brown area has been moved south into northern Oklahoma and now includes Bartlesville, Ponca City, Enid, and Stillwater, in addition to the cities shown. In Missouri, it includes Joplin and Nevada. Destructive Thunderstorm Winds Here is the color code: Pink and hatched: High risk of destructive winds of 75 mph or stronger. Red and hatched: Enhanced risk of wind gusts of 75 mph or stronger. Yellow: Significant risk of winds 60 mph or stronger. If you live in the red or pink areas, I urge you to prepare for the potential for power outages, some could last a day or more. Bring in lawn furniture or trampolines which could blow about and crash into other objects -- increasing damage. Put your car in the garage or carport.
Radar Image and Commentary as of 10pm (This is the last of the hourly updates for this evening.) Radar image from 10pm. Note the explosion of pink/salmon color from southeast Oklahoma across southern Arkansas. The following (blue) was written at 9p: I am increasingly concerned about more freezing rain over the southeast half of Arkansas than is currently being forecast. If you live in southeast Arkansas, I recommend making ice storm preparations now. Radar, plus ground truth data from Arkansas weather stations, show the icing concern is well-founded. There will be icing during the night in at least part of this area. 10:20pm Note: Some of the weather station's wind measuring instruments have already glazed over in southern Arkansas. Thunderstorms with snow/sleet/freezing rain may occur in OK, AR, TX south of I-40. Ice Storm Warnings in Violet Violet = ice storm warning (rare) Pink = winter storm warning Purple = winter weather advisory Dark Turquoise = wint...
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