Area Forecast Discussion
Issued by NWS Omaha/Valley, NE

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000 FXUS63 KOAX 220912 AFDOAX Area Forecast Discussion National Weather Service Omaha/Valley NE 312 AM CST Wed Feb 22 2017 .SHORT TERM...
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(today through Friday) Issued at 305 AM CST Wed Feb 22 2017 Sharp transition from spring-like conditions at the start of the period to significant winter weather by Friday. Mild air was still in place across the area early this morning with temperatures at 08Z in the 40s and 50s. Temperatures today will again be well above normal with another day of record or near record highs for the south half of the area. Although northern areas will still be on the mild side, a cold front will move through eastern Nebraska and southwest Iowa during the day with cooler air spreading south behind the front. A pool of colder air will be poised to the north across the northern plains and will drop south tonight on the back side of an upper trough moving into the Great Lakes region. The leading edge of the colder air will reach northern Nebraska by Thursday morning. Clouds will be increasing during the day along with the chance of precipitation as a late winter storm system begins to organize over the western high plains. A strong baroclinic zone will develop near the southern Nebraska border by Thursday afternoon as surface low pressure deepens over northwest Kansas. North of this boundary rain will become widespread across the area during the day Thursday with a mix of rain and snow initially in parts of northeast Nebraska. There will also be a chance of thunderstorms in southeast Nebraska and southwest Iowa early Thursday evening. Strong vertical motion fields resulting from isentropic lift and the approaching upper wave will result in moderate to heavy snow possible at times across parts of northeast Nebraska Thursday night into Friday. A winter storm watch has been issued for the northern two tiers of counties for this time period where there will be the potential for up to a foot of snow along with strong north to northwest winds. Snow will spread south and east during the day on Friday with a mix of rain and snow expected for much of southeast Nebraska and southwest Iowa before changing to all snow during the late afternoon with light snow extending into Friday evening. Snowfall across the south half of the area is expected to range from less than an inch up to 4 inches by late Friday night. .LONG TERM...(Friday night through Tuesday) Issued at 305 AM CST Wed Feb 22 2017 Colder temperatures will be around for the weekend behind the departing winter storm with snow covered areas seeing the coldest temperatures. Warming trend returns for the early part of next week with snow free areas in the south likely approaching 60 degrees by Tuesday.
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&& .AVIATION...(For the 06Z TAFS through 06Z Wednesday night) Issued at 1136 PM CST Tue Feb 21 2017 VFR conditions are expected through the TAF cycle. Surface winds will become northwest Wednesday morning as a cold front pushes through the region. Some gusty winds to 25kts are possible in the afternoon but should subside by evening. && .OAX WATCHES/WARNINGS/ADVISORIES...
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NE...Winter Storm Watch from Thursday evening through Friday afternoon for NEZ011-012-015>018. IA...None.
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&& $$ SHORT TERM...Fobert LONG TERM...Fobert AVIATION...Kern

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