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KF5JRV > WX 23.03.17 13:24l 57 Lines 2628 Bytes #999 (0) @ USA
BID : 12833_KF5JRV
Read: GUEST
Subj: NWS USA WX Forecast 3/23
Path: IW8PGT<CX2SA<N9PMO<NS2B<KF5JRV
Sent: 170323/1215Z 12833@KF5JRV.#NWAR.AR.USA.NA BPQK6.0.13
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
354 AM EDT Thu Mar 23 2017
Valid 12Z Thu Mar 23 2017 - 12Z Sat Mar 25 2017
...Severe weather possible for the Southern/Central High Plains and Lower
Mississippi valley...
...Prime conditions for the spread of wildfires across the
Southern/Central High Plains...
...Increasingly active and wet pattern for northern California up to the
Pacific Northwest coast and east to the northern Great Basin/Intermountain
West...
A robust surface low pressure system will spin up and trek across the
central U.S. over the next few days bringing widespread showers and
thunderstorms. Prior to frontogenesis over the Plains, temperatures
ranging 15F to 20F above climatology are forecast for this afternoon. Dry
and strong, gusty winds over along the Texas/Oklahoma panhandles and
western Kansas will create favorable conditions for wildfires to rapidly
spread -- numerous counties have red flag warnings in effect. The Storm
Prediction Center has identified that the development of strong to severe
thunderstorms will be possible over the Southern/Central Plains today,
expanding into the Lower Mississippi Valley on Friday and Saturday.
Besides the heavy rainfall/severe weather threat, expect accumulating
snows underneath the parent upper low across the Southern/Central Rockies.
The current forecast suggests amounts in the 6 to 12 inch range over the
higher elevations of Colorado, Utah, and Wyoming. Further east, a
northward lifting warm front will keep conditions unsettled from Nebraska
eastward into the Middle Mississippi Valley and Upper Great Lakes region.
The heaviest rainfall amounts are expected across Nebraska which will be
closer to the comma-head of precipitation near the deep surface cyclone. A
cold front sagging southeast from Canada is forecast to bring freezing
rain or a rain/snow mix from the Upper Mississippi valley and Great Lakes
region by this evening and to the Northeast on Friday. A majority of the
Southeast will remain dry into the weekend. A few showers are likely to
pop up along coastal Florida.
Across the west, a deep upper trough will spread moderate to locally heavy
precipitation to from coastal Central California northward to the
international border. As usual, orographics will play a key role in
placement of the more concentrated activity. The heaviest amounts may be
across the Siskiyou and Shasta Ranges where the onshore flow and vertical
motions will be strongest.
Campbell/Rubin-Oster
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
73 Scott KF5JRV
KF5JRV.#NWAR.AR.USA.NA
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