Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0127 PM CDT Wed Apr 05 2017 Valid 061200Z - 071200Z ...Central/Southern FL Peninsula... Afternoon RH values are expected to drop into the mid 30s across interior portions of the central and southern FL Peninsula as northwesterly flow advects a dry airmass into the region. These dry conditions amidst breezy northwest winds and very dry fuels will result in an elevated to locally critical fire weather threat and no changes are needed to the previous outlook. ..Mosier.. 04/05/2017 .PREV DISCUSSION... /ISSUED 0132 AM CDT Wed Apr 05 2017/ ...Synopsis... A powerful longwave trough over the eastern U.S. will spread very strong mid-level flow over portions of the southeast on D2/Thu. Upstream of this trough, mid/upper ridging will slowly translate eastward from the Intermountain West into the Plains by late in the period. Another strong system will approach portions of Oregon and northern California late in the period. At the surface, a dry airmass will spread into the southeast and Florida throughout the day as westerly flow becomes established on the southern periphery of a surface low over Ohio. This dry airmass, in conjunction with surface warming and areas of dry fuels in the Florida Peninsula, will foster areas of elevated fire weather conditions in the afternoon (especially in the delineated area). Farther west, a lack of a surface pressure gradient and weakened mid-level flow beneath the upper ridge will result in a general lack of surface flow in dry areas of the southern Rockies and adjacent Plains, mitigating the need for highlights there. ...Please see http://ift.tt/2i2um2s for graphic product...Read more
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