ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 281938
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0238 PM CDT Tue Jul 28 2020
Valid 291200Z - 301200Z
Made the isolated dry thunderstorm area slightly smaller. This was
due to decreasing confidence about storm coverage. However, there
will likely be at least a few storms with a threat for lightning
ignitions, which warrants keeping most of the isoDryT area.
..Bentley.. 07/28/2020
.PREV DISCUSSION... /ISSUED 0201 AM CDT Tue Jul 28 2020/
...Synopsis...
On Wednesday, a closed upper-low is forecast to persist over eastern
Canada while high pressure builds over the western CONUS. Meanwhile,
a compact shortwave trough is forecast to approach the northern
California coast from the southwest by evening, as it moves around
the periphery of high pressure.
...Oregon...
The timing of the aforementioned shortwave trough appears a bit late
to help initiate more widespread thunderstorm development across
northern California and Oregon. Nevertheless, isolated thunderstorm
development appears possible across Oregon, as daytime
heating/mixing should erode much of the convective inhibition.
Given that thunderstorm development will occur within a well-mixed
boundary characterized by surface RH values <20% and PW values
<0.75", isolated dry thunderstorms will be possible.
...Please see www.spc.noaa.gov/fire for graphic product...
CLICK FOR DAY 2 FIREWX AREAL OUTLINE PRODUCT (KWNSPFWFD2)