Another round of widespread strong to severe thunderstorms are expected later this evening into tonight. All hazards of damaging winds, large hail, and tornadoes could accompany these storms. Additionally, isolated instances of flash flooding are possible. Please have a way to receive warnings during these times of severe weather. Read More >
Prior to every flight, pilots should gather all information vital to the nature of the flight. This site is informational in nature and is designed to assist pilots and aircrews for flight planning and weather familiarization. It may be used in conjunction with other preflight information sources needed to satisfy all the requirements of 14 CFR 91.103 and is not to be considered as a sole source of information to meet all preflight action. Pilots can complete their regulatory-compliant preflight briefing by using other automated resources or from Flight Service at www.1800wxbrief.com or by calling 1-800-WX-BRIEF.
.AVIATION /04Z SATURDAY THROUGH WEDNESDAY/...
As of 730 PM Friday...
VFR conditions turn to MVFR with temporary conditions of IFR
under heavy thunderstorm showers as a broken line of storms
heads our way tonight. For the western sites, anywhere from 3Z
to 6Z there will be active weather with possible strong to
severe thunderstorms traveling very fast through those site
areas. They will likely see very strong gusts along the outflow
boundaries and in the vicinity where storms pass by. Heavy
downpours will drop VIS down to IFR at times. Once the activity
is through those sites winds will stay elevated with gusts near
30kts along with VFR conditions behind the line.
The eastern sites will be next to get hit with strong to severe
wind gusts along with IFR VIS under heavy thunderstorm showers
from around 4Z to 9Z with CKB/EKN possibly a few hours later.
Once that activity passes by VIS/CIGs will lift back to VFR,
however windy conditons will continue through the period with
gust up to 30kts. Worst case, CIG heights will hover around
MVFR and VIS could get down to below IFR if a shower is heavy
enough. Wind shear will not be a factor since surface flow will
be elevated, however if the surface flow weakens temporarily then
wind shear will become a factor and this goes for most sites.
FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 06Z SUNDAY...
FORECAST CONFIDENCE: Medium to high.
AVIATION FORECAST CONFIDENCE
Updated: 1134 PM EDT Fri May 16 2025 |
UTC | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 |
EDT | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 |
CRW | M | L | M | M | H | H | H | H | H | H | H | H |
HTS | L | M | H | L | H | H | H | H | H | H | H | H |
BKW | H | M | M | H | M | L | H | H | H | H | H | H |
EKN | H | H | H | M | H | H | H | M | M | M | H | H |
PKB | H | M | M | H | M | M | M | H | H | H | H | H |
CKB | H | H | H | M | H | H | H | H | H | H | H | H |
12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | |
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12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | |
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