Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 75
NWS Storm Prediction Center Norman OK
130 PM CDT Wed Apr 17 2019
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Western Oklahoma
Eastern Texas Panhandle
* Effective this Wednesday afternoon and evening from 130 PM
until 800 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 3
inches in diameter likely
Scattered damaging winds likely with isolated significant gusts
to 75 mph possible
A tornado or two possible
SUMMARY...Scattered thunderstorms should develop along a stationary
front and dryline across the eastern Texas Panhandle and then spread
into western Oklahoma. Large hail (some significant) is the primary
initial threat with severe wind gusts possible in the late afternoon
to early evening.
The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 70 miles west of Altus OK
to 100 miles north of Clinton OK. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU5).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
3 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
24035.
...Grams
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW5
WW 75 SEVERE TSTM OK TX 171830Z - 180100Z
AXIS..70 STATUTE MILES EAST AND WEST OF LINE..
70W LTS/ALTUS OK/ - 100N CSM/CLINTON OK/
..AVIATION COORDS.. 60NM E/W /20NNW CDS - 42NE MMB/
HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 24035.
LAT...LON 34630173 36770045 36779794 34639926
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 75 Status Report Message has not been issued yet.
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (10%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (60%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (40%)
|
Hail
Probability of 10 or more severe hail events
|
High (70%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (60%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (>95%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.
weather.gov 
@NWSSPC
