Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 630
NWS Storm Prediction Center Norman OK
1250 PM MDT Sat Aug 17 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Western and Central Utah
Southwest Wyoming
* Effective this Saturday afternoon and evening from 1250 PM
until 700 PM MDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Clusters of thunderstorms will spread across much of Utah
this afternoon and early evening, posing a risk of locally damaging
wind gusts and hail.
The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 40 miles east of Saint
George UT to 25 miles northeast of Salt Lake City UT. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU0).
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
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
23030.
...Hart
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 630
NWS Storm Prediction Center Norman OK
1250 PM MDT Sat Aug 17 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Western and Central Utah
Southwest Wyoming
* Effective this Saturday afternoon and evening from 1250 PM
until 700 PM MDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Clusters of thunderstorms will spread across much of Utah
this afternoon and early evening, posing a risk of locally damaging
wind gusts and hail.
The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 40 miles east of Saint
George UT to 25 miles northeast of Salt Lake City UT. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU0).
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
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
23030.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 630 SEVERE TSTM UT WY 171850Z - 180100Z
AXIS..70 STATUTE MILES EAST AND WEST OF LINE..
40E SGU/SAINT GEORGE UT/ - 25NE SLC/SALT LAKE CITY UT/
..AVIATION COORDS.. 60NM E/W /46SW BCE - 19NE SLC/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 23030.
LAT...LON 37071414 41031297 41031029 37071160
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 630 Status Report Messages:
STATUS REPORT #3 ON WW 630
VALID 172155Z - 172240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 E ELY TO
30 NE U24 TO 30 NNW PUC TO 45 N EVW.
..LYONS..08/17/24
ATTN...WFO...SLC...
&&
STATUS REPORT FOR WS 630
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
UTC001-007-013-015-017-021-025-027-031-039-041-053-055-172240-
UT
. UTAH COUNTIES INCLUDED ARE
BEAVER CARBON DUCHESNE
EMERY GARFIELD IRON
KANE MILLARD PIUTE
SANPETE SEVIER WASHINGTON
WAYNE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 630
VALID 172135Z - 172240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LYONS..08/17/24
ATTN...WFO...SLC...
&&
STATUS REPORT FOR WS 630
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
UTC001-007-013-015-017-021-023-025-027-031-035-039-041-043-045-
049-051-053-055-172240-
UT
. UTAH COUNTIES INCLUDED ARE
BEAVER CARBON DUCHESNE
EMERY GARFIELD IRON
JUAB KANE MILLARD
PIUTE SALT LAKE SANPETE
SEVIER SUMMIT TOOELE
UTAH WASATCH WASHINGTON
WAYNE
$$
WYC041-172240-
WY
. WYOMING COUNTIES INCLUDED ARE
UINTA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 630
VALID 172025Z - 172140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BENTLEY..08/17/24
ATTN...WFO...SLC...
&&
STATUS REPORT FOR WS 630
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
UTC001-007-013-015-017-021-023-025-027-031-035-039-041-043-045-
049-051-053-055-172140-
UT
. UTAH COUNTIES INCLUDED ARE
BEAVER CARBON DUCHESNE
EMERY GARFIELD IRON
JUAB KANE MILLARD
PIUTE SALT LAKE SANPETE
SEVIER SUMMIT TOOELE
UTAH WASATCH WASHINGTON
WAYNE
$$
WYC041-172140-
WY
. WYOMING COUNTIES INCLUDED ARE
UINTA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (<5%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (60%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (<5%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (80%)
|
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 
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