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.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 349
NWS Storm Prediction Center Norman OK
210 PM MDT Wed May 29 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Montana
Western North Dakota
Western South Dakota
Northeast Wyoming
* Effective this Wednesday afternoon and evening from 210 PM
until 900 PM MDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 65 mph possible
SUMMARY...Scattered strong to severe thunderstorms will continue to
develop and generally move northeastward across the region through
the evening.
The severe thunderstorm watch area is approximately along and 105
statute miles east and west of a line from 60 miles north northeast
of Wolf Point MT to 85 miles southwest of Rapid City SD. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU9).
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
2 inches. Extreme turbulence and surface wind gusts to 55 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
23025.
...Guyer
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 349 SEVERE TSTM MT ND SD WY 292010Z - 300300Z
AXIS..105 STATUTE MILES EAST AND WEST OF LINE..
60NNE OLF/WOLF POINT MT/ - 85SW RAP/RAPID CITY SD/
..AVIATION COORDS.. 90NM E/W /72NW ISN - 72SW RAP/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..55 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 23025.
LAT...LON 48880276 43150216 43150633 48880739
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 349 Status Report Messages:
STATUS REPORT #4 ON WW 349
VALID 300145Z - 300240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NNE DGW
TO 20 W 4BQ TO 25 SE OLF TO 35 WNW ISN TO 85 NNW ISN.
..MOORE..05/30/24
ATTN...WFO...BYZ...GGW...BIS...UNR...
&&
STATUS REPORT FOR WS 349
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC011-017-021-025-075-079-083-109-300240-
MT
. MONTANA COUNTIES INCLUDED ARE
CARTER CUSTER DAWSON
FALLON POWDER RIVER PRAIRIE
RICHLAND WIBAUX
$$
NDC001-007-011-023-025-033-041-053-087-089-105-300240-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
ADAMS BILLINGS BOWMAN
DIVIDE DUNN GOLDEN VALLEY
HETTINGER MCKENZIE SLOPE
STARK WILLIAMS
$$
SDC019-033-047-063-081-093-102-103-105-300240-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BUTTE CUSTER FALL RIVER
HARDING LAWRENCE MEADE
OGLALA LAKOTA PENNINGTON PERKINS
$$
WYC011-045-300240-
WY
. WYOMING COUNTIES INCLUDED ARE
CROOK WESTON
$$
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.
$$
STATUS REPORT #3 ON WW 349
VALID 300045Z - 300140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE SHR TO
10 S 4BQ TO 25 NE 4BQ TO 30 SSE GDV TO 15 N SDY TO 70 NNW ISN.
..LYONS..05/30/24
ATTN...WFO...BYZ...GGW...BIS...UNR...
&&
STATUS REPORT FOR WS 349
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC011-025-109-300140-
MT
. MONTANA COUNTIES INCLUDED ARE
CARTER FALLON WIBAUX
$$
NDC001-007-011-023-025-033-041-053-087-089-105-300140-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
ADAMS BILLINGS BOWMAN
DIVIDE DUNN GOLDEN VALLEY
HETTINGER MCKENZIE SLOPE
STARK WILLIAMS
$$
SDC019-033-047-063-081-093-102-103-105-300140-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BUTTE CUSTER FALL RIVER
HARDING LAWRENCE MEADE
OGLALA LAKOTA PENNINGTON PERKINS
$$
WYC005-011-045-300140-
WY
. WYOMING COUNTIES INCLUDED ARE
CAMPBELL CROOK WESTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 349
VALID 292355Z - 300040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NNE SHR
TO 35 NNE MLS TO 5 ESE OLF TO 75 N OLF.
..LYONS..05/29/24
ATTN...WFO...BYZ...GGW...BIS...UNR...
&&
STATUS REPORT FOR WS 349
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC011-017-021-025-075-079-083-085-091-109-300040-
MT
. MONTANA COUNTIES INCLUDED ARE
CARTER CUSTER DAWSON
FALLON POWDER RIVER PRAIRIE
RICHLAND ROOSEVELT SHERIDAN
WIBAUX
$$
NDC001-007-011-023-025-033-041-053-087-089-105-300040-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
ADAMS BILLINGS BOWMAN
DIVIDE DUNN GOLDEN VALLEY
HETTINGER MCKENZIE SLOPE
STARK WILLIAMS
$$
SDC019-033-047-063-081-093-102-103-105-300040-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BUTTE CUSTER FALL RIVER
HARDING LAWRENCE MEADE
OGLALA LAKOTA PENNINGTON PERKINS
$$
WYC005-011-033-045-300040-
WY
. WYOMING COUNTIES INCLUDED ARE
CAMPBELL CROOK SHERIDAN
WESTON
$$
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.
$$
STATUS REPORT #1 ON WW 349
VALID 292200Z - 292340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LYONS..05/29/24
ATTN...WFO...BYZ...GGW...BIS...UNR...
&&
STATUS REPORT FOR WS 349
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC003-011-017-021-025-033-055-065-075-079-083-085-087-091-103-
109-111-292340-
MT
. MONTANA COUNTIES INCLUDED ARE
BIG HORN CARTER CUSTER
DAWSON FALLON GARFIELD
MCCONE MUSSELSHELL POWDER RIVER
PRAIRIE RICHLAND ROOSEVELT
ROSEBUD SHERIDAN TREASURE
WIBAUX YELLOWSTONE
$$
NDC001-007-011-023-025-033-041-053-087-089-105-292340-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
ADAMS BILLINGS BOWMAN
DIVIDE DUNN GOLDEN VALLEY
HETTINGER MCKENZIE SLOPE
STARK WILLIAMS
$$
SDC019-033-047-063-081-093-102-103-105-292340-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BUTTE CUSTER FALL RIVER
HARDING LAWRENCE MEADE
OGLALA LAKOTA PENNINGTON PERKINS
$$
WYC005-011-033-045-292340-
WY
. WYOMING COUNTIES INCLUDED ARE
CAMPBELL CROOK SHERIDAN
WESTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (10%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Low (10%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (50%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (30%)
|
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.