Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL3
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 443
NWS Storm Prediction Center Norman OK
125 PM MDT Fri Jun 21 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northern Colorado
South Central Montana
Western Nebraska Panhandle
Eastern Wyoming
* Effective this Friday afternoon and evening from 125 PM until
900 PM MDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
A tornado or two possible
SUMMARY...Scattered thunderstorms will continue to intensify this
afternoon across eastern Wyoming and adjacent areas, with a few
supercell storms possible. Large hail is the main threat, with a
few instances of damaging winds also possible.
The severe thunderstorm watch area is approximately along and 65
statute miles east and west of a line from 25 miles north northeast
of Sheridan WY to 30 miles south of Cheyenne WY. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU3).
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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 441...WW 442...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
24035.
...Hart
SEL3
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 443
NWS Storm Prediction Center Norman OK
125 PM MDT Fri Jun 21 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northern Colorado
South Central Montana
Western Nebraska Panhandle
Eastern Wyoming
* Effective this Friday afternoon and evening from 125 PM until
900 PM MDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
A tornado or two possible
SUMMARY...Scattered thunderstorms will continue to intensify this
afternoon across eastern Wyoming and adjacent areas, with a few
supercell storms possible. Large hail is the main threat, with a
few instances of damaging winds also possible.
The severe thunderstorm watch area is approximately along and 65
statute miles east and west of a line from 25 miles north northeast
of Sheridan WY to 30 miles south of Cheyenne WY. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU3).
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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 441...WW 442...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
24035.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW3
WW 443 SEVERE TSTM CO MT NE WY 211925Z - 220300Z
AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
25NNE SHR/SHERIDAN WY/ - 30S CYS/CHEYENNE WY/
..AVIATION COORDS.. 55NM E/W /20NE SHR - 30S CYS/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24035.
LAT...LON 45100545 40710358 40710606 45100812
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU3.
Watch 443 Status Report Messages:
STATUS REPORT #6 ON WW 443
VALID 220230Z - 220300Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 60 W FCL TO
30 NNW CYS TO 30 ENE CDR.
WW 443 WILL BE ALLOWED TO EXPIRE AT 220300Z.
..GLEASON..06/22/24
ATTN...WFO...BOU...BYZ...CYS...RIW...UNR...
&&
STATUS REPORT FOR WS 443
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC069-075-095-115-123-220300-
CO
. COLORADO COUNTIES INCLUDED ARE
LARIMER LOGAN PHILLIPS
SEDGWICK WELD
$$
NEC007-013-033-045-105-123-157-165-220300-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BANNER BOX BUTTE CHEYENNE
DAWES KIMBALL MORRILL
SCOTTS BLUFF SIOUX
$$
WYC015-021-220300-
WY
. WYOMING COUNTIES INCLUDED ARE
GOSHEN LARAMIE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #5 ON WW 443
VALID 220145Z - 220240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 WSW LAR
TO 35 NW CDR.
..GLEASON..06/22/24
ATTN...WFO...BOU...BYZ...CYS...RIW...UNR...
&&
STATUS REPORT FOR WS 443
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC069-075-095-115-123-220240-
CO
. COLORADO COUNTIES INCLUDED ARE
LARIMER LOGAN PHILLIPS
SEDGWICK WELD
$$
NEC007-013-033-045-105-123-157-165-220240-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BANNER BOX BUTTE CHEYENNE
DAWES KIMBALL MORRILL
SCOTTS BLUFF SIOUX
$$
WYC001-015-021-031-220240-
WY
. WYOMING COUNTIES INCLUDED ARE
ALBANY GOSHEN LARAMIE
PLATTE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 443
VALID 220040Z - 220140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 WSW LAR
TO 25 NNW LAR TO 15 ESE DGW TO 55 N DGW TO 25 SW GCC TO 30 WSW
4BQ.
..GLEASON..06/22/24
ATTN...WFO...BOU...BYZ...CYS...RIW...UNR...
&&
STATUS REPORT FOR WS 443
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC069-075-095-115-123-220140-
CO
. COLORADO COUNTIES INCLUDED ARE
LARIMER LOGAN PHILLIPS
SEDGWICK WELD
$$
NEC007-013-033-045-105-123-157-165-220140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BANNER BOX BUTTE CHEYENNE
DAWES KIMBALL MORRILL
SCOTTS BLUFF SIOUX
$$
WYC001-005-009-011-015-021-027-031-045-220140-
WY
. WYOMING COUNTIES INCLUDED ARE
ALBANY CAMPBELL CONVERSE
CROOK GOSHEN LARAMIE
NIOBRARA PLATTE 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 443
VALID 212345Z - 220040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 N RWL TO
40 NNW CPR TO 45 SSE SHR TO 35 N SHR.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1366
..GLEASON..06/21/24
ATTN...WFO...BOU...BYZ...CYS...RIW...UNR...
&&
STATUS REPORT FOR WS 443
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC069-075-095-115-123-220040-
CO
. COLORADO COUNTIES INCLUDED ARE
LARIMER LOGAN PHILLIPS
SEDGWICK WELD
$$
MTC003-220040-
MT
. MONTANA COUNTIES INCLUDED ARE
BIG HORN
$$
NEC007-013-033-045-105-123-157-165-220040-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BANNER BOX BUTTE CHEYENNE
DAWES KIMBALL MORRILL
SCOTTS BLUFF SIOUX
$$
WYC001-005-009-011-015-019-021-025-027-031-033-045-220040-
WY
. WYOMING COUNTIES INCLUDED ARE
ALBANY CAMPBELL CONVERSE
CROOK GOSHEN JOHNSON
LARAMIE NATRONA NIOBRARA
PLATTE SHERIDAN WESTON
$$
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.
$$
STATUS REPORT #2 ON WW 443
VALID 212225Z - 212340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GLEASON..06/21/24
ATTN...WFO...BOU...BYZ...CYS...RIW...UNR...
&&
STATUS REPORT FOR WS 443
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC069-075-095-115-123-212340-
CO
. COLORADO COUNTIES INCLUDED ARE
LARIMER LOGAN PHILLIPS
SEDGWICK WELD
$$
MTC003-212340-
MT
. MONTANA COUNTIES INCLUDED ARE
BIG HORN
$$
NEC007-013-033-045-105-123-157-165-212340-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BANNER BOX BUTTE CHEYENNE
DAWES KIMBALL MORRILL
SCOTTS BLUFF SIOUX
$$
WYC001-003-005-009-011-015-019-021-025-027-031-033-043-045-
212340-
WY
. WYOMING COUNTIES INCLUDED ARE
ALBANY BIG HORN CAMPBELL
CONVERSE CROOK GOSHEN
JOHNSON LARAMIE NATRONA
NIOBRARA PLATTE SHERIDAN
WASHAKIE 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 443
VALID 212035Z - 212140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1358
..WEINMAN..06/21/24
ATTN...WFO...BOU...BYZ...CYS...RIW...UNR...
&&
STATUS REPORT FOR WS 443
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC069-123-212140-
CO
. COLORADO COUNTIES INCLUDED ARE
LARIMER WELD
$$
MTC003-212140-
MT
. MONTANA COUNTIES INCLUDED ARE
BIG HORN
$$
NEC007-105-157-165-212140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BANNER KIMBALL SCOTTS BLUFF
SIOUX
$$
WYC001-003-005-009-011-015-019-021-025-027-031-033-043-045-
212140-
WY
. WYOMING COUNTIES INCLUDED ARE
ALBANY BIG HORN CAMPBELL
CONVERSE CROOK GOSHEN
JOHNSON LARAMIE NATRONA
NIOBRARA PLATTE SHERIDAN
WASHAKIE WESTON
$$
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 (20%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (5%)
|
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
|
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 (90%)
|
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.