Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 352
NWS Storm Prediction Center Norman OK
105 PM MDT Fri Jul 10 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
northeast Montana
western and central North Dakota
western and central South Dakota
northeast Wyoming
* Effective this Friday afternoon and evening from 105 PM until
900 PM MDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 2.5
inches in diameter likely
A tornado or two possible
SUMMARY...Scattered severe thunderstorms including isolated
supercells are expected late this afternoon into tonight, ahead of
an eastward and southeastward advancing cold front. By early this
evening, storms may begin to consolidate and evolve into a
organizing cluster across parts of southeastern North Dakota and
northwestern South Dakota, posing increasing potential for severe
wind gusts while advancing southeastward.
The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 50 miles north of
Williston ND to 110 miles southeast of Buffalo SD. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU2).
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
2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
28030.
...Kerr
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 352
NWS Storm Prediction Center Norman OK
105 PM MDT Fri Jul 10 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
northeast Montana
western and central North Dakota
western and central South Dakota
northeast Wyoming
* Effective this Friday afternoon and evening from 105 PM until
900 PM MDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 2.5
inches in diameter likely
A tornado or two possible
SUMMARY...Scattered severe thunderstorms including isolated
supercells are expected late this afternoon into tonight, ahead of
an eastward and southeastward advancing cold front. By early this
evening, storms may begin to consolidate and evolve into a
organizing cluster across parts of southeastern North Dakota and
northwestern South Dakota, posing increasing potential for severe
wind gusts while advancing southeastward.
The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 50 miles north of
Williston ND to 110 miles southeast of Buffalo SD. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU2).
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
2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
28030.
...Kerr
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW2
WW 352 SEVERE TSTM MT ND SD WY 101905Z - 110300Z
AXIS..80 STATUTE MILES EAST AND WEST OF LINE..
50N ISN/WILLISTON ND/ - 110SE 2WX/BUFFALO SD/
..AVIATION COORDS.. 70NM E/W /43N ISN - 40SSW DPR/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 28030.
LAT...LON 48890187 44420032 44420356 48890539
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU2.
Watch 352 Status Report Messages:
STATUS REPORT #3 ON WW 352
VALID 110025Z - 110140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SW 2WX TO
35 ESE BHK TO 15 ENE SDY TO 55 NNW ISN.
..SPC..07/11/20
ATTN...WFO...GGW...BIS...UNR...ABR...
&&
STATUS REPORT FOR WS 352
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC001-007-011-013-015-023-025-029-033-037-041-047-051-053-055-
057-059-061-065-075-085-087-089-101-105-110140-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
ADAMS BILLINGS BOWMAN
BURKE BURLEIGH DIVIDE
DUNN EMMONS GOLDEN VALLEY
GRANT HETTINGER LOGAN
MCINTOSH MCKENZIE MCLEAN
MERCER MORTON MOUNTRAIL
OLIVER RENVILLE SIOUX
SLOPE STARK WARD
WILLIAMS
$$
SDC007-019-021-031-041-055-063-065-071-075-081-085-089-093-095-
102-103-105-107-117-119-121-123-129-137-110140-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BENNETT BUTTE CAMPBELL
CORSON DEWEY HAAKON
HARDING HUGHES JACKSON
JONES LAWRENCE LYMAN
MCPHERSON MEADE MELLETTE
OGLALA LAKOTA PENNINGTON PERKINS
POTTER STANLEY SULLY
TODD TRIPP WALWORTH
ZIEBACH
$$
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.
$$
STATUS REPORT #2 ON WW 352
VALID 102225Z - 102340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..SPC..07/10/20
ATTN...WFO...GGW...BIS...UNR...ABR...
&&
STATUS REPORT FOR WS 352
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC019-021-083-085-091-109-102340-
MT
. MONTANA COUNTIES INCLUDED ARE
DANIELS DAWSON RICHLAND
ROOSEVELT SHERIDAN WIBAUX
$$
NDC001-007-011-013-015-023-025-029-033-037-041-053-055-057-059-
061-065-075-085-087-089-101-105-102340-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
ADAMS BILLINGS BOWMAN
BURKE BURLEIGH DIVIDE
DUNN EMMONS GOLDEN VALLEY
GRANT HETTINGER MCKENZIE
MCLEAN MERCER MORTON
MOUNTRAIL OLIVER RENVILLE
SIOUX SLOPE STARK
WARD WILLIAMS
$$
SDC007-019-021-031-041-055-063-065-071-075-081-085-093-095-103-
105-107-117-119-121-123-129-137-102340-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BENNETT BUTTE CAMPBELL
CORSON DEWEY HAAKON
HARDING HUGHES JACKSON
JONES LAWRENCE LYMAN
MEADE MELLETTE PENNINGTON
PERKINS POTTER STANLEY
SULLY TODD TRIPP
WALWORTH ZIEBACH
$$
WYC011-102340-
WY
. WYOMING COUNTIES INCLUDED ARE
CROOK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 352
VALID 102025Z - 102140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..COOK..07/10/20
ATTN...WFO...GGW...BIS...UNR...ABR...
&&
STATUS REPORT FOR WS 352
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC019-021-083-085-091-109-102140-
MT
. MONTANA COUNTIES INCLUDED ARE
DANIELS DAWSON RICHLAND
ROOSEVELT SHERIDAN WIBAUX
$$
NDC001-007-011-013-015-023-025-029-033-037-041-053-055-057-059-
061-065-075-085-087-089-101-105-102140-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
ADAMS BILLINGS BOWMAN
BURKE BURLEIGH DIVIDE
DUNN EMMONS GOLDEN VALLEY
GRANT HETTINGER MCKENZIE
MCLEAN MERCER MORTON
MOUNTRAIL OLIVER RENVILLE
SIOUX SLOPE STARK
WARD WILLIAMS
$$
SDC007-019-021-031-041-055-063-065-071-075-081-085-093-095-103-
105-107-117-119-121-123-129-137-102140-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BENNETT BUTTE CAMPBELL
CORSON DEWEY HAAKON
HARDING HUGHES JACKSON
JONES LAWRENCE LYMAN
MEADE MELLETTE PENNINGTON
PERKINS POTTER STANLEY
SULLY TODD TRIPP
WALWORTH ZIEBACH
$$
WYC011-102140-
WY
. WYOMING COUNTIES INCLUDED ARE
CROOK
$$
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 (10%)
|
Wind
Probability of 10 or more severe wind events
|
High (70%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (60%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (60%)
|
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.