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 270
NWS Storm Prediction Center Norman OK
300 PM CDT Mon Jun 8 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest Minnesota
Northeast North Dakota
* Effective this Monday afternoon and evening from 300 PM until
1100 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 3
inches in diameter likely
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Thunderstorm development is expected from northeast North
Dakota into northwest Minnesota the next couple of hours, along a
slow-moving surface front. The storm environment will be favorable
for supercells with very large hail, and perhaps an isolated tornado
or two with storms interacting with the front. Otherwise, storms
may grow into one or more clusters late this afternoon through this
evening, with a continuing threat for large hail and damaging winds.
The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 25 miles southeast of
Grand Forks ND to 25 miles northeast of Hallock MN. 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
3 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
24030.
...Thompson
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 270
NWS Storm Prediction Center Norman OK
300 PM CDT Mon Jun 8 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest Minnesota
Northeast North Dakota
* Effective this Monday afternoon and evening from 300 PM until
1100 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 3
inches in diameter likely
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Thunderstorm development is expected from northeast North
Dakota into northwest Minnesota the next couple of hours, along a
slow-moving surface front. The storm environment will be favorable
for supercells with very large hail, and perhaps an isolated tornado
or two with storms interacting with the front. Otherwise, storms
may grow into one or more clusters late this afternoon through this
evening, with a continuing threat for large hail and damaging winds.
The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 25 miles southeast of
Grand Forks ND to 25 miles northeast of Hallock MN. 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
3 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
24030.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 270 SEVERE TSTM MN ND 082000Z - 090400Z
AXIS..60 STATUTE MILES EAST AND WEST OF LINE..
25SE GFK/GRAND FORKS ND/ - 25NE HCO/HALLOCK MN/
..AVIATION COORDS.. 50NM E/W /22SE GFK - 60SSE YWG/
HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 24030.
LAT...LON 47699809 49009787 49009523 47699551
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 270 Status Report Messages:
STATUS REPORT #4 ON WW 270
VALID 090345Z - 090400Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 E TVF TO
20 SSE ROX TO 5 NE RRT.
WW 270 WILL BE ALLOWED TO EXPIRE AT 090400Z.
..DIAL..06/09/20
ATTN...WFO...FGF...
&&
STATUS REPORT FOR WS 270
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC007-077-090400-
MN
. MINNESOTA COUNTIES INCLUDED ARE
BELTRAMI LAKE OF THE WOODS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 270
VALID 090235Z - 090340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 NNE BJI
TO 30 ESE TVF TO 20 NNW TVF TO 35 NE HCO.
..NAUSLAR..06/09/20
ATTN...WFO...FGF...
&&
STATUS REPORT FOR WS 270
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC007-077-089-135-090340-
MN
. MINNESOTA COUNTIES INCLUDED ARE
BELTRAMI LAKE OF THE WOODS MARSHALL
ROSEAU
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 270
VALID 090020Z - 090140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 884
..NAUSLAR..06/09/20
ATTN...WFO...FGF...
&&
STATUS REPORT FOR WS 270
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC007-029-069-077-089-113-119-125-135-090140-
MN
. MINNESOTA COUNTIES INCLUDED ARE
BELTRAMI CLEARWATER KITTSON
LAKE OF THE WOODS MARSHALL PENNINGTON
POLK RED LAKE ROSEAU
$$
NDC035-063-067-099-090140-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
GRAND FORKS NELSON PEMBINA
WALSH
$$
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.
$$
STATUS REPORT #1 ON WW 270
VALID 082235Z - 082340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..NAUSLAR..06/08/20
ATTN...WFO...FGF...
&&
STATUS REPORT FOR WS 270
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC007-029-069-077-089-113-119-125-135-082340-
MN
. MINNESOTA COUNTIES INCLUDED ARE
BELTRAMI CLEARWATER KITTSON
LAKE OF THE WOODS MARSHALL PENNINGTON
POLK RED LAKE ROSEAU
$$
NDC035-063-067-099-082340-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
GRAND FORKS NELSON PEMBINA
WALSH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (40%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
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 (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.
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