Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 285
NWS Storm Prediction Center Norman OK
210 AM CDT Sun May 29 2022
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Extreme northwestern Iowa
Southwestern Minnesota
Southeastern South Dakota
* Effective this Sunday morning from 210 AM until 1000 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated very large hail events to 2 inches in diameter possible
SUMMARY...An expanding cluster of thunderstorms, initially west to
northwest of YKN, may continue to pose a risk for severe hail and
gusts as it moves out of severe thunderstorm watch 284 and into this
watch area, along and north of the gust front from another
convective complex now well to the north.
The severe thunderstorm watch area is approximately along and 40
statute miles either side of a line from 30 miles south of Mitchell
SD to 35 miles north of Worthington MN. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU5).
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 284...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
24035.
...Edwards
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 285
NWS Storm Prediction Center Norman OK
210 AM CDT Sun May 29 2022
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Extreme northwestern Iowa
Southwestern Minnesota
Southeastern South Dakota
* Effective this Sunday morning from 210 AM until 1000 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated very large hail events to 2 inches in diameter possible
SUMMARY...An expanding cluster of thunderstorms, initially west to
northwest of YKN, may continue to pose a risk for severe hail and
gusts as it moves out of severe thunderstorm watch 284 and into this
watch area, along and north of the gust front from another
convective complex now well to the north.
The severe thunderstorm watch area is approximately along and 40
statute miles either side of a line from 30 miles south of Mitchell
SD to 35 miles north of Worthington MN. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU5).
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 284...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
24035.
...Edwards
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW5
WW 285 SEVERE TSTM IA MN SD 290710Z - 291500Z
AXIS..40 STATUTE MILES EITHER SIDE OF LINE..
30S MHE/MITCHELL SD/ - 35N OTG/WORTHINGTON MN/
..AVIATION COORDS.. 35NM EITHER SIDE /58WSW FSD - 27SW RWF/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 24035.
LAT...LON 43889830 44709585 43619532 42799777
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 285 Status Report Messages:
STATUS REPORT #2 ON WW 285
VALID 290940Z - 291040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ENE YKN
TO 5 WNW BKX.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 956
..MOSIER..05/29/22
ATTN...WFO...FSD...
&&
STATUS REPORT FOR WS 285
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC119-143-291040-
IA
. IOWA COUNTIES INCLUDED ARE
LYON OSCEOLA
$$
MNC033-063-081-083-101-105-117-133-291040-
MN
. MINNESOTA COUNTIES INCLUDED ARE
COTTONWOOD JACKSON LINCOLN
LYON MURRAY NOBLES
PIPESTONE ROCK
$$
SDC011-083-099-101-291040-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BROOKINGS LINCOLN MINNEHAHA
MOODY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 285
VALID 290835Z - 290940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..MOSIER..05/29/22
ATTN...WFO...FSD...
&&
STATUS REPORT FOR WS 285
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC119-143-290940-
IA
. IOWA COUNTIES INCLUDED ARE
LYON OSCEOLA
$$
MNC033-063-081-083-101-105-117-133-290940-
MN
. MINNESOTA COUNTIES INCLUDED ARE
COTTONWOOD JACKSON LINCOLN
LYON MURRAY NOBLES
PIPESTONE ROCK
$$
SDC009-011-035-061-067-079-083-087-097-099-101-125-135-290940-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BON HOMME BROOKINGS DAVISON
HANSON HUTCHINSON LAKE
LINCOLN MCCOOK MINER
MINNEHAHA MOODY TURNER
YANKTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (10%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (40%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (60%)
|
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 
@NWSSPC
