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.
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 175
NWS Storm Prediction Center Norman OK
440 PM CDT Fri May 17 2019
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northern Nebraska
Southern South Dakota
* Effective this Friday afternoon from 440 PM until Midnight CDT.
* Primary threats include...
Widespread large hail and isolated very large hail events to 2.5
inches in diameter likely
Scattered damaging wind gusts to 70 mph likely
A tornado or two possible
SUMMARY...Severe thunderstorms capable of large hail will track
northward across the watch area this evening.
The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 110 miles west of
Valentine NE to 25 miles east of Mitchell SD. 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 171...WW 172...WW
173...WW 174...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
23035.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW5
WW 175 SEVERE TSTM NE SD 172140Z - 180500Z
AXIS..60 STATUTE MILES NORTH AND SOUTH OF LINE..
110W VTN/VALENTINE NE/ - 25E MHE/MITCHELL SD/
..AVIATION COORDS.. 50NM N/S /66NNE BFF - 33WNW FSD/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 23035.
LAT...LON 43700272 44639752 42909752 41950272
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 175 Status Report Messages:
STATUS REPORT #5 ON WW 175
VALID 180350Z - 180440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 E ANW TO
50 SSE 9V9 TO 5 S 9V9 TO 20 WNW HON.
..GOSS..05/18/19
ATTN...WFO...LBF...FSD...UNR...ABR...
&&
STATUS REPORT FOR WS 175
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC015-180440-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BOYD
$$
SDC003-005-009-015-023-035-043-053-061-067-073-111-180440-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
AURORA BEADLE BON HOMME
BRULE CHARLES MIX DAVISON
DOUGLAS GREGORY HANSON
HUTCHINSON JERAULD SANBORN
$$
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.
$$
STATUS REPORT #4 ON WW 175
VALID 180225Z - 180340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 NNE MHN
TO 40 NNE VTN TO 20 NNW 9V9 TO 35 WSW HON TO 20 WNW HON.
..WENDT..05/18/19
ATTN...WFO...LBF...FSD...UNR...ABR...
&&
STATUS REPORT FOR WS 175
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC015-017-103-180340-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BOYD BROWN KEYA PAHA
$$
SDC003-005-009-015-023-035-043-053-061-067-073-111-123-180340-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
AURORA BEADLE BON HOMME
BRULE CHARLES MIX DAVISON
DOUGLAS GREGORY HANSON
HUTCHINSON JERAULD SANBORN
TRIPP
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 175
VALID 180135Z - 180240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NW MHN TO
20 NE PHP.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 657
..WENDT..05/18/19
ATTN...WFO...LBF...FSD...UNR...ABR...
&&
STATUS REPORT FOR WS 175
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC015-017-031-103-180240-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BOYD BROWN CHERRY
KEYA PAHA
$$
SDC003-005-009-015-017-023-035-043-053-061-067-073-075-085-095-
111-121-123-180240-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
AURORA BEADLE BON HOMME
BRULE BUFFALO CHARLES MIX
DAVISON DOUGLAS GREGORY
HANSON HUTCHINSON JERAULD
JONES LYMAN MELLETTE
SANBORN TODD TRIPP
$$
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.
$$
STATUS REPORT #2 ON WW 175
VALID 180020Z - 180140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..WENDT..05/18/19
ATTN...WFO...LBF...FSD...UNR...ABR...
&&
STATUS REPORT FOR WS 175
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC015-017-031-103-161-180140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BOYD BROWN CHERRY
KEYA PAHA SHERIDAN
$$
SDC003-005-007-009-015-017-023-035-043-053-061-067-071-073-075-
085-095-111-121-123-180140-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
AURORA BEADLE BENNETT
BON HOMME BRULE BUFFALO
CHARLES MIX DAVISON DOUGLAS
GREGORY HANSON HUTCHINSON
JACKSON JERAULD JONES
LYMAN MELLETTE SANBORN
TODD TRIPP
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 175
VALID 172310Z - 180040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..WENDT..05/17/19
ATTN...WFO...LBF...FSD...UNR...ABR...
&&
STATUS REPORT FOR WS 175
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC015-017-031-103-161-180040-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BOYD BROWN CHERRY
KEYA PAHA SHERIDAN
$$
SDC003-005-007-009-015-017-023-035-043-053-061-067-071-073-075-
085-095-111-121-123-180040-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
AURORA BEADLE BENNETT
BON HOMME BRULE BUFFALO
CHARLES MIX DAVISON DOUGLAS
GREGORY HANSON HUTCHINSON
JACKSON JERAULD JONES
LYMAN MELLETTE SANBORN
TODD TRIPP
$$
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 (10%)
|
Hail
Probability of 10 or more severe hail events
|
High (80%)
|
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.
weather.gov 
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