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 155
NWS Storm Prediction Center Norman OK
640 PM CDT Sat May 8 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southwest Iowa
Northeast Kansas
Northwest Missouri
Southeast Nebraska
* Effective this Saturday night and Sunday morning from 640 PM
until 100 AM CDT.
* Primary threats include...
Scattered large hail likely with isolated very large hail events
to 2 inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Thunderstorms will increase in coverage and intensity this
evening north of a warm front and across the watch area. Large hail
and gusty/damaging winds are the main threats.
The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 35 miles west northwest
of Beatrice NE to 30 miles north northeast of Saint Joseph MO. 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 153...WW 154...
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
27035.
...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 155 SEVERE TSTM IA KS MO NE 082340Z - 090600Z
AXIS..45 STATUTE MILES NORTH AND SOUTH OF LINE..
35WNW BIE/BEATRICE NE/ - 30NNE STJ/SAINT JOSEPH MO/
..AVIATION COORDS.. 40NM N/S /56WNW PWE - 53N MCI/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27035.
LAT...LON 41139737 40829470 39529470 39839737
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 155 Status Report Messages:
STATUS REPORT #3 ON WW 155
VALID 090450Z - 090540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 N TOP TO
15 E FNB TO 20 NNE SDA.
..BROYLES..05/09/21
ATTN...WFO...OAX...EAX...TOP...
&&
STATUS REPORT FOR WS 155
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC145-090540-
IA
. IOWA COUNTIES INCLUDED ARE
PAGE
$$
KSC005-043-090540-
KS
. KANSAS COUNTIES INCLUDED ARE
ATCHISON DONIPHAN
$$
MOC003-087-147-090540-
MO
. MISSOURI COUNTIES INCLUDED ARE
ANDREW HOLT NODAWAY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 155
VALID 090350Z - 090440Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..05/09/21
ATTN...WFO...OAX...EAX...TOP...
&&
STATUS REPORT FOR WS 155
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC071-145-090440-
IA
. IOWA COUNTIES INCLUDED ARE
FREMONT PAGE
$$
KSC005-013-043-117-131-090440-
KS
. KANSAS COUNTIES INCLUDED ARE
ATCHISON BROWN DONIPHAN
MARSHALL NEMAHA
$$
MOC003-005-087-147-090440-
MO
. MISSOURI COUNTIES INCLUDED ARE
ANDREW ATCHISON HOLT
NODAWAY
$$
NEC025-067-095-097-109-127-131-133-147-151-159-090440-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CASS GAGE JEFFERSON
JOHNSON LANCASTER NEMAHA
OTOE PAWNEE RICHARDSON
SALINE SEWARD
$$
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.
$$
STATUS REPORT #1 ON WW 155
VALID 090130Z - 090240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..05/09/21
ATTN...WFO...OAX...EAX...TOP...
&&
STATUS REPORT FOR WS 155
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC071-145-090240-
IA
. IOWA COUNTIES INCLUDED ARE
FREMONT PAGE
$$
KSC005-013-043-117-131-090240-
KS
. KANSAS COUNTIES INCLUDED ARE
ATCHISON BROWN DONIPHAN
MARSHALL NEMAHA
$$
MOC003-005-087-147-090240-
MO
. MISSOURI COUNTIES INCLUDED ARE
ANDREW ATCHISON HOLT
NODAWAY
$$
NEC025-067-095-097-109-127-131-133-147-151-159-090240-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CASS GAGE JEFFERSON
JOHNSON LANCASTER NEMAHA
OTOE PAWNEE RICHARDSON
SALINE SEWARD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (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.
weather.gov 
@NWSSPC
