Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 217
NWS Storm Prediction Center Norman OK
140 PM CDT Sun May 24 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southwest Iowa
Northeast Kansas
Northwest Missouri
Southeast Nebraska
* Effective this Sunday afternoon and evening from 140 PM until
800 PM 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 are beginning to form over northeast Kansas
and northwest Missouri. These storms will track northward across
the watch area this afternoon, posing a risk of large hail and
damaging wind gusts. The strongest cells may also produce a tornado
or two.
The severe thunderstorm watch area is approximately along and 85
statute miles north and south of a line from 35 miles west southwest
of Lincoln NE to 5 miles east southeast of Lamoni IA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU7).
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 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
20030.
...Hart
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 217
NWS Storm Prediction Center Norman OK
140 PM CDT Sun May 24 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southwest Iowa
Northeast Kansas
Northwest Missouri
Southeast Nebraska
* Effective this Sunday afternoon and evening from 140 PM until
800 PM 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 are beginning to form over northeast Kansas
and northwest Missouri. These storms will track northward across
the watch area this afternoon, posing a risk of large hail and
damaging wind gusts. The strongest cells may also produce a tornado
or two.
The severe thunderstorm watch area is approximately along and 85
statute miles north and south of a line from 35 miles west southwest
of Lincoln NE to 5 miles east southeast of Lamoni IA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU7).
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 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
20030.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW7
WW 217 SEVERE TSTM IA KS MO NE 241840Z - 250100Z
AXIS..85 STATUTE MILES NORTH AND SOUTH OF LINE..
35WSW LNK/LINCOLN NE/ - 5ESE LWD/LAMONI IA/
..AVIATION COORDS.. 75NM N/S /60WNW PWE - 52S DSM/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 20030.
LAT...LON 41889739 41819384 39349384 39419739
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU7.
Watch 217 Status Report Messages:
STATUS REPORT #6 ON WW 217
VALID 250030Z - 250100Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 NE LWD TO
35 WNW LWD TO 40 NW LWD TO 5 SSW DSM.
WW 217 WILL BE ALLOWED TO EXPIRE AT 250100Z.
..SQUITIERI..05/25/20
ATTN...WFO...DMX...OAX...EAX...TOP...
&&
STATUS REPORT FOR WS 217
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC007-039-051-053-099-117-121-123-125-127-135-157-171-175-179-
181-185-250100-
IA
. IOWA COUNTIES INCLUDED ARE
APPANOOSE CLARKE DAVIS
DECATUR JASPER LUCAS
MADISON MAHASKA MARION
MARSHALL MONROE POWESHIEK
TAMA UNION WAPELLO
WARREN WAYNE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #5 ON WW 217
VALID 242330Z - 250040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 ENE LWD
TO 5 SE SDA TO 15 SSE OMA TO 5 WSW DNS.
..SQUITIERI..05/24/20
ATTN...WFO...DMX...OAX...EAX...TOP...
&&
STATUS REPORT FOR WS 217
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC001-003-007-009-015-027-029-039-047-049-051-053-073-077-099-
117-121-123-125-127-129-135-137-145-153-155-157-165-169-171-175-
179-181-185-250040-
IA
. IOWA COUNTIES INCLUDED ARE
ADAIR ADAMS APPANOOSE
AUDUBON BOONE CARROLL
CASS CLARKE CRAWFORD
DALLAS DAVIS DECATUR
GREENE GUTHRIE JASPER
LUCAS MADISON MAHASKA
MARION MARSHALL MILLS
MONROE MONTGOMERY PAGE
POLK POTTAWATTAMIE POWESHIEK
SHELBY STORY TAMA
UNION WAPELLO WARREN
WAYNE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 217
VALID 242235Z - 242340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 E LWD TO
10 SE SDA TO 30 E LNK TO 25 NW TQE.
..SQUITIERI..05/24/20
ATTN...WFO...DMX...OAX...EAX...TOP...
&&
STATUS REPORT FOR WS 217
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC001-003-007-009-015-027-029-039-047-049-051-053-071-073-077-
085-099-117-121-123-125-127-129-135-137-145-153-155-157-165-169-
171-175-179-181-185-242340-
IA
. IOWA COUNTIES INCLUDED ARE
ADAIR ADAMS APPANOOSE
AUDUBON BOONE CARROLL
CASS CLARKE CRAWFORD
DALLAS DAVIS DECATUR
FREMONT GREENE GUTHRIE
HARRISON JASPER LUCAS
MADISON MAHASKA MARION
MARSHALL MILLS MONROE
MONTGOMERY PAGE POLK
POTTAWATTAMIE POWESHIEK SHELBY
STORY TAMA UNION
WAPELLO WARREN WAYNE
$$
NEC025-055-153-177-242340-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CASS DOUGLAS SARPY
WASHINGTON
$$
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.
$$
STATUS REPORT #3 ON WW 217
VALID 242130Z - 242240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 W CDJ TO
20 E STJ TO 15 WSW FNB TO 40 WNW BIE.
..SQUITIERI..05/24/20
ATTN...WFO...DMX...OAX...EAX...TOP...
&&
STATUS REPORT FOR WS 217
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC001-003-009-015-027-029-039-047-049-053-071-073-077-085-121-
129-137-145-153-155-159-165-169-173-175-181-242240-
IA
. IOWA COUNTIES INCLUDED ARE
ADAIR ADAMS AUDUBON
BOONE CARROLL CASS
CLARKE CRAWFORD DALLAS
DECATUR FREMONT GREENE
GUTHRIE HARRISON MADISON
MILLS MONTGOMERY PAGE
POLK POTTAWATTAMIE RINGGOLD
SHELBY STORY TAYLOR
UNION WARREN
$$
MOC003-005-061-063-075-081-087-147-227-242240-
MO
. MISSOURI COUNTIES INCLUDED ARE
ANDREW ATCHISON DAVIESS
DEKALB GENTRY HARRISON
HOLT NODAWAY WORTH
$$
NEC023-025-053-055-089-097-109-127-131-147-151-153-155-159-177-
242240-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BUTLER CASS DODGE
DOUGLAS HOLT JOHNSON
LANCASTER NEMAHA OTOE
RICHARDSON SALINE SARPY
SAUNDERS SEWARD WASHINGTON
$$
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.
$$
STATUS REPORT #2 ON WW 217
VALID 242020Z - 242140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NNE CNK
TO 30 ESE STJ TO 15 SSW CDJ.
..SQUITIERI..05/24/20
ATTN...WFO...DMX...OAX...EAX...TOP...
&&
STATUS REPORT FOR WS 217
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC001-003-009-015-027-029-039-047-049-053-071-073-077-085-121-
129-137-145-153-155-159-165-169-173-175-181-242140-
IA
. IOWA COUNTIES INCLUDED ARE
ADAIR ADAMS AUDUBON
BOONE CARROLL CASS
CLARKE CRAWFORD DALLAS
DECATUR FREMONT GREENE
GUTHRIE HARRISON MADISON
MILLS MONTGOMERY PAGE
POLK POTTAWATTAMIE RINGGOLD
SHELBY STORY TAYLOR
UNION WARREN
$$
KSC043-117-131-242140-
KS
. KANSAS COUNTIES INCLUDED ARE
DONIPHAN MARSHALL NEMAHA
$$
MOC003-005-021-025-049-061-063-075-081-087-147-227-242140-
MO
. MISSOURI COUNTIES INCLUDED ARE
ANDREW ATCHISON BUCHANAN
CALDWELL CLINTON DAVIESS
DEKALB GENTRY HARRISON
HOLT NODAWAY WORTH
$$
NEC023-025-053-055-067-095-097-109-127-131-133-147-151-153-155-
159-177-242140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BUTLER CASS DODGE
DOUGLAS GAGE JEFFERSON
JOHNSON LANCASTER NEMAHA
OTOE PAWNEE RICHARDSON
SALINE SARPY SAUNDERS
SEWARD WASHINGTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 217
VALID 242015Z - 242140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NNE CNK
TO 30 ESE STJ TO 15 SSW CDJ.
..SQUITIERI..05/24/20
ATTN...WFO...DMX...OAX...EAX...TOP...
&&
STATUS REPORT FOR WS 217
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC001-003-009-015-027-029-039-047-049-053-071-073-077-085-121-
129-137-145-153-155-159-165-169-173-175-181-242140-
IA
. IOWA COUNTIES INCLUDED ARE
ADAIR ADAMS AUDUBON
BOONE CARROLL CASS
CLARKE CRAWFORD DALLAS
DECATUR FREMONT GREENE
GUTHRIE HARRISON MADISON
MILLS MONTGOMERY PAGE
POLK POTTAWATTAMIE RINGGOLD
SHELBY STORY TAYLOR
UNION WARREN
$$
KSC043-117-131-242140-
KS
. KANSAS COUNTIES INCLUDED ARE
DONIPHAN MARSHALL NEMAHA
$$
MOC003-005-021-025-049-061-063-075-081-087-147-227-242140-
MO
. MISSOURI COUNTIES INCLUDED ARE
ANDREW ATCHISON BUCHANAN
CALDWELL CLINTON DAVIESS
DEKALB GENTRY HARRISON
HOLT NODAWAY WORTH
$$
NEC023-025-053-055-067-095-097-109-127-131-133-147-151-153-155-
159-177-242140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BUTLER CASS DODGE
DOUGLAS GAGE JEFFERSON
JOHNSON LANCASTER NEMAHA
OTOE PAWNEE RICHARDSON
SALINE SARPY SAUNDERS
SEWARD WASHINGTON
$$
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 (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (50%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
High (70%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (40%)
|
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.