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Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 189
NWS STORM PREDICTION CENTER NORMAN OK
935 AM CDT SUN APR 26 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN IOWA
SMALL PART OF NORTHWEST MISSOURI
MUCH OF EASTERN NEBRASKA
EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 935 AM UNTIL 400
PM CDT.
HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES SOUTHWEST OF
BEATRICE NEBRASKA TO 30 MILES NORTHEAST OF SPENCER IOWA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU9).
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 188...
DISCUSSION...STRONG WARM ADVECTION OCCURRING ACROSS THE WATCH AREA
WITH 50-60KT LLJ. WITH A VERY MOIST/UNSTABLE AIR MASS STREAMING NWD
ACROSS SHALLOW COLD LAYER...ELEVATED SEVERE
THUNDERSTORMS...INCLUDING SUPERCELLS ARE LIKELY. PRIMARY THREAT
WILL BE LARGE HAIL WITH POTENTIAL FOR WIND INCREASING DURING
AFTERNOON AS BOUNDARY LAYER DESTABILIZES SRN PORTION OF WATCH.
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 22035.
...HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 189 SEVERE TSTM IA MO NE 261435Z - 262100Z
AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
25SW BIE/BEATRICE NE/ - 30NE SPW/SPENCER IA/
..AVIATION COORDS.. 55NM E/W /41WSW PWE - 55NNW FOD/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 22035.
LAT...LON 40029830 43479601 43479343 40029586
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 189 Status Report Messages:
STATUS REPORT #4 ON WW 189
VALID 262035Z - 262140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NW CNK TO
20 WNW FRM.
..HURLBUT..04/26/09
ATTN...WFO...DMX...FSD...OAX...EAX...GID...
&&
STATUS REPORT FOR WS 189
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC021-035-041-059-063-081-093-109-133-147-189-193-262140-
IA
. IOWA COUNTIES INCLUDED ARE
BUENA VISTA CHEROKEE CLAY
DICKINSON EMMET HANCOCK
IDA KOSSUTH MONONA
PALO ALTO WINNEBAGO WOODBURY
$$
NEC021-023-053-059-151-155-159-169-177-262140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BURT BUTLER DODGE
FILLMORE SALINE SAUNDERS
SEWARD THAYER WASHINGTON
$$
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.
$$
STATUS REPORT #3 ON WW 189
VALID 261935Z - 262040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 WNW CNK
TO 10 ENE OTG.
..HURLBUT..04/26/09
ATTN...WFO...DMX...FSD...OAX...EAX...GID...
&&
STATUS REPORT FOR WS 189
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC021-035-041-059-063-081-093-109-133-141-147-189-193-262040-
IA
. IOWA COUNTIES INCLUDED ARE
BUENA VISTA CHEROKEE CLAY
DICKINSON EMMET HANCOCK
IDA KOSSUTH MONONA
O'BRIEN PALO ALTO WINNEBAGO
WOODBURY
$$
NEC021-023-037-039-053-059-129-151-155-159-169-173-177-262040-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BURT BUTLER COLFAX
CUMING DODGE FILLMORE
NUCKOLLS SALINE SAUNDERS
SEWARD THAYER THURSTON
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 189
VALID 261830Z - 261940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 S HSI TO
20 ENE OTG.
..HURLBUT..04/26/09
ATTN...WFO...DMX...FSD...OAX...EAX...GID...
&&
STATUS REPORT FOR WS 189
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC021-035-041-059-063-081-093-109-133-141-147-189-193-261940-
IA
. IOWA COUNTIES INCLUDED ARE
BUENA VISTA CHEROKEE CLAY
DICKINSON EMMET HANCOCK
IDA KOSSUTH MONONA
O'BRIEN PALO ALTO WINNEBAGO
WOODBURY
$$
NEC021-023-037-039-053-059-129-151-155-159-169-173-177-261940-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BURT BUTLER COLFAX
CUMING DODGE FILLMORE
NUCKOLLS SALINE SAUNDERS
SEWARD THAYER THURSTON
WASHINGTON
$$
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.
$$
STATUS REPORT #1 ON WW 189
VALID 261735Z - 261840Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..HURLBUT..04/26/09
ATTN...WFO...DMX...FSD...OAX...EAX...GID...
&&
STATUS REPORT FOR WS 189
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC009-021-025-027-029-035-041-047-059-063-071-073-077-081-085-
091-093-109-129-133-137-141-143-145-147-149-151-155-161-165-167-
187-189-193-197-261840-
IA
. IOWA COUNTIES INCLUDED ARE
AUDUBON BUENA VISTA CALHOUN
CARROLL CASS CHEROKEE
CLAY CRAWFORD DICKINSON
EMMET FREMONT GREENE
GUTHRIE HANCOCK HARRISON
HUMBOLDT IDA KOSSUTH
MILLS MONONA MONTGOMERY
O'BRIEN OSCEOLA PAGE
PALO ALTO PLYMOUTH POCAHONTAS
POTTAWATTAMIE SAC SHELBY
SIOUX WEBSTER WINNEBAGO
WOODBURY WRIGHT
$$
MOC005-261840-
MO
. MISSOURI COUNTIES INCLUDED ARE
ATCHISON
$$
NEC021-023-025-035-037-039-043-051-053-055-059-067-081-095-097-
109-127-129-131-133-141-143-147-151-153-155-159-167-169-173-177-
179-185-261840-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BURT BUTLER CASS
CLAY COLFAX CUMING
DAKOTA DIXON DODGE
DOUGLAS FILLMORE GAGE
HAMILTON JEFFERSON JOHNSON
LANCASTER NEMAHA NUCKOLLS
OTOE PAWNEE PLATTE
POLK RICHARDSON SALINE
SARPY SAUNDERS SEWARD
STANTON THAYER THURSTON
WASHINGTON WAYNE YORK
$$
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 (F2-F5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
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 (80%)
|
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% (F2-F5 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 
