Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 191
NWS STORM PREDICTION CENTER NORMAN OK
1250 PM CDT SUN APR 26 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
PARTS OF WESTERN AND CENTRAL IOWA
PARTS OF NORTHWEST MISSOURI
PARTS OF SOUTHEAST NEBRASKA
EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1250 PM UNTIL
800 PM CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 15 MILES WEST OF FALLS CITY
NEBRASKA TO 20 MILES NORTHEAST OF FORT DODGE IOWA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU1).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
OTHER WATCH INFORMATION...CONTINUE...WW 189...WW 190...
DISCUSSION...WARM FRONT MOVING NWD THRU WRN IA/SERN NE AHEAD OF
SURFACE WV NEAR CNK. THIS PLACES WATCH AREA IN FAVORABLE
ENVIRONMENT FOR DEVELOPMENT OF TORNADIC SUPERCELLS AS SHEAR AND
INSTABILITY ARE QUITE STRONG IN WARM SECTOR.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24035.
...HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 191 TORNADO IA MO NE 261750Z - 270100Z
AXIS..80 STATUTE MILES EAST AND WEST OF LINE..
15W FNB/FALLS CITY NE/ - 20NE FOD/FORT DODGE IA/
..AVIATION COORDS.. 70NM E/W /17ESE PWE - 18ENE FOD/
HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24035.
LAT...LON 40069740 42749550 42749233 40069437
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 191 Status Report Messages:
STATUS REPORT #3 ON WW 191
VALID 262040Z - 262140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..HURLBUT..04/26/09
ATTN...WFO...DMX...OAX...EAX...
&&
STATUS REPORT FOR WT 191
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC001-003-009-015-023-025-027-029-039-047-049-053-069-071-073-
075-077-079-083-085-091-099-121-127-129-137-145-151-153-155-159-
161-165-169-173-175-181-187-197-262140-
IA
. IOWA COUNTIES INCLUDED ARE
ADAIR ADAMS AUDUBON
BOONE BUTLER CALHOUN
CARROLL CASS CLARKE
CRAWFORD DALLAS DECATUR
FRANKLIN FREMONT GREENE
GRUNDY GUTHRIE HAMILTON
HARDIN HARRISON HUMBOLDT
JASPER MADISON MARSHALL
MILLS MONTGOMERY PAGE
POCAHONTAS POLK POTTAWATTAMIE
RINGGOLD SAC SHELBY
STORY TAYLOR UNION
WARREN WEBSTER WRIGHT
$$
MOC003-005-075-081-087-147-227-262140-
MO
. MISSOURI COUNTIES INCLUDED ARE
ANDREW ATCHISON GENTRY
HARRISON HOLT NODAWAY
WORTH
$$
NEC025-055-067-095-097-109-127-131-133-147-153-262140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CASS DOUGLAS GAGE
JEFFERSON JOHNSON LANCASTER
NEMAHA OTOE PAWNEE
RICHARDSON SARPY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 191
VALID 261935Z - 262040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..HURLBUT..04/26/09
ATTN...WFO...DMX...OAX...EAX...
&&
STATUS REPORT FOR WT 191
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC001-003-009-015-023-025-027-029-039-047-049-053-069-071-073-
075-077-079-083-085-091-099-121-127-129-137-145-151-153-155-159-
161-165-169-173-175-181-187-197-262040-
IA
. IOWA COUNTIES INCLUDED ARE
ADAIR ADAMS AUDUBON
BOONE BUTLER CALHOUN
CARROLL CASS CLARKE
CRAWFORD DALLAS DECATUR
FRANKLIN FREMONT GREENE
GRUNDY GUTHRIE HAMILTON
HARDIN HARRISON HUMBOLDT
JASPER MADISON MARSHALL
MILLS MONTGOMERY PAGE
POCAHONTAS POLK POTTAWATTAMIE
RINGGOLD SAC SHELBY
STORY TAYLOR UNION
WARREN WEBSTER WRIGHT
$$
MOC003-005-075-081-087-147-227-262040-
MO
. MISSOURI COUNTIES INCLUDED ARE
ANDREW ATCHISON GENTRY
HARRISON HOLT NODAWAY
WORTH
$$
NEC025-055-067-095-097-109-127-131-133-147-153-262040-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CASS DOUGLAS GAGE
JEFFERSON JOHNSON LANCASTER
NEMAHA OTOE PAWNEE
RICHARDSON SARPY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 191
VALID 261835Z - 261940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..HURLBUT..04/26/09
ATTN...WFO...DMX...OAX...EAX...
&&
STATUS REPORT FOR WT 191
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC001-003-009-015-023-025-027-029-039-047-049-053-069-071-073-
075-077-079-083-085-091-099-121-127-129-137-145-151-153-155-159-
161-165-169-173-175-181-187-197-261940-
IA
. IOWA COUNTIES INCLUDED ARE
ADAIR ADAMS AUDUBON
BOONE BUTLER CALHOUN
CARROLL CASS CLARKE
CRAWFORD DALLAS DECATUR
FRANKLIN FREMONT GREENE
GRUNDY GUTHRIE HAMILTON
HARDIN HARRISON HUMBOLDT
JASPER MADISON MARSHALL
MILLS MONTGOMERY PAGE
POCAHONTAS POLK POTTAWATTAMIE
RINGGOLD SAC SHELBY
STORY TAYLOR UNION
WARREN WEBSTER WRIGHT
$$
MOC003-005-075-081-087-147-227-261940-
MO
. MISSOURI COUNTIES INCLUDED ARE
ANDREW ATCHISON GENTRY
HARRISON HOLT NODAWAY
WORTH
$$
NEC025-055-067-095-097-109-127-131-133-147-153-261940-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CASS DOUGLAS GAGE
JEFFERSON JOHNSON LANCASTER
NEMAHA OTOE PAWNEE
RICHARDSON SARPY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (60%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Mod (30%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (50%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
High (70%)
|
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% (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.