Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 509
NWS Storm Prediction Center Norman OK
520 PM CDT Sat Jul 6 2024
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 afternoon from 520 PM until Midnight
CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
SUMMARY...A cluster of intense thunderstorms over south-central
Nebraska will track eastward through the evening across the watch
area. Locally damaging wind gusts and hail are possible with the
strongest cells.
The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 40 miles north of
Concordia KS to 25 miles east of Falls City NE. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
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 508...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
27025.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 509 SEVERE TSTM IA KS MO NE 062220Z - 070500Z
AXIS..50 STATUTE MILES NORTH AND SOUTH OF LINE..
40N CNK/CONCORDIA KS/ - 25E FNB/FALLS CITY NE/
..AVIATION COORDS.. 45NM N/S /66W PWE - 50NNW MCI/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27025.
LAT...LON 40849765 40799513 39349513 39409765
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 509 Status Report Messages:
STATUS REPORT #1 ON WW 509
VALID 070040Z - 070140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNE SLN
TO 10 N BIE TO 10 ESE OMA.
..MOORE..07/07/24
ATTN...WFO...OAX...EAX...TOP...
&&
STATUS REPORT FOR WS 509
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC071-145-070140-
IA
. IOWA COUNTIES INCLUDED ARE
FREMONT PAGE
$$
KSC005-013-027-043-085-117-131-149-161-201-070140-
KS
. KANSAS COUNTIES INCLUDED ARE
ATCHISON BROWN CLAY
DONIPHAN JACKSON MARSHALL
NEMAHA POTTAWATOMIE RILEY
WASHINGTON
$$
MOC005-087-070140-
MO
. MISSOURI COUNTIES INCLUDED ARE
ATCHISON HOLT
$$
NEC067-097-127-131-133-147-070140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
GAGE JOHNSON NEMAHA
OTOE PAWNEE RICHARDSON
$$
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 (<5%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
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 (70%)
|
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.