Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 566
NWS Storm Prediction Center Norman OK
400 AM CDT Tue Jul 30 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast Iowa
Northwest Illinois
Far Northeast Missouri
* Effective this Tuesday morning from 400 AM until 900 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
SUMMARY...A cluster of storms will continue southeastward across the
region early this morning and potentially pose a risk for damaging
winds.
The severe thunderstorm watch area is approximately along and 35
statute miles north and south of a line from 10 miles west southwest
of Ottumwa IA to 30 miles east of Burlington IA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU6).
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
1 inch. Extreme turbulence and surface wind gusts to 65 knots. A few
cumulonimbi with maximum tops to 500. Mean storm motion vector
30040.
...Guyer
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW6
WW 566 SEVERE TSTM IA IL MO 300900Z - 301400Z
AXIS..35 STATUTE MILES NORTH AND SOUTH OF LINE..
10WSW OTM/OTTUMWA IA/ - 30E BRL/BURLINGTON IA/
..AVIATION COORDS.. 30NM N/S /52ESE DSM - 49WSW BDF/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..65 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 30040.
LAT...LON 41559263 41299056 40279056 40549263
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU6.
Watch 566 Status Report Messages:
STATUS REPORT #2 ON WW 566
VALID 301120Z - 301240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 S BRL TO
25 NE BRL TO 20 S MLI.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1740.
..GRAMS..07/30/24
ATTN...WFO...DVN...
&&
STATUS REPORT FOR WS 566
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC067-071-109-187-301240-
IL
. ILLINOIS COUNTIES INCLUDED ARE
HANCOCK HENDERSON MCDONOUGH
WARREN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 566
VALID 301025Z - 301140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 NE IRK TO
35 WNW BRL TO 30 SSW CID.
..GRAMS..07/30/24
ATTN...WFO...DVN...
&&
STATUS REPORT FOR WS 566
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC067-071-109-187-301140-
IL
. ILLINOIS COUNTIES INCLUDED ARE
HANCOCK HENDERSON MCDONOUGH
WARREN
$$
IAC057-087-111-115-183-301140-
IA
. IOWA COUNTIES INCLUDED ARE
DES MOINES HENRY LEE
LOUISA WASHINGTON
$$
MOC045-301140-
MO
. MISSOURI COUNTIES INCLUDED ARE
CLARK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (10%)
|
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
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Low (10%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (<5%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (60%)
|
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 
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