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 626
NWS Storm Prediction Center Norman OK
910 PM CDT Thu Aug 15 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
North-central and northwestern Illinois
* Effective this Thursday night and Friday morning from 910 PM
until 300 AM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY...Clusters of thunderstorms may organize to severe levels as
they move eastward over the Mississippi River from IA, and into a
favorably moist and unstable air mass. Damaging gusts are the main
concern, with isolated large hail also possible.
The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 35 miles south of Peoria
IL to 55 miles north of Peoria IL. 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 623...WW 624...WW 625...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
27025.
...Edwards
SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 626
NWS Storm Prediction Center Norman OK
910 PM CDT Thu Aug 15 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
North-central and northwestern Illinois
* Effective this Thursday night and Friday morning from 910 PM
until 300 AM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY...Clusters of thunderstorms may organize to severe levels as
they move eastward over the Mississippi River from IA, and into a
favorably moist and unstable air mass. Damaging gusts are the main
concern, with isolated large hail also possible.
The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 35 miles south of Peoria
IL to 55 miles north of Peoria IL. 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 623...WW 624...WW 625...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
27025.
...Edwards
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW6
WW 626 SEVERE TSTM IL 160210Z - 160800Z
AXIS..70 STATUTE MILES EAST AND WEST OF LINE..
35S PIA/PEORIA IL/ - 55N PIA/PEORIA IL/
..AVIATION COORDS.. 60NM E/W /46NW AXC - 19NNW BDF/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 27025.
LAT...LON 40169101 41469103 41468833 40168835
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU6.
Watch 626 Status Report Messages:
STATUS REPORT #3 ON WW 626
VALID 160700Z - 160840Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NW SPI TO
40 NE BMI.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1918
..MOSIER..08/16/24
ATTN...WFO...DVN...ILX...LOT...
&&
STATUS REPORT FOR WS 626
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC039-107-113-125-160840-
IL
. ILLINOIS COUNTIES INCLUDED ARE
DE WITT LOGAN MCLEAN
MASON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 626
VALID 160435Z - 160540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM BRL TO 35 NW
PIA TO 25 E MLI.
..GOSS..08/16/24
ATTN...WFO...DVN...ILX...LOT...
&&
STATUS REPORT FOR WS 626
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC011-039-057-067-071-095-099-105-107-109-113-123-125-143-155-
175-179-187-203-160540-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BUREAU DE WITT FULTON
HANCOCK HENDERSON KNOX
LA SALLE LIVINGSTON LOGAN
MCDONOUGH MCLEAN MARSHALL
MASON PEORIA PUTNAM
STARK TAZEWELL WARREN
WOODFORD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 626
VALID 160335Z - 160440Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GOSS..08/16/24
ATTN...WFO...DVN...ILX...LOT...
&&
STATUS REPORT FOR WS 626
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC011-039-057-067-071-073-095-099-105-107-109-113-123-125-131-
143-155-175-179-187-203-160440-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BUREAU DE WITT FULTON
HANCOCK HENDERSON HENRY
KNOX LA SALLE LIVINGSTON
LOGAN MCDONOUGH MCLEAN
MARSHALL MASON MERCER
PEORIA PUTNAM STARK
TAZEWELL WARREN WOODFORD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (50%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (20%)
|
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.
weather.gov 
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