MIL-OSI USA: SPC Tornado Watch 236

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Source: US National Oceanic and Atmospheric Administration

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
Tornado Watch Number 236
NWS Storm Prediction Center Norman OK
625 PM CDT Fri May 24 2019

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of
Eastern Iowa
Northern and central Illinois
Far northeast Missouri

* Effective this Friday night from 625 PM until Midnight CDT.

* Primary threats include…
A few tornadoes possible
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 65 mph possible

SUMMARY…A few supercells should develop along a residual boundary
from eastern Iowa into west-central Illinois. This activity should
spread east-northeast in northern Illinois through late evening.

The tornado watch area is approximately along and 85 statute miles
north and south of a line from 45 miles north northwest of
Burlington IA to 40 miles north northeast of Bloomington IL. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU6).

PRECAUTIONARY/PREPAREDNESS ACTIONS…

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 232…WW 233…WW
234…WW 235…

AVIATION…Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2 inches. Extreme turbulence and surface wind
gusts to 55 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 25030.

…Grams

Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW6
WW 236 TORNADO IA IL MO 242325Z – 250500Z
AXIS..85 STATUTE MILES NORTH AND SOUTH OF LINE..
45NNW BRL/BURLINGTON IA/ – 40NNE BMI/BLOOMINGTON IL/
..AVIATION COORDS.. 75NM N/S /11SE IOW – 36SSW JOT/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..55 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 25030.

LAT…LON 42619145 42228862 39778862 40159145

THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU6.

Watch 236 Status Report Message has not been issued yet.

Note:  Click for Complete Product Text.TornadoesProbability of 2 or more tornadoes

Mod (50%)

Probability of 1 or more strong (EF2-EF5) tornadoes

Low (20%)

WindProbability of 10 or more severe wind events

Mod (40%)

Probability of 1 or more wind events > 65 knots

Low (20%)

HailProbability of 10 or more severe hail events

Mod (50%)

Probability of 1 or more hailstones > 2 inches

Mod (30%)

Combined Severe Hail/WindProbability 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% (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.

MIL OSI USA News

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