MIL-OSI USA: SPC Tornado Watch 215

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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.
SEL5

URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 215
NWS Storm Prediction Center Norman OK
1025 PM CDT Wed May 22 2019

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of
Illinois
Far northwest Indiana
East-central Missouri

* Effective this Wednesday night and Thursday morning from 1025
PM until 500 AM CDT.

* Primary threats include…
A few tornadoes and a couple intense tornadoes possible
Widespread damaging winds likely with isolated significant gusts
to 80 mph possible
Isolated large hail events to 1.5 inches in diameter possible

SUMMARY…Clusters of supercells and linear bowing segments should
consolidate and spread east overnight. Damaging winds and a few
tornadoes are the primary hazards.

The tornado watch area is approximately along and 75 statute miles
east and west of a line from 40 miles south southwest of Saint Louis
MO to 70 miles north northwest of Danville IL. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU5).

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 212…WW 213…WW 214…

AVIATION…Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 550. Mean
storm motion vector 26040.

…Grams

Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW5
WW 215 TORNADO IL IN MO 230325Z – 231000Z
AXIS..75 STATUTE MILES EAST AND WEST OF LINE..
40SSW STL/SAINT LOUIS MO/ – 70NNW DNV/DANVILLE IL/
..AVIATION COORDS.. 65NM E/W /38NNW FAM – 27SSE JOT/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 26040.

LAT…LON 38209202 41138955 41138666 38208926

THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.

Watch 215 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

Mod (30%)

WindProbability of 10 or more severe wind events

High (80%)

Probability of 1 or more wind events > 65 knots

Mod (50%)

HailProbability of 10 or more severe hail events

Low (20%)

Probability of 1 or more hailstones > 2 inches

Low (10%)

Combined Severe Hail/WindProbability of 6 or more combined severe hail/wind events

High (>95%)

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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