SPC Severe Thunderstorm Watch 504

WW 504 SEVERE TSTM IA IL MO 101720Z – 110000Z

WW 0504 Image

Severe Thunderstorm Watch Number 504
NWS Storm Prediction Center Norman OK
1120 AM CST Tue Nov 10 2020

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Eastern Iowa
  Western Illinois
  Northeast Missouri

* Effective this Tuesday morning and evening from 1120 AM until
  600 PM CST.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph likely
  A tornado or two possible

SUMMARY...Thunderstorms are beginning to intensify along a cold
front over Missouri and southeast Iowa.  These storms will track
quickly northeastward across the watch area, posing a risk of
locally damaging wind gusts and a tornado or two.

The severe thunderstorm watch area is approximately along and 65
statute miles east and west of a line from 20 miles east southeast
of Jefferson City MO to 30 miles northwest of Rockford IL. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU4).


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


AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 450. Mean storm motion vector


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