The NWS has issued a SEVERE THUNDERSTORM WATCH for the City of ST. Louis until 10 PM 5/14/18 #stlwx 
Scattered severe thunderstorms are likely this afternoon into the evening cross parts of central and eastern Missouri as well as west central and southwest Illinois. Additional thunderstorm development is possible later tonight. The primary severe weather threats will be damaging winds and large hail...
Hazards: Scattered severe thunderstorms possible.
Areas Impacted: Primarily parts of northeast and central Missouri and westcentral Illinois.
Timing & Duration: The primary severe weather threat will be this afternoon and this evening. Additional thunderstorm development is possible overnight.
Impacts: Damaging wind and large hail are the main threats.
Certainty & Considerations: There is high confidence in scattered severe thunderstorms this afternoon and evening. There is low to moderate confidence in additional severe storm development overnight.
Instructions:
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.
Address/Location
City of St. Louis Emergency Management
1915 Olive St
St. Louis, MO 63103
Contact
Emergency: 9-1-1
Alert Details
- Severity:
- Severe - Significant threat to life or property
- Urgency:
- Future - Responsive action SHOULD be taken in the near future
- Certainty:
- Likely (p > ~50%)
- Category:
- Meteorological (inc. flood)
- Event:
- Severe Thunderstorm Statement