Severe Thunderstorm Watch 62

Issued

Mar 27, 2021, 4:44 PM CDT (21:44 UTC)

Expired

Mar 27, 2021, 10:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The St Louis radar (KLSX), 67 km from the middle of the area, began a volume at 21:47 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Two or more tornadoes

10%

One or more EF2 to EF5 tornadoes

5%

Ten or more severe wind reports

40%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 281 Severe potential...watch possibleMar 27, 2:34 PM CDT
• Mesoscale Discussion 286 Severe thunderstorm watch 62Mar 27, 6:16 PM CDT
• Mesoscale Discussion 290 Severe thunderstorm watch 62Mar 27, 7:58 PM CDT

302 
WWUS20 KWNS 272142
SEL2  
SPC WW 272142
ILZ000-MOZ000-280200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 62
NWS Storm Prediction Center Norman OK
445 PM CDT Sat Mar 27 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Central Illinois
  South-central to east-central Missouri

* Effective this Saturday afternoon and evening from 445 PM until
  900 PM CDT.

* Primary threats include...
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...Multiple supercells with large hail as the primary initial
hazard should consolidate into a broken squall line with the risk
for damaging wind gusts increasing this evening.

The severe thunderstorm watch area is approximately along and 55
statute miles east and west of a line from 70 miles northeast of
Alton IL to 5 miles east southeast of West Plains MO. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU2).

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 58...WW 59...WW 60...WW
61...

AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
25035.

...Grams

Severe Thunderstorm Watches in Illinois, 2021Severe Thunderstorm Watches in Missouri, 2021Every severe thunderstorm watch in 2021

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.