Severe Thunderstorm Watch 170

Issued

Apr 20, 2011, 2:04 PM CDT (19:04 UTC)

Expired

Apr 20, 2011, 9:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Little Rock radar (KLZK), 78 km from the middle of the area, began a volume at 19:04 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

20%

One or more EF2 to EF5 tornadoes

5%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

20%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 490Apr 20, 12:46 PM CDT
• Mesoscale Discussion 494Apr 20, 5:24 PM CDT
• Mesoscale Discussion 496Apr 20, 5:56 PM CDT

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Severe Thunderstorm Watches in Arkansas, 2011Every severe thunderstorm watch in 2011

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.