Tornado Watch 187

Issued

May 21, 2016, 2:07 PM MDT (20:07 UTC)

Expired

May 21, 2016, 10:31 PM MDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

The Goodland radar (KGLD), 47 km from the middle of the area, began a volume at 20:07 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

50%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

80%

One or more hailstones of 2 inches or more

50%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 664May 21, 1:25 PM MDT
• Mesoscale Discussion 668May 21, 4:34 PM MDT
• Mesoscale Discussion 672May 21, 8:02 PM MDT

667 
WWUS20 KWNS 212005
SEL7  
SPC WW 212005
COZ000-KSZ000-NEZ000-220300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 187
NWS STORM PREDICTION CENTER NORMAN OK
310 PM CDT SAT MAY 21 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  EASTERN COLORADO
  WESTERN KANSAS
  EXTREME SOUTHWEST NEBRASKA

* EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 310 PM UNTIL
  1000 PM CDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES POSSIBLE
  WIDESPREAD LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL
    EVENTS TO 3 INCHES IN DIAMETER POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

SUMMARY...THUNDERSTORMS ARE EXPECTED TO FORM NEAR THE CO/KS BORDER
THIS AFTERNOON AND TRACK SLOWLY EASTWARD ACROSS THE WATCH AREA. 
BACKED LOW LEVEL WINDS AND INCREASING INSTABILITY WILL SUPPORT THE
RISK OF SUPERCELLS CAPABLE OF VERY LARGE HAIL...DAMAGING WINDS...AND
A FEW TORNADOES.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE
MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH OF GOODLAND
KANSAS TO 25 MILES WEST OF LIBERAL KANSAS.  FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU7).

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 186...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25020.


...HART

Tornado Watches in Kansas, 2016Tornado Watches in Colorado, 2016Tornado Watches in Nebraska, 2016Every tornado watch in 2016

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.