Severe Thunderstorm Watch 310

Issued

Jun 13, 2013, 4:04 PM MDT (22:04 UTC)

Expired

Jun 13, 2013, 8:30 PM MDT

In force

4 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

65 kt

The Denver radar (KFTG), 118 km from the middle of the area, began a volume at 22:06 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

2%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

30%

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

80%

• Mesoscale Discussion 1066Jun 13, 1:14 PM MDT
• Mesoscale Discussion 1072Jun 13, 6:46 PM MDT

961 
WWUS20 KWNS 132202
SEL0  
SPC WW 132202
COZ000-KSZ000-NEZ000-140400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 310
NWS STORM PREDICTION CENTER NORMAN OK
405 PM MDT THU JUN 13 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
  EASTERN COLORADO
  NORTHWEST KANSAS
  EXTREME SOUTHWEST NEBRASKA

* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 405 PM UNTIL
  1000 PM MDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL DAMAGING WIND GUSTS LIKELY WITH A FEW SIGNIFICANT GUSTS
    TO 75 MPH POSSIBLE
  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2
    INCHES IN DIAMETER POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85
STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH OF
AKRON COLORADO TO 65 MILES SOUTH OF BURLINGTON COLORADO.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).

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 306...WW 307...WW
308...WW 309...

DISCUSSION...THUNDERSTORMS ARE INCREASING IN COVERAGE ACROSS PARTS
OF EASTERN CO.  THESE STORMS ARE IN A REGION OF VERY STEEP LOW LEVEL
LAPSE RATES AND MODERATE CAPE.  STRONG TO SEVERE STORMS CAPABLE OF
DAMAGING WINDS AND HAIL ARE LIKELY TO AFFECT THE WATCH AREA THROUGH
MUCH OF THE EVENING.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 24025.


...HART

Severe Thunderstorm Watches in Colorado, 2013Severe Thunderstorm Watches in Kansas, 2013Severe Thunderstorm Watches in Nebraska, 2013Every severe thunderstorm watch in 2013

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.