Tornado Watch 361

Issued

Jun 6, 2012, 3:01 PM MDT (21:01 UTC)

Expired

Jun 6, 2012, 11:00 PM MDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Cheyenne radar (KCYS), 69 km from the middle of the area, began a volume at 21:04 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

30%

One or more EF2 to EF5 tornadoes

10%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

10%

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

70%

• Mesoscale Discussion 1086Jun 6, 12:54 PM MDT
• Mesoscale Discussion 1090Jun 6, 6:47 PM MDT
• Mesoscale Discussion 1091Jun 6, 8:37 PM MDT

753 
WWUS20 KWNS 062103
SEL1
SPC WW 062103
COZ000-NEZ000-WYZ000-070300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 361
NWS STORM PREDICTION CENTER NORMAN OK
300 PM MDT WED JUN 6 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

       NORTHEAST COLORADO
       THE NEBRASKA PANHANDLE
       SOUTHEAST WYOMING

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 300 PM UNTIL
900 PM MDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHWEST OF CHADRON
NEBRASKA TO 45 MILES WEST SOUTHWEST OF LIMON COLORADO.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU1).

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.

DISCUSSION...STORMS ARE BEGINNING TO DEVELOP ALONG THE WRN EDGE OF
DEEPER MOISTURE OVER THE SERN WY/NEB PANHANDLE BORDER REGION...AND
ALONG A CONVERGENCE LINE OVER NERN CO.  BOTH BOUNDARIES ARE MOVING
NWWD ACCORDING TO SATELLITE/RADAR DATA...SUGGESTING STORM THREAT MAY
GRADUALLY DEVELOP WWD WHERE STRONGER SSWLY WINDS ALOFT ARE LOCATED.
STEEP LAPSE RATES AND STRONG HEATING WILL PROMOTE FORMATION OF LARGE
HAIL WITH MORE INTENSE CELLS...WITH STRONG WIND GUSTS ALSO POSSIBLE.
 THERE IS ALSO POTENTIAL FOR SEVERAL TORNADOES TO
DEVELOP...ESPECIALLY LONG THE DENVER CONVERGENCE ZONE IN NERN CO.

AVIATION...TORNADOES AND 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
450. MEAN STORM MOTION VECTOR 20020.


...WEISS

Tornado Watches in Colorado, 2012Tornado Watches in Nebraska, 2012Tornado Watches in Wyoming, 2012Every tornado watch in 2012

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.