Tornado Watch 182

Issued

May 19, 2013, 2:14 PM CDT (19:14 UTC)

Expired

May 19, 2013, 10:47 PM CDT

In force

9 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

70 kt

The Norman radar (KTLX), 69 km from the middle of the area, began a volume at 19:15 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

70%

One or more EF2 to EF5 tornadoes

30%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

80%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 697May 19, 12:51 PM CDT
• Mesoscale Discussion 698May 19, 1:45 PM CDT
• Mesoscale Discussion 703May 19, 4:37 PM CDT
• Mesoscale Discussion 706May 19, 5:08 PM CDT
• Mesoscale Discussion 709May 19, 6:27 PM CDT
• Mesoscale Discussion 714May 19, 8:53 PM CDT

453 
WWUS20 KWNS 191920
SEL2  
SPC WW 191920
OKZ000-200400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 182
NWS STORM PREDICTION CENTER NORMAN OK
215 PM CDT SUN MAY 19 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  CENTRAL AND EASTERN OKLAHOMA

* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 215 PM UNTIL
  1100 PM CDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES LIKELY WITH A FEW INTENSE TORNADOES POSSIBLE
  NUMEROUS LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL
    EVENTS TO 3 INCHES IN DIAMETER POSSIBLE
  SEVERAL DAMAGING WIND GUSTS WITH A FEW SIGNIFICANT GUSTS TO 80
    MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 105 STATUTE
MILES EAST AND WEST OF A LINE FROM 15 MILES NORTHEAST OF
BARTLESVILLE OKLAHOMA TO 25 MILES SOUTH OF ARDMORE OKLAHOMA.  FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU2).

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 179...WW 180...WW 181...

DISCUSSION...THE INITIATION OF DISCRETE SUPERCELLS APPEARS LIKELY
ALONG THE DRYLINE ACROSS CENTRAL OKLAHOMA DURING THE NEXT FEW
HOURS...BEFORE ADVECTING AWAY FROM THE DRYLINE ON 40-50 KT DEEP
LAYER SOUTHWESTERLY MEAN FLOW.  AS ACTIVITY PROGRESSES THROUGH A
MOIST UNSTABLE BOUNDARY LAYER WITH SIZABLE CAPE...THE RISK FOR VERY
LARGE HAIL AND TORNADOES IS EXPECTED TO INCREASE THROUGH THE EVENING
HOURS.  BY EARLY EVENING...A STRENGTHENING SOUTHERLY LOW-LEVEL JET
WILL CONTINUE TO ENLARGE LOW-LEVEL HODOGRAPHS...MAINTAINING THE RISK
FOR TORNADOES ACROSS EASTERN OKLAHOMA.  A COUPLE OF LONG-LIVED/LONG
TRACK SUPERCELLS ARE POSSIBLE...WITH A RISK FOR A FEW STRONG
TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25040.


...KERR

Tornado Watches in Oklahoma, 2013Every tornado 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.