Tornado Watch 157

Issued

May 9, 2016, 7:23 PM CDT (00:23 UTC)

Expired

May 10, 2016, 3:41 AM CDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

60 kt

The Little Rock radar (KLZK), 130 km from the middle of the area, began a volume at 00:23 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

60%

One or more EF2 to EF5 tornadoes

40%

Ten or more severe wind reports

40%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

40%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 571May 9, 5:13 PM CDT
• Mesoscale Discussion 573May 9, 5:49 PM CDT
• Mesoscale Discussion 574May 9, 6:38 PM CDT
• Mesoscale Discussion 576May 9, 8:01 PM CDT
• Mesoscale Discussion 580May 9, 11:15 PM CDT
• Mesoscale Discussion 581May 10, 1:42 AM CDT

756 
WWUS20 KWNS 100021
SEL7  
SPC WW 100021
ARZ000-LAZ000-MOZ000-OKZ000-TXZ000-100700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 157
NWS STORM PREDICTION CENTER NORMAN OK
720 PM CDT MON MAY 9 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHWEST THROUGH NORTHEAST ARKANSAS
  NORTHWEST LOUISIANA
  THE MISSOURI BOOTHEEL
  SOUTHEAST OKLAHOMA
  NORTHEAST TEXAS

* EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 720 PM
  UNTIL 200 AM CDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES POSSIBLE
  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
    TO 2.5 INCHES IN DIAMETER POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

SUMMARY...SUPERCELLS NOW NEAR THE RED RIVER ALONG THE OK-TX BORDER
EXPECTED TO CONTINUE GENERALLY E OR ENE THROUGH LATER TONIGHT...WITH
AN ATTENDANT THREAT FOR TORNADOS...ONE OR TWO OF WHICH COULD BE
STRONG...AND LARGE HAIL. ADDITIONAL STORMS MAY FORM IN NE TX / NW LA
/ SW AR AHEAD OF THE SUPERCELLS.  THESE MAY THEMSELVES EVOLVE INTO
SUPERCELLS WITH A RISK FOR TORNADOS E / NE ACROSS NRN LA / SRN AR.
FINALLY...SOME INTENSIFICATION OF THE LINE OF STORMS IN N CENTRAL AR
MAY OCCUR THIS EVENING...WITH EMBEDDED SUSTAINED STORMS / SUPERCELLS
POSING A RISK FOR DAMAGING WIND...HAIL...AND POSSIBLY TORNADOES.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES EAST SOUTHEAST OF
LONGVIEW TEXAS TO 25 MILES NORTH NORTHEAST OF WALNUT RIDGE
ARKANSAS.  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 154...WW 155...WW 156...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 24035.


...CORFIDI

Tornado Watches in Arkansas, 2016Tornado Watches in Texas, 2016Tornado Watches in Louisiana, 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.