Mesoscale Discussion 2297

Issued

Nov 7, 2011, 11:20 PM CST (05:20 UTC)

Expired

Nov 8, 2011, 12:45 AM CST

In force

85 min

Issued by

the Storm Prediction Center

The Norman radar (KTLX), 48 km from the middle of the area, began a volume at 05:19 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.

152 
ACUS11 KWNS 080521
SWOMCD
SPC MCD 080520
ARZ000-MOZ000-OKZ000-KSZ000-TXZ000-080645-

MESOSCALE DISCUSSION 2297
NWS STORM PREDICTION CENTER NORMAN OK
1120 PM CST MON NOV 07 2011

AREAS AFFECTED...NWRN TX THROUGH CNTRL AND NERN OK...SERN KS AND
SWRN MO

CONCERNING...TORNADO WATCH 871...873...

VALID 080520Z - 080645Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 871...873...CONTINUES.

THREAT FOR MAINLY ISOLATED DAMAGING WIND WILL PERSIST NEXT SEVERAL
HOURS...BUT COUPLE OF ISOLATED TORNADOES REMAIN POSSIBLE. GREATEST
WIND THREAT EXISTS FROM CNTRL THROUGH S-CNTRL OK. VERY HEAVY RAIN
ASSOCIATED WITH TRAINING STORMS WILL PERSIST FROM NWRN TX THROUGH
NERN OK INTO THE EARLY MORNING.

LATE THIS EVENING A SQUALL LINE EXTENDS FROM NERN OK NEAR TULSA SWWD
TO OKLAHOMA CITY THEN SWWD INTO NWRN TX. CNTRL OK PORTION OF THE
LINE HAS ACCELERATED AND HAS DEVELOPED A BOWING STRUCTURE AND
EMBEDDED SUPERCELL MOVING EWD AT ABOUT 45-50 KT. ANOTHER BOWING
SEGMENT IS MOVING THROUGH NERN OK AND MAY ALSO POSE A RISK FOR
DAMAGING WIND DURING THE NEXT HOUR. HOWEVER...THE NERN OK STORMS MAY
EVENTUALLY WEAKEN AS THEY MOVE INTO THE LESS UNSTABLE REGIME IN SWRN
MO. OTHER MORE DISCRETE STORMS ARE DEVELOPING ACROSS SRN OK NEAR AND
EAST OF ARDMORE LIFTING NWD. THESE STORMS CURRENTLY APPEAR
ELEVATED...BUT COULD POSE AN ISOLATED TORNADO RISK IF THEY CAN
BECOME ROOTED IN THE BOUNDARY LAYER. THUNDERSTORMS ARE ALSO
INCREASING OVER NWRN TX WITHIN ZONE OF DEEPER ASCENT ASSOCIATED WITH
UPPER JET EXIT REGION. STRONG VERTICAL SHEAR AND LARGE HODOGRAPHS
WILL CONTINUE TO PROMOTE EMBEDDED MESOCYCLONES AND BOWING
STRUCTURES. SWLY FLOW ALOFT PARALLEL TO THE INITIATING BOUNDARIES
WILL SUPPORT MANY CELLS TRAINING NEWD...RESULTING IN VERY HEAVY
RAIN.

..DIAL.. 11/08/2011

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...SGF...TSA...ICT...FWD...OUN...SJT...LUB...

LAT...LON   33890018 34069925 34419851 35059809 35579793 36729560
            37769468 36559456 35659490 34459653 33449824 33369991
            33890018

Mesoscale Discussions in Oklahoma, 2011Mesoscale Discussions in Texas, 2011Mesoscale Discussions in Kansas, 2011Every mesoscale discussion in 2011

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.