Mesoscale Discussion 752

Issued

May 5, 2003, 2:31 AM EST (07:31 UTC)

Expired

May 5, 2003, 4:00 AM EST

In force

89 min

Issued by

the Storm Prediction Center

The Nashville radar (KOHX), 61 km from the middle of the area, began a volume at 07:32 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.

• Tornado Watch 245May 5, 3:15 AM EST
• Tornado Watch 246May 5, 3:50 AM EST
• Tornado Watch 247May 5, 4:55 AM EST

166 
ACUS11 KWNS 050731
SWOMCD
SPC MCD 050731 
NCZ000-KYZ000-TNZ000-INZ000-050900-

MESOSCALE DISCUSSION 0752
NWS STORM PREDICTION CENTER NORMAN OK
0231 AM CDT MON MAY 05 2003

AREAS AFFECTED...MIDDLE AND ERN TN / CENTRAL KY...

CONCERNING...TORNADO WATCH 242...

VALID 050731Z - 050900Z

WIDESPREAD CONVECTION -- INCLUDING A CLUSTER OF HP SUPERCELLS OVER
MIDDLE TN -- CONTINUES MOVING EWD ACROSS WW.  GREATEST THREAT WILL
REMAIN ACROSS SRN PORTIONS OF WW...ALTHOUGH NEW STORMS INCREASING
ACROSS WRN KY MAY EVENTUALLY POSE A TORNADO THREAT AS WELL.

WIDESPREAD RAIN / THUNDERSTORMS CONTINUE ACROSS NRN / ERN PORTIONS
OF WW...WITH MOST UNSTABLE AIRMASS ACROSS MIDDLE TN ATTM TO THE
SOUTHWEST OF MORE WIDESPREAD CONVECTION.

SLY LOW-LEVEL FLOW CONTINUES TO ADVECT MOIST / UNSTABLE AIR NWD INTO
MIDDLE TN STORMS...SUGGESTING SEVERE / TORNADO THREAT WILL CONTINUE
GIVEN VERY STRONG / VEERING DEEP-LAYER WIND FIELD.

FURTHER EAST...BOUNDARY LAYER REMAINS MORE STABLE...AND IS NOT
EXPECTED TO DESTABILIZE SIGNIFICANTLY OVER THE NEXT FEW HOURS. 
HOWEVER...SUFFICIENT ELEVATED INSTABILITY /500 TO 1000	J/KG
MOST-UNSTABLE CAPE/ TO SUPPORT A THREAT FOR PRIMARILY LARGE HAIL AND
PERHAPS LOCALLY DAMAGING WINDS.  NEW WW MAY BE REQUIRED WITHIN THE
HOUR EAST OF CURRENT WW.

..GOSS.. 05/05/2003

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

ATTN...WFO...GSP...MRX...JKL...ILN...LMK...OHX...PAH...MEG...

35508813 38418638 38378355 35158396

Mesoscale Discussions in Kentucky, 2003Mesoscale Discussions in Tennessee, 2003Mesoscale Discussions in Indiana, 2003Every mesoscale discussion in 2003

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.