National Weather Service Text Product Display

Area Forecast Discussion
Issued by NWS Nashville, TN

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FXUS64 KOHX 192327
AFDOHX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
627 PM CDT SUN MAY 19 2013

.UPDATE...FOR AVIATION.

&&

.AVIATION...
00Z TAFS...SCT TSRA HAVE DECREASED SIGNIFICANTLY OVER THE PAST
COUPLE OF HOURS...AND THIS TREND WILL CONTINUE INTO THE EVENING
WITH VFR CONDITIONS AT ALL SITES THROUGH THE NEXT FEW HOURS. HUMID
CONDITIONS WITH A LIGHT S WIND WILL PROMOTE DEVELOPMENT OF FOG
OVERNIGHT...MVFR AT BNA AND CKV...BUT PROBABLY DOWN TO LIFR AT CSV
WHERE HEAVY RAIN HAS FALLEN. ALL SITES WILL IMPROVE TO VFR BY 15Z
MONDAY. A STRONG RIDGE ALOFT MONDAY WILL MEAN FEW IF ANY
TSRA...JUST WARM WITH SCT CUMULUS CLOUDS AND S WINDS AROUND 10KT.

13
&&

.PREV DISCUSSION... /ISSUED 455 PM CDT SUN MAY 19 2013/

UPDATE...
UPDATED SUITE OF FORECAST PRODUCTS TO REFLECT CURRENT SHWRS/TSTMS WITH
HEAVY RAINFALL POTENTIAL JUST E OF I-24 THRU LATE AFTERNOON HRS.

PREV DISCUSSION.../ISSUED 155 PM CDT SUN MAY 19 2013/

DISCUSSION...CONVECTION EAST OF I-65 REALLY STARTING TO BACK-
BUILD THE LAST FEW VOLUME SCANS, AND MAY BEGIN TO AFFECT THE
NASHVILLE METRO AREA IF THE CURRENT TREND CONTINUES MUCH LONGER.
THE 18Z LAPS SOUNDING FOR BNA SHOWS CONTINUED DESTABILIZATION,
WITH A LIFTED INDEX OF -11.6 AND CAPE OF 4012 J/KG. HOWEVER, THE
WARMEST TEMPERATURES ARE BEING OBSERVED IN AREAS FARTHER WEST
WHERE PARTIAL CLEARING HAS ALLOWED FOR DIRECT SUN. BUT DRIER AIR
PENETRATING FROM THE WEST HAS ALSO GREATLY REDUCED THE CHANCE FOR
CONVECTION IN THESE AREAS. LOOK FOR THE DRIER AIR TO CONTINUE
WORKING ITS WAY EASTWARD SO THAT ALL OF MIDDLE TENNESSEE SHOULD BE
RAIN-FREE LATER TONIGHT. TEMPERATURES TOMORROW AND TUESDAY WILL
APPROACH 90 DEGREES IN SOME AREAS, JUST IN TIME FOR THE NEXT
ACTIVE WEATHER SYSTEM TO BRING MORE PRECIPITATION AND SLIGHTLY
COOLER TEMPERATURE. BOTH THE GFS AND ECMWF ARE IN GOOD AGREEMENT
BRINGING A COLD FRONT THROUGH MIDDLE TENNESSEE ON WEDNESDAY, WITH
A SECOND E-W ORIENTED FRONT DROPPING INTO MIDDLE TENNESSEE
THURSDAY NIGHT OR FRIDAY MORNING. SPC IS KEEPING ITS SEVERE
WEATHER RISK AREAS WEST OF MIDDLE TENNESSEE THROUGH DAY 3, WITH
NOTHING SHOWING UP IN THEIR EXTENDED OUTLOOK, EITHER.

&&

.OHX WATCHES/WARNINGS/ADVISORIES...NONE.

&&

$$

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