Drought in Oklahoma, April 1 to 30, 2013

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
1141 PM CDT SUN MAR 31 2013

.AVIATION...
FOR THE 06Z TAFS...VFR CONDITIONS EXPECTED THROUGH AT LEAST
18Z...THEN THERE IS CONSIDERABLY MORE UNCERTAINTY IN THE FORECAST.
THE COLD FRONT IS STILL IN NW KS AND NE CO. THUS...HAVE PUSHED BACK
THE TIMING OF THE FRONT IN THE TAFS SLIGHTLY. LOOKING AT UPSTREAM
OBS...EXPECT TO SEE BREEZE CONDITIONS WITH AND FOR A FEW HOURS BEHIND
THE FRONT. HAVE SEEN GUSTS AS HIGH AS 39KT. SINCE NO MODELS SUPPORT
THESE STRONG POST FRONTAL WINDS...HAVE KEPT WINDS WELL BELOW AWW
CRITERIA...BUT WILL CONTINUE TO WATCH CLOSELY. AFTER 18Z...COULD
BEGIN TO SEE LOW CLOUDS ADVECT INTO THE NORTHERN TAF SITES...BRINGING
MVFR CEILINGS TO KDHT AND KGUY.

AS FOR PRECIP...IT IS POSSIBLE AT ALL TAF SITES BETWEEN 18 AND
00Z...BUT ISNT LIKELY UNTIL AFTER 00Z. HAVE MENTIONED TS AT BOTH KDHT
AND KAMA...THOUGH EXPECT THAT IT WILL BE MORE SHRA...WITH ONLY
ISOLATED TSRA. FOR KGUY...EXPECT MAINLY JUST -RA.
HOWEVER...TEMPERATURES NEAR 06Z (AND LATER)...COULD BE VERY NEAR
FREEZING...ESPECIALLY AT KGUY SO WILL MONITOR THIS CLOSELY.

JOHNSON
&&

.PREV DISCUSSION... /ISSUED 635 PM CDT SUN MAR 31 2013/

AVIATION...
FOR THE 00Z TAFS...LITTLE CHANGE FROM THE 18Z TAFS. HIGH CONFIDENCE
THAT VFR CONDITIONS WILL CONTINUE THROUGH AT LEAST 18Z. THE COLD
FRONT STILL LOOKS ON TRACK TO ARRIVE AT KDHT AND KGUY DURING THE
OVERNIGHT HOURS...LIKELY BETWEEN 09 AND 12Z. A LITTLE LESS CONFIDENCE
ON WHEN IT WILL ARRIVE AT KAMA...AT THIS POINT EXPECT IT TO ARRIVE
BETWEEN 15 AND 21Z...THOUGH THE NAM SHOWS THE FRONT POSSIBLY ARRIVING
A BIT EARLIER THAN THAT. CHANCES FOR SHRA AND TSRA INCREASE AFTER
18Z. AT THIS POINT...ONLY KAMA HAS A SIGNIFICANT CHANCE FOR PRECIP
BEFORE 00Z...THOUGH IT IS ALSO POSSIBLE AT KDHT AND KGUY. WITH ANY
PRECIP....EXPECT MVFR AND POSSIBLY IFR CONDITIONS.

JOHNSON

PREV DISCUSSION... /ISSUED 344 PM CDT SUN MAR 31 2013/

DISCUSSION...
THERE'S GOOD NEWS AND THERE'S BAD NEWS. YOU WANT THE GOOD NEWS
FIRST, RIGHT? WELL, IT APPEARS MOST OF THE AREA WILL RECEIVE SOME
BENEFICIAL RAINS (POSSIBLY UP TO 1.5 INCHES) OVER THE NEXT 72 HOURS.
THE BAD NEWS IS THAT IT WILL BE TURNING COLDER ON TUESDAY AND
WEDNESDAY WITH OLD MAN WINTER POSSIBLY MAKING A RETURN TO THE
PANHANDLES.

THROUGH TONIGHT: IT SHOULD BE A QUIET NIGHT WITH HIGH CLOUDS SLOWLY
INCREASING LATE TONIGHT. SOUTHERLY WINDS WILL RETURN AND TEMPERATURES
TOMORROW MORNING SHOULD ONLY DROP INTO THE UPPER 30S TO UPPER 40S. WE
REMOVED ANY MENTION OF PRECIPITATION TONIGHT AS THERE JUST DOESN'T
APPEAR TO BE ENOUGH LIFT TO SUPPORT POPS.

MONDAY-MONDAY NIGHT: A COLD FRONT IS STILL ON TRACK TO ENTER THE
OKLAHOMA PANHANDLE JUST BEFORE SUNRISE AND SLOWLY PUSH SOUTHWARD
THROUGH THE DAY. GIVEN THE IMPRESSIVE PRESSURE RISES BEHIND THE
FRONT, WE COMPROMISED WITH THE SLOWER MODELS AND THE FASTER NAM AND
HAVE BROUGHT THE FRONT IN SLIGHTLY FASTER THAN THE LAST COUPLE OF
DAYS. THUNDERSTORMS STILL LOOK POSSIBLE TOMORROW AFTERNOON,
ESPECIALLY AHEAD OF THE FRONT. A FEW STRONG TO MARGINALLY SEVERE
STORMS WILL BE POSSIBLE ACROSS THE SOUTHERN TEXAS PANHANDLE BETWEEN 2
PM AND 6 PM, BUT THIS THREAT DOESN'T LOOK AS GOOD AS IT DID
YESTERDAY. THE MAIN HAZARDS WILL BE LARGE HAIL AND DAMAGING WINDS.
COOLER TEMPERATURES WILL FILTER INTO THE AREA MONDAY EVENING AND
MONDAY NIGHT. BETTER CHANCES FOR WIDESPREAD RAINFALL WILL BE MONDAY
NIGHT. THE HIGHEST CHANCES FOR RAIN WILL BE OVER THE NORTHEAST HALF
OF THE PANHANDLES. WE'RE NOT EXPECTING ANY FROZEN PRECIPITATION
SINCE TEMPERATURES WILL REMAIN ABOVE FREEZING AND THE DENDRITIC
GROWTH LAYER WON'T BE ADEQUATELY SATURATED.

TUESDAY-TUESDAY NIGHT: THE BEST CHANCES FOR PRECIPITATION WILL BE
DURING THIS TIME PERIOD. THROUGH LATE TUESDAY AFTERNOON, THE
PRECIPITATION TYPE IS EXPECTED TO REMAIN ALL LIQUID. BY TUESDAY
EVENING AND NIGHT, OUR CONFIDENCE GOES IN THE CRAPPER WITH RESPECT
TO PRECIPITATION TYPES AND AMOUNTS. LIKE WE'VE MENTIONED FOR THE LAST
FEW DAYS, THE BIGGEST UNCERTAINTY WITH PRECIPITATION TYPES IS RELATED
TO HOW MUCH MOISTURE WILL BE PRESENT IN THE DENDRITIC GROWTH LAYER.
MODELS CONTINUE TO STRUGGLE TO RESOLVE THIS, BUT MODEL CONSENSUS
SUGGESTS THE HIGHEST POTENTIAL FOR SNOW WILL BE AFTER 11 PM FOR
LOCATIONS NORTH AND WEST OF A TEXLINE TO ELKHART LINE. THERE'S A
POSSIBILITY THERE COULD BE MOSTLY ALL SNOW FARTHER SOUTH, INCLUDING
AMARILLO, BUT CONFIDENCE IS VERY LOW. FOR NOW, WE KEPT ACCUMULATIONS
UP TO 1 INCH FOR LOCATIONS NORTH OF A VEGA TO LIPSCOMB LINE.
COMPLICATING MATTERS EVEN FURTHER IS SNOW AMOUNTS. IF THE DENDRITIC
GROWTH LAYER IS SATURATED FARTHER SOUTH THAN WE CURRENTLY ANTICIPATE,
ADVISORY-LEVEL SNOWS WILL BE POSSIBLE FOR LOCATIONS ALONG AND NORTH
OF THE HIGHWAY 60 CORRIDOR.

WEDNESDAY-WEDNESDAY NIGHT: RAIN AND SNOW WILL CONTINUE WEDNESDAY
MORNING ACROSS A GOOD CHUNK OF THE AREA. MODELS STILL DIFFER WITH
THE LOCATION OF THE FAVORABLE DENDRITIC GROWTH LAYER, BUT THE GENERAL
CONSENSUS IS THAT IT WILL BE ACROSS THE NORTHWEST PANHANDLES. SNOW
LOOKS LIKE IT WILL BE MAINLY CONFINED TO LOCATIONS NORTH OF DALHART
TO GUYMON LINE. STORM TOTAL SNOWFALL ACCUMULATIONS OF 1-2 INCHES WILL
BE POSSIBLE FOR LOCATIONS NORTH OF A DALHART TO BEAVER LINE. ALL RAIN
IS EXPECTED WEDNESDAY AFTERNOON WITH PRECIPITATION CHANCES GRADUALLY
DECREASING FROM WEST TO EAST. WE KEPT A SMALL MENTION OF
PRECIPITATION ACROSS THE FAR EAST THROUGH MIDNIGHT, BUT MOST OF THE
PRECIPITATION SHOULD BE EAST OF THE AREA BY THEN.

THURSDAY-SUNDAY: THE UPPER FLOW PATTERN WILL TRANSITION FROM
NORTHWESTERLY AT THE BEGINNING OF THIS PERIOD TO SOUTHWESTERLY BY THE
END. AS A RESULT, EXPECT WARM AND DRY CONDITIONS TO PREVAIL. A MORE
ACTIVE WEATHER PATTERN IS EXPECTED TO DEVELOP AGAIN BY THE BEGINNING
OF THE FOLLOWING WEEK. IT'S TOO EARLY TO TELL WHETHER WE'LL SEE
THUNDERSTORMS OR WINDY, WARM, AND DRY CONDITIONS.

JACKSON

FIRE WEATHER...
NO ELEVATED OR CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THROUGH
THURSDAY. ELEVATED FIRE WEATHER CONDITIONS FROM A WIND AND RH
STANDPOINT WILL LIKELY RETURN ON FRIDAY, BUT DUE TO THE EXPECTED
RAINFALL OVER THE NEXT 3 DAYS, WE DON'T ANTICIPATE ISSUING ANY FIRE
WEATHER-RELATED PRODUCTS AS FUELS SHOULD BE MUCH MORE MOIST.

&&

.AMA WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
OK...NONE.

&&

16/09

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AMARILLO TX
304 PM CDT SUN MAR 31 2013

OKZ001>003-TXZ001>020-011100-
CIMARRON-TEXAS-BEAVER-DALLAM-SHERMAN-HANSFORD-OCHILTREE-LIPSCOMB-
HARTLEY-MOORE-HUTCHINSON-ROBERTS-HEMPHILL-OLDHAM-POTTER-CARSON-
GRAY-WHEELER-DEAF SMITH-RANDALL-ARMSTRONG-DONLEY-COLLINGSWORTH-
304 PM CDT SUN MAR 31 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA
PANHANDLES.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THUNDERSTORMS WILL BE POSSIBLE ACROSS MUCH OF THE PANHANDLES MONDAY
THROUGH TUESDAY. A FEW OF THE STORMS MAY BE STRONG TO MARGINALLY
SEVERE MONDAY AFTERNOON ACROSS THE SOUTHERN TEXAS PANHANDLE WITH
LARGE HAIL AND DAMAGING WINDS BEING THE PRIMARY HAZARDS.

A WINTRY MIX OF RAIN AND SNOW MAY OCCUR ACROSS THE NORTHWEST HALF OF
THE PANHANDLES TUESDAY NIGHT THROUGH WEDNESDAY MORNING.
HOWEVER...THERE STILL REMAINS A LOT OF UNCERTAINTY WITH RESPECT TO
PRECIPITATION TYPES AND AMOUNTS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER GROUPS AND EMERGENCY MANAGEMENT OFFICIALS ACROSS THE SOUTHERN
TEXAS PANHANDLE SHOULD REMAIN ALERT AND BE READY FOR POSSIBLE
LIMITED ACTIVATION MONDAY AFTERNOON.

JACKSON