Alert archive / Nevada / Special Weather Statements in 2012

Special Weather Statement, NWS Elko, NV

July 21, 2012

NWS Elko, NV issued this special weather statement at Jul 21, 2012, 6:24 PM PDT. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 21, 2012, 6:24 PM PDT (01:24 UTC)
Expired: Jul 21, 2012, 7:00 PM PDT
In force: 36 min
Issued by: NWS Elko, NV

The radar

The Elko radar (KLRX), 130 km from the middle of the area, began a volume at 01:24 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.

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Elko, NV wrote its last area forecast discussion before this special weather statement went out at Jul 21, 2:37 PM PDT, 3 hours 47 minutes earlier.

Area forecast discussion, Jul 21, 2:37 PM PDT, 3 hours 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ELKO NV
237 PM PDT SAT JUL 21 2012

.SYNOPSIS...ISOLATED THUNDERSTORMS EXPECTED THIS AFTERNOON OVER
EASTERN NEVADA. MORE AFTERNOON CONVECTION IS FORECAST FOR SUNDAY
WITH THE MONSOON RETURNING THIS WEEK.

&&

.SHORT TERM...THE REMAINDER OF TODAY THROUGH MONDAY...THE
SYNOPTIC PATTERN FEATURES A MASSIVE DOME OF HIGH PRESSURE OVER
THE CENTRAL PLAINS...A DEEP LOW OFF THE COAST OF BRITISH COLUMBIA
AND A VORT LOBE ENTERING CENTRAL CALIFORNIA. THE NAM12 CONTINUES
TO PROJECT WIDESPREAD AREAS OF NEGATIVE LIFTED INDICES AND CAPES
ABOVE 400 J/KG THIS FORECAST PERIOD. THE PWS ARE A SKOSH LOW OVER
THE CENTRAL ZONES...RANGING FROM .45 TO .55 OF AN INCH.
HOWEVER...ALONG THE UTAH/NEVADA BORDER...THE NAM HAS THE PWS
RANGING BETWEEN .75 TO .90 OF AN INCH THIS EVENING. PROGGED SOUNDINGS
DEPICT CLASSIC INVERTED V SOUNDING FOR ELY WITH BASES NEAR 550
MB...A DEEP LAYER OF MOISTURE...AND CONVECTIVE TEMPS BETWEEN 85F.
ISOLATED TO SCATTERED THUNDERSTORMS POSSIBLE THE TOMORROW AND
MONDAY AFTERNOONS...ALTHOUGH SIGNIFICANT QPF IS NOT ANTICIPATED.

.LONG TERM...MONDAY NIGHT THROUGH NEXT SATURDAY. MODELS ARE IN GOOD
AGREEMENT. THERE ARE SOME FEATURE POSITIONING ISSUES CONTINUING TO
ARISE IN THE LATTER PART OF THE MODEL RUNS. A SUBSTANTIAL RIDGE OVER
THE GREAT PLAINS WILL BLOCK ANY STRONG SYNOPTIC PACIFIC STORM
SYSTEMS FROM AFFECTING THE WEST. AN UPPER LOW PRESSURE SYSTEM WILL
EXIT INTO CANADA VIA ID/MT MONDAY NIGHT...MOVE ALONG THE U.S./CANADA
BORDER...AND PLUNGE INTO THE NORTHEAST U.S. BY FRIDAY. THIS IS VERY
SIMILAR TO THE MODEL RUN 24 HOURS AGO AND THE MOVEMENT OF THIS UPPER
LEVEL SYSTEM WILL ALLOW THE CURRENT ESTABLISHED RIDGE TO RE-INVENT
ITSELF NEAR THE 4-CORNERS AREA AS ANOTHER LOW FORMS OFF THE PACIFIC
NORTHWEST. THATS THE GFS VERSION. THE ECMWF MODEL SOLUTION DIFFERS
SLIGHTLY BUT COULD MEAN THE DIFFERENCE BETWEEN CONVECTION OR NO AS
THE WEEK WEARS ON. IT APPEARS THAT AT LEAST BRIEFLY THE ECMWF IS
POSITIONING THE RENEWED HIGH PRESSURE FEATURE OVER UT WHICH WOULD BE
LESS THAN IDEAL TO PUMP UNSTABLE AIR INTO THE GREAT BASIN. MADE SOME
MINOR CHANGES TO DRY/WET THUNDERSTORM COVERAGE EACH PERIOD. HIGH
TEMPERATURES WILL GENERALLY BE IN THE MID 90S AND LOWS WILL BE IN
THE 50S.

&&

.AVIATION...VFR CONDITIONS ARE EXPECTED AT KWMC KEKO KELY AND KTPH
THROUGH SUNDAY AFTERNOON. THUNDERSTORMS ARE EXPECTED ACROSS EASTERN
NEVADA THROUGH EARLY SATURDAY EVENING...AND AGAIN SUNDAY AFTERNOON
AND EVENING. KELY WILL MOST LIKELY BE AFFECTED THROUGH THIS EVENING
WITH ALL TAF SITES AND EVENING WITH THE POTENTIAL TO AFFECT KEKO
KELY AND KTPH ON SUNDAY. WINDS EMANATING FROM THUNDERSTORMS WILL BE
GUSTY TO AROUND 40 KTS.

&&

.FIRE WEATHER...ISOLATED THUNDERSTORMS HAVE ALREADY DEVELOPED TODAY
OVER 470 AND 455 AND MORE THUNDERSTORMS ARE EXPECTED THIS
EVENING. NEW FIRE STARTS POSSIBLE. RH RECOVERY OVER THE WESTERN
FIRE WEATHER ZONES WILL BE FAIR TO POOR...DECENT RH RECOVERY
PROJECTED ALONG THE UTAH/NEVADA BORDER. ANOTHER ROUND OF AFTERNOON
THUNDERSTORMS EXPECTED SUNDAY AFTERNOON. POSSIBLE RETURN OF
MONSOON MOISTURE EARLY NEXT WEEK...WITH THE MODELS PROJECTING PWS
NEAR ONE INCH OVER PORTIONS OF CENTRAL AND NORTHERN NEVADA.

&&

.LKN WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

97/92/92/97

In the hours before

Special weather statement, Jul 21, 5:05 PM PDT, 1 hour 19 minutes before

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Special weather statement, Jul 21, 5:19 PM PDT, 1 hour 5 minutes before

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Special weather statement, Jul 21, 6:24 PM PDT, 0 minutes before

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The office that day

Everything else NWS Elko, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 21, 5:05 PM PDT	Special Weather Statement	LKN		40 min
Jul 21, 5:19 PM PDT	Special Weather Statement	LKN		41 min
Jul 21, 6:25 PM PDT	Special Weather Statement	LKN		65 min
Jul 21, 6:58 PM PDT	Special Weather Statement	LKN		47 min
Jul 22, 2:09 AM PDT	Red Flag Warning	LKN		19 hr
Jul 22, 12:49 PM PDT	Special Weather Statement	LKN		41 min
Jul 22, 1:24 PM PDT	Special Weather Statement	LKN	Lander	51 min
Jul 22, 2:47 PM PDT	Special Weather Statement	LKN	Elko	43 min
Jul 22, 4:59 PM PDT	Special Weather Statement	LKN		46 min

Nearby

Special Weather Statements in Nevada, 2012 Every special weather statement in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.