Alert archive / Nevada / Special Weather Statements in 2015

Special Weather Statement, NWS Reno, NV

July 8, 2015Lander County, Nevada

NWS Reno, NV issued this special weather statement at Jul 8, 2015, 1:18 PM PDT for Lander County, Nevada. It was in force for 42 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 8, 2015, 1:18 PM PDT (20:18 UTC)
Expired: Jul 8, 2015, 2:00 PM PDT
In force: 42 min
Issued by: NWS Reno, NV

County Lander County, NV

The radar

The Elko radar (KLRX), 129 km from the middle of the area, began a volume at 20:17 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 nearest sounding before it

Reno, NV (KREV), launched 12:00Z, 8.3 hours before the alert went out and 59 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 6 J/kg
Mixed-layer CIN: -244 J/kg
Mixed-layer LCL: 1248 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Reno, NV wrote its last area forecast discussion before this special weather statement went out at Jul 8, 2:57 AM PDT, 10 hours 21 minutes earlier.

Area forecast discussion, Jul 8, 2:57 AM PDT, 10 hours 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
257 AM PDT WED JUL 8 2015

.SYNOPSIS...

THUNDERSTORMS CAPABLE OF PRODUCING FLASH FLOODING ARE EXPECTED
AGAIN TODAY AS LOW PRESSURE REMAINS NEAR THE NORTHERN CALIFORNIA
COAST. AS THIS LOW MOVES SLOWLY INLAND THURSDAY AND FRIDAY,
THE THREAT FOR ADDITIONAL FLOODING WILL DECREASE AS COOLER
TEMPERATURES WILL LIMIT THUNDERSTORM INTENSITY. FOR THIS WEEKEND,
THE LOW FINALLY EXITS THE REGION, RESULTING IN FEWER THUNDERSTORMS.

&&

.SHORT TERM...

ANOTHER FLASH FLOOD WATCH WAS ISSUED FOR TODAY. THE CONVECTIVE
ACTIVITY MAY EVOLVE DIFFERENTLY COMPARED TO PREVIOUS DAYS WITH
GUIDANCE INDICATING TWO ROUNDS OF THUNDERSTORMS. THE FIRST ROUND
OF THUNDERSTORMS IS PROJECTED TO BEGIN NEAR THE SIERRA BY LATE
MORNING THEN SPREAD INTO FAR WESTERN NV AND NORTHEAST CA DURING
THE AFTERNOON. DEPENDING ON HOW MUCH CLOUD COVER SPREADS OVER THE
REGION AS THESE STORMS DEVELOP, THERE MAY BE FEWER STRONG STORMS
COMPARED TO THE PAST FEW DAYS, BUT WITH OVERALL INCREASE IN
SATURATION OF THE GROUND IT MAY NOT TAKE AS MUCH ADDITIONAL
RAINFALL TO PRODUCE SOME FLOODING CONCERNS.

LATER IN THE AFTERNOON, THERE MAY BE A PERIOD OF REDUCED
CONVECTION THEN BY EARLY EVENING IT COULD GET MORE INTERESTING
ESPECIALLY FOR AREAS FROM I-80 NORTHWARD. FOR SEVERAL MODEL RUNS
OF BOTH THE GFS AND NAM, THERE HAVE BEEN INDICATIONS OF A LARGER
AND MORE INTENSE CLUSTER OF THUNDERSTORMS DEVELOPING DURING THE
EVENING HOURS. SHORTWAVE ENERGY ROTATING AROUND THE UPPER LOW AND
INCREASED LOW LEVEL CONVERGENCE, ALONG WITH MULTIPLE OUTFLOW
BOUNDARY INTERACTIONS COULD SET THE STAGE FOR STRONG STORMS AFTER
PEAK DAYTIME HEATING HAS PASSED. THE 00Z GUIDANCE FAVORED THIS
ENHANCED STORM CLUSTER STARTING NEAR PYRAMID LAKE-HONEY LAKE AND
EXPANDING TO THE NORTH, BUT THE 06Z GUIDANCE FOCUSED THIS ENHANCED
AREA A BIT FARTHER SOUTH AND TARGETING MORE OF THE RENO-SPARKS
METRO AREA. NEEDLESS TO SAY, IF THE 06Z SCENARIO PANS OUT THE
STORM AND FLOOD IMPACTS WILL BE FAR GREATER.

BY THURSDAY, THE LOW MOVES FARTHER INLAND AND IS LIKELY TO SPREAD
MORE CLOUD COVER ACROSS THE REGION, LIMITING INSTABILITY AND
INCREASING THE POSSIBILITY FOR A BROADER AREA OF STEADY LIGHT TO
MODERATE RAIN, WITH SOME ISOLATED EMBEDDED THUNDERSTORMS. FOR THE
VERY HIGH ELEVATIONS ABOVE 11,000 FEET IN MONO COUNTY, TEMPERATURES
MAY BECOME COOL ENOUGH FOR SOME SNOW, AFFECTING ANY BACKCOUNTRY
ACTIVITIES IN THESE REMOTE AREAS.

FOR FRIDAY, THE LOW FINALLY BEGINS TO WEAKEN ALTHOUGH ENOUGH
RESIDUAL MOISTURE WILL REMAIN IN PLACE. INSTABILITY MAY BE
LIMITED BY CLOUD COVER AND CONTINUED BELOW NORMAL TEMPS, BUT A FEW
THUNDERSTORMS REMAIN POSSIBLE MAINLY SOUTH OF HIGHWAY 50 AND IN
AREAS NORTH OF SUSANVILLE-GERLACH. MJD

.LONG TERM...SATURDAY THROUGH TUESDAY...

ONLY MINOR CHANGES WERE MADE TO THE EXTENDED FORECAST THIS CYCLE.
MEDIUM RANGE MODELS REMAIN IN GENERAL AGREEMENT THAT SOUTHWEST FLOW
WILL DEVELOP ALOFT THROUGH THE EXTENDED PERIOD...BUT THERE IS SOME
DIFFERENCE IN HOW FAST THE STRONGER DRYING TAKES PLACE. THE ECMWF
AND GEM WANT TO HANG ON TO MOISTURE A LITTLE LONGER THAN THE GFS AND
MOST OF THE GEFS ENSEMBLE MEMBERS.

WILL LEAVE SLIGHT CHANCE POPS THAT WERE INHERITED FOR SATURDAY AND
MADE SLIGHT ADJUSTMENTS TO THE SLIGHT CHANCE POPS OVER THE FAR NRN
CWA SUNDAY. IF THE ECMWF IS CORRECT THESE MAY NEED TO BE EXPANDED
SLIGHTLY OVER THE FAR SRN CWA AS WELL.

SOUTHWEST FLOW BECOMES WELL ENTRENCHED BY MONDAY AND TUESDAY WITH
DRIER AIR WORKING INTO THE REGION. WILL KEEP DAYTIME HIGHS BELOW
AVERAGE THROUGH MOST OF THE FORECAST...BUT WE SHOULD SEE HIGHS RISE
FROM THE LOWER TO MID 80S IN THE NV VALLEYS AND 70S IN THE SIERRA
VALLEYS ON SATURDAY, TO THE LOWER TO MID 90S IN THE NV VALLEYS
AND UPPER 70S TO LOWER 80S IN THE SIERRA BY TUESDAY. 20

&&

.AVIATION...

OVERALL PATTERN REMAINS CONDUCIVE TO THUNDERSTORM DEVELOPMENT AGAIN
TODAY OVER MUCH OF THE FORECAST AREA. THE BEST COVERAGE WILL LIKELY
BE WEST OF HIGHWAY 95 WHERE HEAVY RAIN IS ALSO POSSIBLE. HAIL AND
GUSTY OUTFLOW WINDS TO NEAR 60 MPH ARE POSSIBLE TODAY AND TURBULENCE
IS LIKELY. CHANCE FOR TSTMS AT THE TERMINALS WEST OF HIGHWAY 95 IS
GENERALLY IN THE 30-40% RANGE. EAST OF HIGHWAY 95 THIS FALLS TO
AROUND 20-30% CHANCE OF A TERMINAL RECEIVING THUNDER. WHILE VFR
WILL BE THE PREDOMINANT CATEGORY...THUNDERSTORMS COULD PRODUCE
BRIEF PERIODS OF MVFR CIGS AND IFR VSBYS IN VERY HEAVY RAIN.

SHOWERS AND THUNDERSTORMS ARE POSSIBLE THROUGH FRIDAY FOR MOST OF
THE AREA...BUT THE THUNDERSTORM COVERAGE WILL DECREASE EACH DAY. BY
SATURDAY ONLY ISOLATED STORMS ARE EXPECTED WITH A LIMITED CHANCE OF
THUNDER AFFECTING ANY TERMINALS. 20

&&

.REV WATCHES/WARNINGS/ADVISORIES...
NV...FLASH FLOOD WATCH FROM 10 AM PDT THIS MORNING THROUGH THIS
     EVENING NVZ001>005.

CA...FLASH FLOOD WATCH FROM 10 AM PDT THIS MORNING THROUGH THIS
     EVENING CAZ070>073.

&&

FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/RENO (ALL LOWER CASE)

In the hours before

Local storm report, Jul 8, 12:28 PM PDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
1228 PM PDT WED JUL 08 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1227 PM     HAIL             3 SSW SOUTH LAKE TAHOE  38.85N 120.02W
07/08/2015  M0.25 INCH       EL DORADO          CA   TRAINED SPOTTER

            PEA SIZE HAIL REPORTED WITH HEAVY RAIN.

&&

ELW

Local storm report, Jul 8, 12:38 PM PDT, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
1238 PM PDT WED JUL 08 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1237 PM     HAIL             NW SOUTH LAKE TAHOE     38.94N 119.99W
07/08/2015  M0.25 INCH       EL DORADO          CA   TRAINED SPOTTER

            PEA SIZE HAIL AND MODERATE TO HEAVY RAIN AT REAGAN BEACH.

&&

ELW

Local storm report, Jul 8, 12:51 PM PDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE RENO NV
1251 PM PDT WED JUL 08 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1227 PM     HAIL             3 SSW SOUTH LAKE TAHOE  38.85N 120.02W
07/08/2015  M0.25 INCH       EL DORADO          CA   TRAINED SPOTTER

            PEA SIZE HAIL REPORTED WITH HEAVY RAIN.

1237 PM     HAIL             NW SOUTH LAKE TAHOE     38.94N 119.99W
07/08/2015  M0.25 INCH       EL DORADO          CA   TRAINED SPOTTER

            PEA SIZE HAIL AND MODERATE TO HEAVY RAIN AT REAGAN BEACH.

1246 PM     HAIL             1 E SOUTH LAKE TAHOE    38.94N 119.95W
07/08/2015  M1.00 INCH       EL DORADO          CA   TRAINED SPOTTER

            QUARTER SIZE HAIL REPORTED AT BLACKWOOD AND PIONEER TRAIL
            IN SOUTH LAKE TAHOE.

1250 PM     HAIL             1 E SOUTH LAKE TAHOE    38.94N 119.96W
07/08/2015  M1.00 INCH       EL DORADO          CA   TRAINED SPOTTER

            QUARTER SIZE HAIL REPORTED IN SOUTH LAKE TAHOE.

&&

ELW

Special weather statement, Jul 8, 1:09 PM PDT, 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
109 PM PDT WED JUL 8 2015

CAZ071-072-082100-
GREATER LAKE TAHOE AREA CA-LASSEN-EASTERN PLUMAS-
EASTERN SIERRA COUNTIES CA-
109 PM PDT WED JUL 8 2015

...CLUSTERS OF STRONG STORMS IMPACTING YUBA PASS TO TRUCKEE
THROUGH 2 PM...

* AT 107 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR
  SATTLEY TO PROSSER CREEK RESERVOIR...AND MOVING NORTHWEST AT 15
  MPH.

* LARGE AMOUNTS OF DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL
  BE POSSIBLE WITH THESE STORMS. ROADS MAY BECOME TEMPORARILY
  COVERED WITH HAIL AND BECOME SLICK LIKE WINTER CONDITIONS. THIS IS
  LIKELY OVER YUBA PASS.

* THESE STORMS WILL ALSO PRODUCE VERY HEAVY RAINS THAT CAN RESULT IN
  PONDING WATER ON THE ROADWAY AND LOCALIZED FLASH FLOODING AND ROCK
  SLIDES WITH LITTLE WARNING. DO NOT DRIVE INTO FLOODED AREAS.

* LOCATIONS IMPACTED INCLUDE...
  SIERRAVILLE...PROSSER CREEK RESERVOIR...PLUMAS EUREKA STATE PARK...
  GRAEAGLE...INDEPENDENCE LAKE...CALPINE...SATTLEY...WHITEHAWK...
  GLENSHIRE-DEVONSHIRE CDP...CLIO...VALLEY RANCH...TRUCKEE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS RESULTING IN
SIGNIFICANT PONDING OF WATER ON THE ROAD AND REDUCED VISIBILITY.

&&

LAT...LON 3979 12071 3968 12041 3934 12009 3932 12031
      3939 12036 3945 12038 3949 12044 3953 12043
      3961 12047 3971 12063 3968 12068 3971 12072
TIME...MOT...LOC 2007Z 114DEG 13KT 3963 12049 3936 12017

CS

Local storm report, Jul 8, 1:10 PM PDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
110 PM PDT WED JUL 08 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0109 PM     HAIL             6 WSW BOCA RESERVOIR    39.36N 120.18W
07/08/2015  M0.25 INCH       NEVADA             CA   TRAINED SPOTTER

            PEA SIZE HAIL REPORTED IN PROSSER HEIGHTS.

&&

ELW

Special weather statement, Jul 8, 1:18 PM PDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
118 PM PDT WED JUL 8 2015

NVZ004-082100-
WESTERN NEVADA BASIN AND RANGE INCLUDING PYRAMID LAKE NV-
118 PM PDT WED JUL 8 2015

...STRONG THUNDERSTORMS CONTINUE IN EASTERN CHURCHILL COUNTY...

AT 116 PM PDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 14
MILES NORTH OF NEW PASS SUMMIT. THIS STORM WAS MOVING NORTHEAST AT
15 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THIS STORM. ALSO...VERY HEAVY RAIN AND LOCALIZED FLASH FLOODING IS
LIKELY OCCURRING.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTHEASTERN
CHURCHILL COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM RESULTING IN
SIGNIFICANT PONDING OF WATER ON THE ROAD AND REDUCED VISIBILITY.
SOME DIRT ROADWAYS WILL BE WASHED OUT. IN AREAS OF STEEP
TERRAIN...MINOR ROCK SLIDES ARE POSSIBLE.

&&

LAT...LON 3960 11748 3953 11750 3952 11759 3959 11785
      3996 11764 3999 11754 3994 11748 3988 11746
      3977 11750 3968 11746 3962 11746
TIME...MOT...LOC 2016Z 197DEG 4KT 3974 11748

MB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 5:34 PM PDT	Special Weather Statement	REV		41 min
Jul 7, 10:04 PM PDT	Flash Flood Watch	REV	Churchill, Douglas, Lyon, Mineral, Pershing, Storey and 1 more	23 hr
Jul 8, 12:12 PM PDT	Special Weather Statement	REV	Churchill	48 min
Jul 8, 12:41 PM PDT	Severe Thunderstorm Warning	REV	Douglas	49 min
Jul 8, 1:25 PM PDT	Special Weather Statement	REV	Douglas	35 min
Jul 8, 1:37 PM PDT	Flash Flood Warning	REV	Douglas, Washoe	3 hr
Jul 8, 1:37 PM PDT	Special Weather Statement	REV		38 min
Jul 8, 2:05 PM PDT	Special Weather Statement	REV	Storey	40 min
Jul 8, 2:26 PM PDT	Special Weather Statement	REV	Pershing	64 min
Jul 8, 2:30 PM PDT	Special Weather Statement	REV	Lyon	45 min
Jul 8, 2:32 PM PDT	Severe Thunderstorm Warning	REV	Storey, Washoe	43 min
Jul 8, 2:47 PM PDT	Flash Flood Warning	REV	Pershing	3 hr
Jul 8, 3:01 PM PDT	Special Weather Statement	REV	Lyon	44 min
Jul 8, 3:06 PM PDT	Severe Thunderstorm Warning	REV	Storey, Washoe	39 min
Jul 8, 3:19 PM PDT	Flash Flood Warning	REV	Washoe	3 hr
Jul 8, 3:19 PM PDT	Flash Flood Warning	REV	Lyon, Mineral	3 hr
Jul 8, 3:26 PM PDT	Special Weather Statement	REV	Mineral	34 min
Jul 8, 3:32 PM PDT	Special Weather Statement	REV	Lyon	43 min
Jul 8, 3:54 PM PDT	Special Weather Statement	REV		36 min
Jul 8, 4:10 PM PDT	Severe Thunderstorm Warning	REV	Churchill	35 min
Jul 7, 5:55 PM PDT	Areal Flood Advisory	REV	Alpine	3 hr
Jul 8, 11:30 AM PDT	Special Weather Statement	REV	Alpine	45 min
Jul 8, 12:22 PM PDT	Special Weather Statement	REV	Alpine, Mono	53 min
Jul 8, 12:38 PM PDT	Flash Flood Warning	REV	Alpine, Mono	3 hr
Jul 8, 1:02 PM PDT	Severe Thunderstorm Warning	REV	Plumas	28 min
Jul 8, 1:09 PM PDT	Special Weather Statement	REV	Sierra	51 min
Jul 8, 1:36 PM PDT	Special Weather Statement	REV	Sierra	24 min
Jul 8, 1:48 PM PDT	Flash Flood Warning	REV	Mono	3 hr
Jul 8, 1:51 PM PDT	Flash Flood Warning	REV	Nevada, Sierra	3 hr
Jul 8, 1:58 PM PDT	Severe Thunderstorm Warning	REV	Plumas	47 min
Jul 8, 2:04 PM PDT	Special Weather Statement	REV	Plumas	26 min
Jul 8, 3:10 PM PDT	Special Weather Statement	REV	Lassen	50 min
Jul 8, 4:01 PM PDT	Special Weather Statement	REV	Lassen	44 min
Jul 8, 4:24 PM PDT	Severe Thunderstorm Warning	REV	Lassen	36 min

Nearby

Special Weather Statements in Nevada, 2015 Every special weather statement in 2015

Sources

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.