Alert archive / Nevada / Frost Advisories in 2015

Frost Advisory 1, NWS Elko, NV

September 6, 20155 counties in Nevada

NWS Elko, NV issued this frost advisory at Sep 6, 2015, 12:10 PM PDT for 5 counties in Nevada. It took effect at Sep 7, 2015, 1:00 AM PDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Sep 6, 2015, 12:10 PM PDT (19:10 UTC)
In effect from: Sep 7, 2015, 1:00 AM PDT
Expired: Sep 7, 2015, 8:00 AM PDT
In force: 7 hr
Issued by: NWS Elko, NV

Counties Elko County, NV, Eureka County, NV, Humboldt County, NV, Lander County, NV, White Pine County, NV

The radar

The Elko radar (KLRX), 56 km from the middle of the area, began a volume at 19:15 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

Elko, NV (KLKN), launched 12:00Z, 7.2 hours before the alert went out and 188 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2204 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this frost advisory 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 frost advisory went out at Sep 6, 10:55 AM PDT, 1 hour 15 minutes earlier.

Area forecast discussion, Sep 6, 10:55 AM PDT, 1 hour 15 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ELKO NV
1055 AM PDT SUN SEP 6 2015

.SYNOPSIS...MOSTLY CLOUDY AND WARMER TODAY. EXPECT ONE MORE COOL
MORNING ON MONDAY AS LOWS IN MANY VALLEY LOCATIONS FALL INTO THE
LOW TO MID 30S ACROSS NORTHERN NEVADA...WITH A FEW UPPER 20S.
OTHERWISE WARMING TEMPERATURES WITH RELATIVELY LIGHT WINDS AND DRY
CONDITIONS THROUGH NEXT WEEK.

&&

.UPDATE...INCREASED CLOUD COVER ACROSS NORTHERN AND CENTRAL NEVADA
FOR TODAY AS CLOUDS ARE COMING IN THICKER THAN EXPECTED.

&&

.PREV DISCUSSION... /ISSUED AT 720 AM /

SYNOPSIS...PARTLY CLOUDY AND WARMER TODAY. EXPECT ONE MORE COOL
MORNING ON MONDAY AS LOWS IN MANY VALLEY LOCATIONS FALL INTO THE
LOW TO MID 30S ACROSS NORTHERN NEVADA. OTHERWISE WARMING
TEMPERATURES WITH RELATIVELY LIGHT WINDS AND DRY CONDITIONS
THROUGH NEXT WEEK.

UPDATE...WITH THE RISING SUN TEMPERATURES ARE REBOUNDING BACK
ABOVE FREEZING. AS SUCH ALLOWED THE FREEZE WARNING TO EXPIRE ON
TIME. NO CHANGES TO THE FORECAST PACKAGE AT THIS TIME.

PREV DISCUSSION... /ISSUED AT 241 AM /

SYNOPSIS...FREEZING TEMPERATURES ARE EXPECTED ACROSS THE VALLEYS
OF NORTHEAST NEVADA THIS MORNING. VERY QUIET WEATHER EXPECTED
TODAY THROUGH NEXT WEEK WITH NO CHANCE OF RAIN AND A STRONG
WARMING TREND.

SHORT TERM...TODAY THROUGH MONDAY. TEMPS ARE DROPPING THIS
MORNING...BUT SOME LOCATIONS HAVE BE STUBBORN. EXPECT THE MAJORITY
OF VALLEY LOCATIONS TO DROP BELOW FREEZING...WITH SOME PLACES INTO
THE 20S. THE USUAL COLD SPOTS COULD SEEN TEENS. EXPECT A WARMING
TREND THROUGH MONDAY...WITH ANOTHER CHILLY MONDAY MORNING. NO
PRECIP IS EXPECTED.

LONG TERM...MONDAY NIGHT THROUGH NEXT SUNDAY. FLAT RIDGE SLOWLY
BUILDS IN OVER NEVADA NEXT WEEK AS TROUGH ENERGY EXITS NORTHEAST.
THE RESULT OF THIS WILL BE RISING TEMPERATURES...LIGHTER WINDS AND
DRY CONDITIONS.

AVIATION...VFR CONDITIONS AT ALL TERMINALS OVER THE NEXT 24 PLUS
HOURS.

FIRE WEATHER...DRY AND COOL TODAY. EXPECT A WARMING TREND
THROUGH NEXT WEEK. NO PRECIPITATION IS EXPECTED.

&&

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

96/96

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 6, 12:10 PM PDT	Freeze Warning	LKN	Elko	20 hr

Nearby

Frost Advisories in Nevada, 2015 Every frost advisory 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.