Alert archive / Nevada / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 22, NWS Elko, NV

July 23, 2017Eureka County, Nevada

NWS Elko, NV issued this severe thunderstorm warning at Jul 23, 2017, 1:46 PM PDT for Eureka County, Nevada. It was in force for 44 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 23, 2017, 1:46 PM PDT (20:46 UTC)
Expired: Jul 23, 2017, 2:30 PM PDT
In force: 44 min
Issued by: NWS Elko, NV
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Eureka County, NV

The radar

The Elko radar (KLRX), 136 km from the middle of the area, began a volume at 20:48 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Reno, NV (KREV), launched 12:00Z, 8.8 hours before the alert went out and 190 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: 3168 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

665 
WUUS55 KLKN 232046
SVRLKN
NVC011-232130-
/O.NEW.KLKN.SV.W.0022.170723T2046Z-170723T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Elko NV
146 PM PDT SUN JUL 23 2017

The National Weather Service in Elko Nevada has issued a

* Severe Thunderstorm Warning for...
  Southeastern Eureka County in north central Nevada...

* Until 230 PM PDT

* At 146 PM PDT, a severe thunderstorm was located over Diamond
  Valley, moving southeast at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Diamond Valley, Eureka Airport and Garden Pass. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3962 11583 3948 11605 3976 11629 3992 11610
      3973 11583
TIME...MOT...LOC 2046Z 315DEG 22KT 3972 11607 

HAIL...1.00IN
WIND...60MPH
 
$$

DS

2 follow-up statements

809 
WWUS55 KLKN 232110
SVSLKN

Severe Weather Statement
National Weather Service Elko NV
210 PM PDT SUN JUL 23 2017

NVC011-232130-
/O.CON.KLKN.SV.W.0022.000000T0000Z-170723T2130Z/
Eureka NV-
210 PM PDT SUN JUL 23 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM PDT
FOR SOUTHEASTERN EUREKA COUNTY...

At 209 PM PDT, a severe thunderstorm was located near Eureka Airport,
moving southeast at 15 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Diamond Valley and Eureka Airport. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3962 11583 3948 11605 3976 11629 3986 11609
      3973 11583
TIME...MOT...LOC 2109Z 315DEG 22KT 3962 11594 

HAIL...1.00IN
WIND...60MPH
 
$$

DS

260 
WWUS55 KLKN 232129
SVSLKN

Severe Weather Statement
National Weather Service Elko NV
229 PM PDT SUN JUL 23 2017

NVC011-232138-
/O.EXP.KLKN.SV.W.0022.000000T0000Z-170723T2130Z/
Eureka NV-
229 PM PDT SUN JUL 23 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN EUREKA COUNTY
WILL EXPIRE AT 230 PM PDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire.  However gusty winds
and heavy rain are still possible with this thunderstorm.

LAT...LON 3962 11583 3948 11605 3976 11629 3986 11609
      3973 11583
TIME...MOT...LOC 2128Z 315DEG 22KT 3958 11589 

$$

DS

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 23, 3:27 AM PDT, 10 hours 19 minutes earlier.

Area forecast discussion, Jul 23, 3:27 AM PDT, 10 hours 19 minutes before

Area Forecast Discussion
National Weather Service Elko NV
327 AM PDT Sun Jul 23 2017

.SYNOPSIS...Monsoonal moisture surges north and west into the area
today and continues into the early part of next week. This will be
coupled with a trough moving onshore from the Pacific. This
combination will lead to an increase chance of thunderstorms
through the next several days. Drier air works its way back into
the region from the northwest by mid- week curtailing
thunderstorm chances.

&&

.SHORT TERM...Today through Monday. Monsoonal moisture continues
to stream into the area and will push further north and west
today. At the same the Pacific trough will begin moving in from
the west and the combination of moisture and instability will lead
to a greater coverage of thunderstorms. Expecting mostly wet
thunderstorms with some dry thunderstorms on the leading edge of
the moisture push north of I80 before transitioning to wet this
evening. On Monday, showers and thunderstorm coverage and
intensity increases as the upper- level low encroaches on the
region. Ensemble mean PW values expected to be in the 90th
percentile or higher over an inch and CAPE values of 800-1500 J/kg
will provide ample fuel for widespread showers and storms. With
the upper-level jet spreading over the state, some of this
activity could be better organized and strong.

Another issue will be possible flash flooding due to moderate to
heavy rain and overall slow storm motions, particularly over
recent burn scars. Expect warms temps to continue with highs in
the upper 80s to mid 90s on Sunday, dropping a few degrees on
Monday with the increased moisture and cloud cover.

.LONG TERM...Monday night through Saturday. Active monsoon regime
continues Through Wednesday. With precipitable water values near 1
inch localized flooding is possible under the more intense storm
cells. In addition upper low over northern CA Tuesday and
Wednesday will also provide dynamical enhancement across northern
NV with some strong to severe storms possible. Drier air moving
in from the west will limit thunderstorm activity to eastern NV
Thursday through Saturday, but with precipitable water values
remaining near 1 inch across eastern NV heavy rains will be
possible with any storms.

&&

.AVIATION...Scattered afternoon and evening thunderstorms across
east central NV today with possible impacts to the KELY terminal.
Thunderstorm coverage will spread north and west aft 00z with
possible impacts to the KEKO/KWMC terminals.

&&

.FIRE WEATHER...Storm activity expands north and west today.
North of I80 expect a chance of isolated dry storms before before
transitioning over to scattered wet. Western and Central Humboldt
are expected to stay mainly dry storms and a Red Flag has been
issued for this afternoon and evening. South of I80 expect
scattered showers and thunderstorms, with moderate to possibly
heavy rains possible as PWAT values jump to around an inch,
surface dew points increase to around 50 degrees and overall storm
motion will be slow to the north. Overnight RH recoveries will
begin to have decent improvements over Central NV tonight.
Recoveries continue to improve tomorrow night and Monday night
across most of central and northern NV as mid and surface moisture
increases. Expect additional scattered wet showers and
thunderstorms Monday and Tuesday before drier air works in from
the west mid to late week, diminishing overage thunderstorm
coverage. There is the potential that similar conditions will
exist in fire zone 467 for additional dry thunderstorms on Monday
but confidence is low at this time.

&&

.LKN WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning from 2 PM this afternoon to 11 PM PDT this
evening for Central and Western Humboldt County.

&&

89/91/91/89

In the hours before

Special weather statement, Jul 23, 12:30 PM PDT, 1 hour 16 minutes before

Special Weather Statement
National Weather Service Elko NV
1230 PM PDT SUN JUL 23 2017

NVZ037-040-232015-
Northwestern Nye County NV-
Southern Lander County and Southern Eureka County NV-
1230 PM PDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL LANDER AND
NORTHWESTERN NYE COUNTIES UNTIL 115 PM PDT...

At 1230 PM PDT, Doppler radar was tracking a strong thunderstorm 15
miles west of Kingston. this storm was nearly stationary.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Railroad Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 3915 11741 3933 11754 3947 11726 3935 11715
      3921 11713
TIME...MOT...LOC 1930Z 251DEG 2KT 3927 11736

DS

Special weather statement, Jul 23, 12:44 PM PDT, 1 hour 2 minutes before

Special Weather Statement
National Weather Service Elko NV
1244 PM PDT SUN JUL 23 2017

NVZ035-037-041-232030-
Southern Lander County and Southern Eureka County NV-
Northeastern Nye County NV-White Pine County NV-
1244 PM PDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN NYE...WEST CENTRAL WHITE
PINE AND SOUTHEASTERN EUREKA COUNTIES UNTIL 130 PM PDT...

At 1243 PM PDT, Doppler radar was tracking a strong thunderstorm near
Eureka, moving northeast at 15 mph.

Dime size hail and wind gusts 40 to 50 mph will be possible with this
storm.

Locations impacted include...
Eureka, Pinto Summit, Eureka Airport and Antelope Peak.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 3914 11629 3938 11649 3969 11599 3940 11574
TIME...MOT...LOC 1943Z 229DEG 21KT 3945 11603

DS

Special weather statement, Jul 23, 12:47 PM PDT, 59 minutes before

Special Weather Statement
National Weather Service Elko NV
1247 PM PDT SUN JUL 23 2017

NVZ035-232030-
White Pine County-
1247 PM PDT SUN JUL 23 2017

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL WHITE PINE COUNTY...

At 1245 PM PDT, a strong thunderstorm was located near Ely Airport,
drifting slowly to the northeast.

Wind gusts up to 50 mph are possible with this storm.

Locations impacted include...
Ely, Ruth, Ely Airport and McGill.

Cloud to ground lightning is occurring with this storm. Lightning
can strike 10 miles away from a thunderstorm. Seek a safe shelter
inside a building or vehicle.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

LAT...LON 3920 11491 3935 11513 3951 11490 3932 11473
TIME...MOT...LOC 1945Z 240DEG 48KT 3936 11491

DLW

Special weather statement, Jul 23, 1:14 PM PDT, 32 minutes before

Special Weather Statement
National Weather Service Elko NV
114 PM PDT SUN JUL 23 2017

NVZ035>037-232100-
Southern Lander County and Southern Eureka County NV-
White Pine County NV-
Northern Lander County and Northern Eureka County NV-
114 PM PDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN WHITE PINE AND SOUTHERN
EUREKA COUNTIES UNTIL 200 PM PDT...

At 113 PM PDT, Doppler radar was tracking a strong thunderstorm near
Garden Pass, moving northeast at 30 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Diamond Valley and Garden Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 3950 11630 3974 11659 4020 11617 3984 11575
TIME...MOT...LOC 2013Z 228DEG 28KT 3987 11611

DS

Special weather statement, Jul 23, 1:18 PM PDT, 28 minutes before

Special Weather Statement
National Weather Service Elko NV
118 PM PDT SUN JUL 23 2017

NVZ035-232045-
White Pine County-
118 PM PDT SUN JUL 23 2017

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL WHITE PINE COUNTY...

At 116 PM PDT, a strong thunderstorm was located 7 miles east of
McGill, drifting slowly to the northeast.

Locations impacted include...
McGill.

Cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional
information and possible warnings from the National Weather Service.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

LAT...LON 3932 11473 3941 11481 3953 11470 3940 11451
      3929 11463
TIME...MOT...LOC 2016Z 235DEG 15KT 3940 11465

DLW

Special weather statement, Jul 23, 1:22 PM PDT, 24 minutes before

Special Weather Statement
National Weather Service Elko NV
122 PM PDT SUN JUL 23 2017

NVZ037-232100-
Southern Lander County and Southern Eureka County NV-
122 PM PDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LANDER COUNTY UNTIL
200 PM PDT...

At 120 PM PDT, Doppler radar was tracking a strong thunderstorm near
New Pass Summit, moving northeast at 20 mph.

Dime size hail and wind gusts 40 to 50 mph will be possible with this
storm.

Locations impacted include...
New Pass Summit, Austin and Railroad Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 3934 11765 3946 11765 3949 11760 3952 11759
      3953 11749 3962 11746 3964 11749 3968 11746
      3970 11748 3984 11736 3957 11691 3916 11741
TIME...MOT...LOC 2020Z 220DEG 17KT 3946 11740

DS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 5:27 PM PDT	Special Weather Statement	LKN		48 min
Jul 23, 11:52 AM PDT	Special Weather Statement	LKN		38 min
Jul 23, 12:28 PM PDT	Special Weather Statement	LKN		47 min
Jul 23, 12:30 PM PDT	Special Weather Statement	LKN		45 min
Jul 23, 12:44 PM PDT	Special Weather Statement	LKN		46 min
Jul 23, 12:47 PM PDT	Special Weather Statement	LKN	White Pine	43 min
Jul 23, 1:14 PM PDT	Special Weather Statement	LKN	Eureka	46 min
Jul 23, 1:18 PM PDT	Special Weather Statement	LKN	White Pine	27 min
Jul 23, 1:22 PM PDT	Special Weather Statement	LKN	Lander	38 min
Jul 23, 1:29 PM PDT	Areal Flood Advisory	LKN	White Pine	3 hr
Jul 23, 1:33 PM PDT	Areal Flood Advisory	LKN	Lander	3 hr
Jul 23, 1:38 PM PDT	Flash Flood Warning	LKN	Eureka	3 hr
Jul 23, 1:43 PM PDT	Areal Flood Advisory	LKN	Nye, White Pine	3 hr
Jul 23, 2:03 PM PDT	Special Weather Statement	LKN	Lander	42 min
Jul 23, 2:23 PM PDT	Areal Flood Advisory	LKN	Lander	3 hr
Jul 23, 2:34 PM PDT	Areal Flood Advisory	LKN	White Pine	3 hr
Jul 23, 2:34 PM PDT	Special Weather Statement	LKN	Eureka	56 min
Jul 23, 2:39 PM PDT	Flash Flood Watch	LKN	Elko, Eureka, Humboldt, Lander, Nye, White Pine	56 hr
Jul 23, 3:04 PM PDT	Areal Flood Advisory	LKN	White Pine	3 hr
Jul 23, 3:26 PM PDT	Special Weather Statement	LKN	Eureka	49 min
Jul 23, 4:07 PM PDT	Special Weather Statement	LKN		38 min

Nearby

Severe Thunderstorm Warnings in Nevada, 2017 Every severe thunderstorm warning in 2017

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.