Alert archive / Nevada / Special Weather Statements in 2021
Special Weather Statement, NWS Elko, NV
NWS Elko, NV issued this special weather statement at Jul 4, 2021, 2:20 PM PDT. It was in force for 40 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 4, 2021, 2:20 PM PDT (21:20 UTC)
- Expired
- Jul 4, 2021, 3:00 PM PDT
- In force
- 40 min
- Issued by
- NWS Elko, NV
The radar
The Salt Lake City radar (KMTX), 165 km from the middle of the area, began a volume at 21:23 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, 9.3 hours before the alert went out and 46 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.
- Mixed-layer CAPE
- 41 J/kg
- Mixed-layer CIN
- -300 J/kg
- Mixed-layer LCL
- 2639 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- -58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>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 4, 3:45 AM PDT, 10 hours 35 minutes earlier.
Area forecast discussion, Jul 4, 3:45 AM PDT, 10 hours 35 minutes before
Area Forecast Discussion National Weather Service Elko NV 345 AM PDT Sun Jul 4 2021 .SYNOPSIS...A disturbance passing along the northern Nevada border will trigger scattered showers and thunderstorms today, with brief heavy showers and gusty winds possible. Drier and warmer conditions are expected Monday on into next week. && .SHORT TERM...Today through Monday. Shortwave energy over west- central and NW Nevada early this morning will produce instability over much of northern NV later this morning and into this afternoon as the energy pushes NE up into Idaho. The increased instability in combination with significant mid-level moisture will produce showers and thunderstorms over most of northern and portions of central NV today. The driest air and weakest instability today will be over Northern Nye county, where any storms that develop are expected to be isolated. For most of the rest of the CWA, Precipitable Water values between 0.90 and 1.05 and surface Dew Point in the upper 40s to low 50s suggest some cells may again produce some moderate to heavy downpours. CAPE values today are weak to moderate, generally between 50 and 220 J/KG. However, Bulk Shear values are relatively high, suggesting some cells today may be stronger than we have seen in the past week or so. Drier and more stable air pushing up through central NV should help end most of the convection by the mid-evening hours. High pressure building up from the SE on Monday will put an end to showers and thunderstorms, and begin a warming trend. .LONG TERM...Monday night through next Sunday Model agreement continues to see a return of the ridge with a closed upper-level high settle right over the region Tuesday. Heat is expected be the primary concern for the week, but mid-week does present a secondary issue of some fire weather concerns across the region. By Wednesday, model agreement sees a trough pass through the Northern Rockies allowing for the a slight flattening of the ride Wednesday and Thursday. While no precipitation is expected, winds are excepted to pick up those afternoon under what is already excepted to be dry and hot conditions. As it stands current guidance doesn’t expect winds to meet criteria, so products are being held off for now. As the high continues to settle in, dry and warm conditions continue to be the common denominator for each day clear into the following weekend. Look to see temperatures in high 90s to triple digits with a few locations having the potential to break records over the week. Meanwhile, overnight temperatures will provide little in terms of relief from the heat as locations nestled around the low to mid- 60s. West Wendover, especially, will be a concern as lows only drop into the 70s for the week. However, cloud cover from remnant moisture may help alleviate concerns of heat risks and provide some relief to the region. Currently there are no heat related products out for the time frame, but this could changes as models and guidance continue to bring the conditions into better focus. && .AVIATION...A weather disturbance will bring showers and embedded thunderstorms to the area tonight and more so on Sunday. Isolated light showers in the morning will transition to thunderstorms around 18Z or 19Z for all but KTPH, diminishing after 00Z or 01Z. Typical thunderstorm concerns could occur including gusty winds, brief heavy rain with VIS and ceiling reductions and small hail in the strongest cells. Overall conditions improve Sunday night into Monday as high pressure begins to build over the region. && .FIRE WEATHER...Isolated to scattered afternoon and evening showers and thunderstorms are expected today across all of northern and most of central NV. Wettest storms will be over northern FW Zones, with a mix of wet and dry storms over portions of central NV. Warmer and drier conditions are expected across all zones on Monday. && .LKN WATCHES/WARNINGS/ADVISORIES...None. && 96/94/93/96
Hazardous weather outlook, Jul 4, 4:11 AM PDT, 10 hours 9 minutes before
Hazardous Weather Outlook National Weather Service Elko NV 411 AM PDT Sun Jul 4 2021 NVZ030-031-033>041-050000- Humboldt County-Northern Elko County-Southeastern Elko County- Ruby Mountains and East Humboldt Range-White Pine County- Northern Lander County and Northern Eureka County- Southern Lander County and Southern Eureka County- Southwest Elko County-South Central Elko County- Northwestern Nye County-Northeastern Nye County- 411 AM PDT Sun Jul 4 2021 This hazardous weather outlook is for portions of eastern Nevada...north central Nevada...northeast Nevada...northwest Nevada and south central Nevada. .DAY ONE...Today and Tonight. Isolated to scattered showers and thunderstorms are expected across much of northern and portions of central NV today, with brief heavy rains and gusty winds possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Warmer and drier conditions are expected on Monday, and on through most of next week as high pressure rebuilds over the region. Record or near-record high temperatures are possible in many locations beginning on Tuesday. .SPOTTER INFORMATION STATEMENT... Spotters are asked to report weather phenomena according to standard operating procedure.
In the hours before
Special weather statement, Jul 4, 12:58 PM PDT, 1 hour 22 minutes before
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</html>Special weather statement, Jul 4, 1:28 PM PDT, 52 minutes before
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</html>Special weather statement, Jul 4, 1:40 PM PDT, 40 minutes before
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</html>Special weather statement, Jul 4, 2:20 PM PDT, 0 minutes before
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</html>The office that day
Everything else NWS Elko, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 12:45 PM PDT | Heat Advisory | LKN | Elko, Eureka, Humboldt, Lander, Nye | 8 days |
| Jul 4, 1:28 PM PDT | Special Weather Statement | LKN | 32 min | |
| Jul 4, 1:40 PM PDT | Special Weather Statement | LKN | 50 min | |
| Jul 4, 3:19 PM PDT | Special Weather Statement | LKN | 26 min |
Nearby
Special Weather Statements in Nevada, 2021Every special weather statement in 2021
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.