Alert archive / Nevada / Flash Flood Watches in 2018
Flash Flood Watch 6, NWS Elko, NV
NWS Elko, NV issued this flash flood watch at Jul 11, 2018, 1:40 PM PDT for Nye County, White Pine County, Nevada. It took effect at Jul 12, 2018, 11:00 AM PDT. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Jul 11, 2018, 1:40 PM PDT (20:40 UTC)
- In effect from
- Jul 12, 2018, 11:00 AM PDT
- Expired
- Jul 12, 2018, 9:34 PM PDT
- In force
- 11 hr
- Issued by
- NWS Elko, NV
- Flood severity
- None
Counties Nye County, NV, White Pine County, NV
The radar
The Elko radar (KLRX), 242 km from the middle of the area, began a volume at 20:40 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
Las Vegas, NV (KVEF), launched 12:00Z, 8.7 hours before the alert went out and 263 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
- 380 J/kg
- Mixed-layer CIN
- -142 J/kg
- Mixed-layer LCL
- 1940 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch 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 flash flood watch went out at Jul 11, 2:55 AM PDT, 10 hours 45 minutes earlier.
Area forecast discussion, Jul 11, 2:55 AM PDT, 10 hours 45 minutes before
Area Forecast Discussion National Weather Service Elko NV 255 AM PDT Wed Jul 11 2018 .SYNOPSIS...Dry with above normal temperatures across northern Nevada today and Thursday, with near normal temperatures and thunderstorm activity across central NV. && .SHORT TERM...Today through Thursday. Weak trough energy moving through the Pacific NW today will push dry and stable air down into northern NV. As such, the northerly expansion of thunderstorms up from central NV will be delayed. Temperatures across northern NV will remain nearly 10 degrees above normal the next couple days. As for central NV, thunderstorm activity will redevelop today across most of northern Nye and White Pine Counties, where temperatures will be near normal. .LONG TERM...Thursday night through next Tuesday. Subtropical ridge over the Great Basin will be the prevailing large scale pattern with subtle day to day changes. The best diurnal convection will be a daily occurrence over the central Nevada terrain, but convective threat diminishes farther north. The highest probability for afternoon storms appears to be Friday afternoon, as southeast flow keeps the monsoonal moisture feed into Nevada. Convective potential may expand as far north as the northern NV border. This moisture tap weakens as a trough moves across the Pacific Northwest, shifting mid level flow shifts to westerly by Saturday. Moisture continues to circulate around the high core, but precipitable water values will be lower with drier air along the northern border. With respect to temperatures, above normal temps continues each day, including the morning hours. Could be quite hot by next Tuesday if the subtropical high becomes centered over Nevada. && .AVIATION...Thunderstorms are expected in the vicinity of KELY and KTPH this afternoon. Strong wind gusts to 40 kts may occur from nearby storms, with brief moderate to heavy rain if a storms moves directly over the airport site. KWMC, KBAM and KEKO will be in a drier and stable regime for the next 24 hours, where no storms are expected. && .FIRE WEATHER...Little to no northerly expansion of thunderstorm activity today, with most storms centered over zones 455 and 457 where moderate to heavy rainfall is possible. For zones 467 468 and 469 along with northern 470, dry conditions continue, with temperatures remaining around 10 degrees above normal. && .LKN WATCHES/WARNINGS/ADVISORIES... Flash Flood Watch from 11 AM PDT this morning through this evening for Northeastern Nye County-Northwestern Nye County-Ruby Mountains/East Humboldt Range-South Central Elko County- Southeastern Elko County-White Pine County. && 96
The office that day
Everything else NWS Elko, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 6:04 PM PDT | Special Weather Statement | LKN | 26 min | |
| Jul 10, 6:40 PM PDT | Special Weather Statement | LKN | 50 min | |
| Jul 10, 7:59 PM PDT | Flash Flood Warning | LKN | Nye | 3 hr |
| Jul 10, 8:45 PM PDT | Flash Flood Watch | LKN | Elko, Nye, White Pine | 26 hr |
| Jul 11, 1:10 PM PDT | Flash Flood Warning | LKN | White Pine | 3 hr |
| Jul 11, 1:44 PM PDT | Flash Flood Warning | LKN | White Pine | 3 hr |
| Jul 11, 1:55 PM PDT | Areal Flood Advisory | LKN | Eureka, Lander, Nye, White Pine | 3 hr |
| Jul 11, 1:58 PM PDT | Special Weather Statement | LKN | 47 min | |
| Jul 11, 2:30 PM PDT | Special Weather Statement | LKN | 45 min | |
| Jul 11, 2:40 PM PDT | Special Weather Statement | LKN | 50 min | |
| Jul 11, 2:48 PM PDT | Special Weather Statement | LKN | 42 min | |
| Jul 11, 2:52 PM PDT | Flash Flood Warning | LKN | White Pine | 3 hr |
| Jul 11, 3:40 PM PDT | Areal Flood Advisory | LKN | White Pine | 3 hr |
| Jul 11, 3:49 PM PDT | Areal Flood Advisory | LKN | Nye, White Pine | 3 hr |
Nearby
Flash Flood Watches in Nevada, 2018Every flash flood watch in 2018
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.