Alert archive / California / Special Weather Statements in 2018
Special Weather Statement, NWS Reno, NV
NWS Reno, NV issued this special weather statement at Jul 20, 2018, 11:31 AM PDT for Lyon County, Nevada; Alpine County, Mono County, California. It was in force for 3 hr. 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 20, 2018, 11:31 AM PDT (18:31 UTC)
- Expired
- Jul 20, 2018, 2:30 PM PDT
- In force
- 3 hr
- Issued by
- NWS Reno, NV
Counties Alpine County, CA, Mono County, CA, Lyon County, NV
The radar
The San Joaquin Valley radar (KHNX), 189 km from the middle of the area, began a volume at 18:32 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, 6.5 hours before the alert went out and 194 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2961 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- -31 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 Reno, NV wrote its last area forecast discussion before this special weather statement went out at Jul 20, 6:12 AM PDT, 5 hours 19 minutes earlier.
Area forecast discussion, Jul 20, 6:12 AM PDT, 5 hours 19 minutes before
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<title>Service Notice</title>
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</head>
<body>
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<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
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Please try again in a few minutes.
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</html>In the hours before
Special weather statement, Jul 20, 11:31 AM PDT, 0 minutes before
Special Weather Statement
National Weather Service Reno NV
1131 AM PDT FRI JUL 20 2018
CAZ072-073-NVZ001-003-202130-
Greater Lake Tahoe Area CA-Mono CA-Greater Reno-Carson City-
Minden Area NV-Mineral and Southern Lyon Counties NV-
1131 AM PDT FRI JUL 20 2018
...SCATTERED THUNDERSTORMS DEVELOPING THIS AFTERNOON...
Thunderstorms are developing early this afternoon in Mono, Mineral
and southern Lyon counties. Storms are expected to become stronger
through the afternoon and spread north towards I-80.
Nickel size hail, frequent lightning, and wind gusts up to 50 mph
will be possible with these storms. Localized flash flooding will
also be possible, especially in steep terrain and over wildfire burn
scars.
Locations impacted include...
Mammoth Lakes, Bodie, Chalfant, Crowley Lake, Sonora Pass, Benton,
June Lake, Bridgeport, Lee Vining, Twin Lakes, Toms Place, Mono Lake,
Coleville, Topaz Lake, Hawthorne, Yerington, Wellington, Tioga Pass,
Smith and Oasis.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
During a thunderstorm, seek shelter inside a sturdy structure and
stay away from windows. Lightning can strike 10 miles away from a
thunderstorm. Hikers and campers should seek shelter in a vehicle if
possible.
&&
LAT...LON 3748 11885 3759 11903 3774 11913 3771 11923
3775 11926 3779 11920 3788 11920 3795 11932
3804 11931 3820 11963 3845 11968 3873 11999
3909 11911 3810 11811 3789 11835 3789 11842
3747 11783 3746 11784
TIME...MOT...LOC 1824Z 240DEG 0KT 3887 11906
ZTThe office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 2:18 PM PDT | Flash Flood Warning | REV | Douglas | 3 hr |
| Jul 20, 2:24 PM PDT | Areal Flood Warning | REV | Lyon | 3 hr |
| Jul 20, 4:55 PM PDT | Areal Flood Advisory | REV | Mono | 2 hr |
Nearby
Special Weather Statements in California, 2018Special Weather Statements in Nevada, 2018Every special weather statement 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.