Alert archive / California / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 6, NWS Reno, NV
NWS Reno, NV issued this severe thunderstorm warning at Jul 1, 2021, 4:45 PM PDT for Alpine County, California. It was in force for 45 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 1, 2021, 4:45 PM PDT (23:45 UTC)
- Expired
- Jul 1, 2021, 5:30 PM PDT
- In force
- 45 min
- Issued by
- NWS Reno, NV
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Alpine County, CA
The radar
The Reno radar (KRGX), 132 km from the middle of the area, began a volume at 23:46 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, 11.8 hours before the alert went out and 173 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
- 1 J/kg
- Mixed-layer CIN
- -273 J/kg
- Mixed-layer LCL
- 2336 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
755
WUUS55 KREV 012345
SVRREV
CAC003-020030-
/O.NEW.KREV.SV.W.0006.210701T2345Z-210702T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Reno NV
445 PM PDT Thu Jul 1 2021
The National Weather Service in Reno has issued a
* Severe Thunderstorm Warning for...
Alpine County in northern California...
* Until 530 PM PDT.
* At 444 PM PDT, a severe thunderstorm was located 7 miles southeast
of Markleeville, or 9 miles west of Topaz Lake, moving south at 5
to 10 mph.
HAZARD...60 mph wind gusts and quarter size hail. Outflow winds
could impact Markleeville.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, fencing and trees. Hail will impact
drivers headed up Highways 4 and 89.
* Locations impacted include...
Markleeville and Junction CA 89 And CA 4.
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 3853 11979 3858 11985 3859 11986 3871 11980
3870 11964 3852 11961
TIME...MOT...LOC 2344Z 006DEG 5KT 3864 11972
HAIL...1.00IN
WIND...60MPH
$$
CS1 follow-up statement
064
WWUS55 KREV 020023
SVSREV
Severe Weather Statement
National Weather Service Reno NV
523 PM PDT Thu Jul 1 2021
CAC003-020032-
/O.EXP.KREV.SV.W.0006.000000T0000Z-210702T0030Z/
Alpine CA-
523 PM PDT Thu Jul 1 2021
...THE SEVERE THUNDERSTORM WARNING FOR ALPINE COUNTY WILL EXPIRE AT
530 PM PDT...
The storm which prompted the warning has weakened below severe
limits, however heavy rain continues in the vicinity of the Highway
4 and 89 junction southeast of Markleeville. Watch for rock slides
and high flows on creeks.
LAT...LON 3853 11979 3858 11985 3859 11986 3871 11980
3870 11964 3852 11961
TIME...MOT...LOC 0022Z 006DEG 5KT 3859 11973
$$
CSThe office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 12:00 PM PDT | Special Weather Statement | REV | Alpine, Mono | 2 hr |
Nearby
Severe Thunderstorm Warnings in California, 2021Every severe thunderstorm warning 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.