Alert archive / California / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 2, NWS Hanford, CA

June 30, 2021Fresno County, Madera County, California

NWS Hanford, CA issued this severe thunderstorm warning at Jun 30, 2021, 2:51 PM PDT for Fresno County, Madera County, California. It was in force for 24 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: Jun 30, 2021, 2:51 PM PDT (21:51 UTC)
Expired: Jun 30, 2021, 3:15 PM PDT
In force: 24 min
Issued by: NWS Hanford, CA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Fresno County, CA, Madera County, CA

The radar

The San Joaquin Valley radar (KHNX), 123 km from the middle of the area, began a volume at 21:51 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

Oakland, CA (KOAK), launched 12:00Z, 9.9 hours before the alert went out and 257 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: 1078 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: -25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

481 
WUUS56 KHNX 302151
SVRHNX
CAC019-039-302215-
/O.NEW.KHNX.SV.W.0002.210630T2151Z-210630T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service San Joaquin Valley CA
251 PM PDT Wed Jun 30 2021

The National Weather Service in Hanford CA has issued a

* Severe Thunderstorm Warning for...
  East central Madera County in central California...
  North central Fresno County in central California...

* Until 315 PM PDT.

* At 249 PM PDT, a severe thunderstorm was located 12 miles east of
  Oakhurst, or 13 miles southeast of Yosemite South Entrance, moving
  west at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Nature Point, Chilkoot Meadow, Huntington Lake, Minarets and
  Graveyard Meadow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm is likely producing wind damage across the San Joaquin 
drainage. Trees weakend by the Creek Fire could easily fall. SEEK 
SHELTER NOW inside a sturdy structure and stay away from windows!

Wind damage with this storm will occur before any rain or lightning.
Do not wait for the sound of thunder before taking cover. SEEK
SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

&&

LAT...LON 3750 11926 3727 11912 3716 11936 3751 11956
TIME...MOT...LOC 2149Z 073DEG 26KT 3739 11944 

HAIL...<.75IN
WIND...60MPH
 
$$

Dudley

1 follow-up statement

194 
WWUS56 KHNX 302224
SVSHNX

Severe Weather Statement
National Weather Service San Joaquin Valley CA
324 PM PDT Wed Jun 30 2021

CAC019-039-302234-
/O.EXP.KHNX.SV.W.0002.000000T0000Z-210630T2215Z/
Madera CA-Fresno CA-
324 PM PDT Wed Jun 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MADERA AND NORTH
CENTRAL FRESNO COUNTIES HAS EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.

LAT...LON 3750 11926 3727 11912 3716 11936 3751 11956
TIME...MOT...LOC 2224Z 073DEG 26KT 3733 11969 

$$

ab

The office that day

Everything else NWS Hanford, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 2:27 PM PDT	Special Weather Statement	HNX	Madera	33 min
Jun 30, 3:18 PM PDT	Severe Thunderstorm Warning	HNX	Fresno, Madera	27 min
Jun 30, 3:21 PM PDT	Special Weather Statement	HNX		39 min
Jun 30, 3:23 PM PDT	Special Weather Statement	HNX	Mariposa	52 min
Jun 30, 3:42 PM PDT	Areal Flood Advisory	HNX	Madera, Mariposa, Tuolumne	2 hr
Jun 30, 3:51 PM PDT	Special Weather Statement	HNX	Madera	24 min
Jun 30, 3:52 PM PDT	Special Weather Statement	HNX	Madera	23 min

Nearby

Severe Thunderstorm Warnings in California, 2021 Every 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.