Alert archive / California / Flash Flood Warnings in 2021
Flash Flood Warning 10, NWS Hanford, CA
NWS Hanford, CA issued this flash flood warning at Jul 30, 2021, 2:52 PM PDT for Fresno County, Madera County, California. It was in force for 38 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 30, 2021, 2:52 PM PDT (21:52 UTC)
- Expired
- Jul 30, 2021, 3:30 PM PDT
- In force
- 38 min
- Issued by
- NWS Hanford, CA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Fresno County, CA, Madera County, CA
The radar
The San Joaquin Valley radar (KHNX), 128 km from the middle of the area, began a volume at 21:55 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, 9.9 hours before the alert went out and 256 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
- 2579 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
912
WGUS56 KHNX 302152
FFWHNX
CAC019-039-302230-
/O.NEW.KHNX.FF.W.0010.210730T2152Z-210730T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Joaquin Valley CA
252 PM PDT Fri Jul 30 2021
The National Weather Service in Hanford CA has issued a
* Flash Flood Warning for...
Northeastern Madera County in central California...
North central Fresno County in central California...
* Until 330 PM PDT.
* At 251 PM PDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. One to two inches of rain has
already fallen per radar estimates. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms in and around the
UPPER CREEK FIRE BURN AREA.
SOURCE...Radar indicated.
IMPACT...Flooding of areas in and around the UPPER CREEK FIRE BURN
AREA.
* Some locations that will experience flooding include...
Nature Point, Lake Thomas Edison, Clover Meadow Wilderness Office,
Mount Tom, High Sierra, Florence Lake, Graveyard Meadow, Green Mtn,
Kaiser Point and Minarets.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move away from recently burned areas. Life-threatening flooding of
creeks, roads and normally dry arroyos is likely. The heavy rains may
trigger rockslides, mudslides and debris flows in steep terrain,
especially in and around these areas.
&&
LAT...LON 3739 11949 3754 11942 3765 11920 3756 11906
3743 11891 3727 11894 3729 11924 3733 11933
3733 11936
FLASH FLOOD...RADAR INDICATED
$$
Andersen1 follow-up statement
107
WGUS76 KHNX 302235
FFSHNX
Flash Flood Statement
National Weather Service San Joaquin Valley CA
335 PM PDT Fri Jul 30 2021
CAC019-039-302244-
/O.EXP.KHNX.FF.W.0010.000000T0000Z-210730T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Madera CA-Fresno CA-
335 PM PDT Fri Jul 30 2021
...THE FLASH FLOOD WARNING FOR NORTHEASTERN MADERA AND NORTH CENTRAL
FRESNO COUNTIES HAS EXPIRED...
This warning has expired, however a new warning has been issued for
some parts of the included location.
LAT...LON 3739 11949 3754 11942 3765 11920 3756 11906
3743 11891 3727 11894 3729 11924 3733 11933
3733 11936
$$
AndersenThe office that day
Everything else NWS Hanford, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 5:20 PM PDT | Flash Flood Warning | HNX | Madera | 3 hr |
| Jul 30, 3:30 PM PDT | Flash Flood Warning | HNX | Fresno, Madera, Mariposa | 60 min |
| Jul 30, 4:02 PM PDT | Flash Flood Warning | HNX | Mariposa, Tuolumne | 116 min |
| Jul 30, 4:08 PM PDT | Special Weather Statement | HNX | Mariposa | 22 min |
| Jul 30, 4:20 PM PDT | Special Weather Statement | HNX | Tuolumne | 40 min |
| Jul 30, 4:30 PM PDT | Special Weather Statement | HNX | Mariposa | 45 min |
| Jul 30, 4:33 PM PDT | Flash Flood Warning | HNX | Mariposa | 57 min |
Nearby
Flash Flood Warnings in California, 2021Every flash flood 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.