Alert archive / California / Flash Flood Warnings in 2022
Flash Flood Warning 9, NWS Hanford, CA
NWS Hanford, CA issued this flash flood warning at Aug 4, 2022, 2:17 PM PDT for Tulare 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 counties it named.
The facts
- Issued
- Aug 4, 2022, 2:17 PM PDT (21:17 UTC)
- Expired
- Aug 4, 2022, 5:45 PM PDT
- In force
- 3 hr
- Issued by
- NWS Hanford, CA
- Area
- Storm-based polygon
- Flood severity
- None
County Tulare County, CA
The radar
The San Joaquin Valley radar (KHNX), 75 km from the middle of the area, began a volume at 21:21 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, 9.3 hours before the alert went out and 293 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
- 326 J/kg
- Mixed-layer CIN
- -216 J/kg
- Mixed-layer LCL
- 2768 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- -2 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 warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Hanford, CA wrote its last area forecast discussion before this flash flood warning went out at Aug 4, 1:02 PM PDT, 1 hour 15 minutes earlier.
Area forecast discussion, Aug 4, 1:02 PM PDT, 1 hour 15 minutes before
Area Forecast Discussion National Weather Service Hanford CA 102 PM PDT Thu Aug 4 2022 .SYNOPSIS... The above average heat will subside after today. The monsoon moisture will be the main story for the next two days as most of the eastern portion of the forecast area including the Sierra Nevada, Tehachapi, and the Kern County Desert will have at least a 20% chance of thunderstorms and rain with the SIerras having over 50% chance. && .DISCUSSION... Currently, we have a ridge parked over the Four Corners which is leading to the advection of monsoonal moisture into our forecast area. This combination of moisture and above average temperatures will contribute to more thunderstorms today especially in the Kern County Desert and the Sierras. In addition, the moisture will bring a near 20% chance of rain overnight on Friday to some of the Valley locations such as Visalia and Bakersfield. Flash Flooding is possible in the mountains during this time especially if the storms produce rain at a rate of 1-2 inch/hour. Flash Flood warnings may be issued for the mountains if the radar detects significant rainfall. On Friday, the ridge will move out of the area with an approaching trough. The trough will get the temperatures to drop back down to average and the rain chances will taper off including the Sierra Friday night. Most locations will have a probability of 50% and above of temperatures at or below 100 degrees on Friday. The temperatures will remain at seasonal average into the middle of next week as the trough begins to trek up north towards Oregon which will also shut off the monsoon moisture tap. Both the GEFS and European model ensembles are in good agreement about the trough off the Pacific coast and have the center of the ridge being over Colorado and New Mexico. && .AVIATION... VFR conditions will prevail for the next 24 hours. The only concern will be thunderstorms which will taper off and be spotty starting at 05Z but will pick up with an increase of moisture at 09Z. && .AIR QUALITY ISSUES... On Thursday August 4 2022... Unhealthy for Sensitive Groups in Fresno... Kern and Tulare Counties... and Sequoia National Park and Forest. && .CERTAINTY... The level of certainty for days 1 and 2 is high. The level of certainty for days 3 through 7 is medium. Certainty levels include low...medium...and high. Please visit www.weather.gov/hnx/certainty.html for additional information an/or to provide feedback. && .HNX WATCHES/WARNINGS/ADVISORIES... None. && JPK weather.gov/hanford
The office that day
Everything else NWS Hanford, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 5:04 PM PDT | Areal Flood Advisory | HNX | Fresno | 116 min |
| Aug 3, 5:07 PM PDT | Areal Flood Advisory | HNX | Madera | 3 hr |
| Aug 3, 5:13 PM PDT | Special Weather Statement | HNX | Mono | 47 min |
| Aug 4, 12:39 PM PDT | Flash Flood Warning | HNX | Tulare | 59 min |
| Aug 4, 1:23 PM PDT | Flash Flood Warning | HNX | Fresno, Tulare | 59 min |
| Aug 4, 1:44 PM PDT | Flash Flood Warning | HNX | Kern | 59 min |
| Aug 4, 2:08 PM PDT | Flash Flood Warning | HNX | Kern | 112 min |
| Aug 4, 2:22 PM PDT | Flash Flood Warning | HNX | Mariposa, Tuolumne | 83 min |
| Aug 4, 2:40 PM PDT | Flash Flood Warning | HNX | Kern | 65 min |
| Aug 4, 4:05 PM PDT | Flash Flood Warning | HNX | Madera | 115 min |
| Aug 4, 4:14 PM PDT | Flash Flood Warning | HNX | Fresno | 106 min |
| Aug 4, 4:38 PM PDT | Flash Flood Warning | HNX | Kern | 2 hr |
| Aug 4, 4:40 PM PDT | Special Weather Statement | HNX | Kern | 35 min |
| Aug 4, 4:53 PM PDT | Special Weather Statement | HNX | Madera | 37 min |
Nearby
Flash Flood Warnings in California, 2022Every flash flood warning in 2022
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.