National Weather Service United States Department of Commerce

Heavy Rain and Flash Flooding Threat in Montana; Severe Thunderstorms in the Middle Missouri Valley

A low pressure system will bring heavy to excessive rainfall and high winds across Montana this afternoon. Heavy rainfall totals may lead to scattered flash flooding concerns. A line of showers and strong to severe thunderstorms will move into the mid Missouri Valley region this afternoon producing severe winds and isolated large hail with stronger storms. Read More >

Effective September 2021, the NWS office in Hanford, California (WFO HNX) will change the names and geographic boundary of all public forecast zones. Upon implementation of this change, all-weather forecasts and related products will use the new zone names and boundaries shown below.

 

Why is NWS Hanford Proposing to Change the Forecast Zone Names?

 

These changes are intended to provide increased flexibility and improved accuracy of forecasts and various watches, warnings, and
advisories in the public weather program. These changes will result in more geographically precise forecast, watch, and warning
products for the general public and will enhance web-based graphical product consistency and appearance.

CURRENT ZONE NAME / UGC

NEW ZONE NAME / UGC

Westside Hills / CAZ179

Westside Mountains North of 198 / CAZ300

Coalinga - Avenal / CAZ304

Westside Mountains South of 198 / CAZ308

San Joaquin Confluence / CAZ180 

Los Banos-Dos Palos / CAZ301

Merced and Madera / CAZ181

Merced-Madera-Mendota / CAZ302

Planada-LeGrand-Snelling / CAZ303

Western San Joaquin Valley / CAZ182

A portion of Westside of Fresno and Kings Counties / CAZ305

Foggy Bottom / CAZ183

Caruthers - San Joaquin - Selma / CAZ306

A portion of Hanford - Corcoran - Lemoore / CAZ311

Fresno / CAZ184

Fresno - Clovis / CAZ307

NRN CAZ312

Tulare county / CAZ185

SRN CAZ312

Southern Kings County / CAZ186

SRN Hanford - Corcoran - Lemoore / CAZ311

SRN Westside of Fresno and Kings Counties / CAZ305

Western San Joaquin Valley in Kern County / CAZ187

Buttonwillow- Lost Hills - I5 / CAZ309

WRN Delano - Wasco - Shafter / CAZ310

Eastern San Joaquin Valley in Kern County / CAZ188

ERN Delano - Wasco - Shafter / CAZ310

Southeast San Joaquin Valley / CAZ315

Bakersfield / CAZ189

Buena Vista / CAZ313

Bakersfield / CAZ314

South End San Joaquin Valley / CAZ316

Central Sierra Foothills / CAZ190

Mariposa - Madera Foothills / CAZ317

Mariposa - Madera Lower Sierra / CAZ318

A portion of Fresno - Tulare Foothills / CAZ319

A portion of Fresno - Tulare Lower Sierra / CAZ320

Southern Sierra Foothills / CAZ191

A portion of Fresno - Tulare Foothills / CAZ319

A portion of Fresno - Tulare Lower Sierra / CAZ320

South End Sierra Foothills / CAZ321

South End of the Lower Sierra / CAZ322

Central Sierra / CAZ192

Yosemite NP Outside of the Valley / CAZ323

Yosemite Valley / CAZ324

San Joaquin River Canyon / CAZ325

Upper San Joaquin River / CAZ326

North Kings River / CAZ193

Kaiser to Rodgers Ridge / CAZ327

Kings Canyon NP / NRN CAZ328

Sequoia-Kings / CAZ194

Kings Canyon NP / SRN CAZ328

Grant Grove Area / CAZ329

Sequoia NP / CAZ330

NRN South End of the Upper Sierra / CAZ331

Lake Isabella / CAZ195

SRN South End of the Upper Sierra / CAZ331

Kern River Valley / CAZ332

Piute - Walker Pass / CAZ333

Tehachapi Area / CAZ196

Tehachapi / CAZ334

Fort Tejon / CAZ197

Grapevine / CAZ335

Frazier Mountain Communities / CAZ336

Indian Wells Valley / CAZ198

Indian Wells Valley / CAZ337

Mojave Desert Slopes / NRN CAZ338

Kern County Desert / CAZ199

Mojave Desert Slopes / SRN CAZ338

Mojave Desert / CAZ339

Table 1: WFO HNX affected public zones

 

AWIPS ID

WMO HEADING

PRODUCT NAME

ZFPHNX

FPUS56 KHNX

Zone Forecast

PFMHNX

FOUS56 KHNX

Point Forecast Matrices

SFTHNX

FPUS66 KHNX

Tabular State Forecast

PNSHNX

NOUS46 KHNX

Public Information Statement

NPWHNX

WWUS76 KHNX

Non-Precipitation Warnings

FFAHNX

WGUS66 KHNX

Flood Watch

SPSHNX

WWUS86 KHNX

Special Weather Statement

WSWHNX

WWUS46 KHNX

Winter Weather Message

AFDHNX

FXUS66 KHNX

Area Forecast Discussion

Table 2: NWS products affected by the WFO Hanford, CA, public zone changes are listed below.

 

Proposed Public Forecast Zones for September 2021

Click the link for a larger image. Image 1: Proposed Public Forecast Zones 

Current Public Forecast Zones (Pre-September 2021)

 

New Public Zones IMG

Click the link for a larger image. Image 2: Current Public Forecast Zones