Alert archive / California / Special Weather Statements in 2012
Special Weather Statement, NWS Phoenix, AZ
NWS Phoenix, AZ issued this special weather statement at Jul 30, 2012, 2:45 PM PDT for Imperial 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 30, 2012, 2:45 PM PDT (21:45 UTC)
- Expired
- Jul 30, 2012, 3:30 PM PDT
- In force
- 45 min
- Issued by
- NWS Phoenix, AZ
County Imperial County, CA
The radar
The Yuma radar (KYUX), 49 km from the middle of the area, began a volume at 21:45 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
San Diego, CA (KNKX), launched 12:00Z, 9.8 hours before the alert went out and 216 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
- 1583 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Phoenix, AZ wrote its last area forecast discussion before this special weather statement went out at Jul 30, 12:55 PM PDT, 1 hour 50 minutes earlier.
Area forecast discussion, Jul 30, 12:55 PM PDT, 1 hour 50 minutes before
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</html>Hazardous weather outlook, Jul 30, 5:13 AM PDT, 9 hours 32 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PHOENIX AZ 513 AM MST MON JUL 30 2012 AZZ024-311215- SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS- 513 AM MST MON JUL 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST-CENTRAL ARIZONA. .DAY ONE...TODAY AND TONIGHT. ISOLATED THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING. THUNDERSTORMS MAY PRODUCE FREQUENT LIGHTNING...GUSTY WINDS...AND BRIEF HEAVY RAINFALL WITH LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THUNDERSTORM CHANCES WILL PERSIST THROUGH TUESDAY...BEFORE SLOWLY TRENDING DOWNWARD BY THE END OF THE WEEK. HOWEVER...STORMS WILL REMAIN POSSIBLE PRIMARILY OVER HIGH TERRAIN THROUGH THE END OF THE WEEK. ANY STORMS THAT DEVELOP WILL HAVE THE POTENTIAL TO PRODUCE FREQUENT LIGHTNING...GUSTY WINDS...AND LOCALLY HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY LOCALLY BE NEEDED THIS AFTERNOON. AZZ022-023-027-028-311215- NORTHWEST MARICOPA COUNTY-GREATER PHOENIX AREA- SOUTHWEST MARICOPA COUNTY-NORTHWEST AND NORTH CENTRAL PINAL COUNTY- 513 AM MST MON JUL 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH-CENTRAL ARIZONA. .DAY ONE...TODAY AND TONIGHT. ISOLATED THUNDERSTORMS MAY BE POSSIBLE THIS AFTERNOON AND EVENING...THOUGH CHANCES APPEAR FAR LESS THAN PREVIOUS DAYS. ANY THUNDERSTORMS MAY PRODUCE FREQUENT LIGHTNING...GUSTY WINDS...AND BRIEF HEAVY RAINFALL WITH LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. ISOLATED THUNDERSTORM CHANCES WILL PERSIST THROUGH TUESDAY...WITH PRIMARILY DRY WEATHER EXPECTED FOR THE REMAINDER OF THE WEEK. ANY STORMS WILL HAVE THE CAPABILITY OF PRODUCING FREQUENT LIGHTNING...STRONG WINDS AND LOCALLY HEAVY RAIN. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. AZZ020-021-025-026-CAZ031-311215- LOWER COLORADO RIVER VALLEY AZ-WEST CENTRAL DESERTS- YUMA/MARTINEZ LAKE AND VICINITY-SOUTHWEST DESERTS- LOWER COLORADO RIVER VALLEY CA- 513 AM MST MON JUL 30 2012 /513 AM PDT MON JUL 30 2012/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHWEST ARIZONA...EXTREME WEST-CENTRAL ARIZONA...SOUTHWEST ARIZONA...WEST- CENTRAL ARIZONA AND EXTREME SOUTHEAST CALIFORNIA. .DAY ONE...TODAY AND TONIGHT. THUNDERSTORM CHANCES WILL CONTINUE THROUGH THIS MORNING AND AFTERNOON...WITH THE POTENTIAL FOR OCCASIONAL LIGHTNING...GUSTY WINDS...AND BRIEF HEAVY RAINFALL WITH LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THUNDERSTORM CHANCES WILL CONTINUE THROUGH TUESDAY...WITH PRIMARILY DRY WEATHER EXPECTED THROUGH THE END OF THE WEEK. ANY STORMS WILL HAVE THE CAPABILITY OF PRODUCING STRONG WINDS AND LOCALLY HEAVY RAIN. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE LOCALLY NEEDED TODAY. CAZ030-032-033-311215- JOSHUA TREE NATIONAL PARK-RIVERSIDE COUNTY/EASTERN DESERTS- IMPERIAL COUNTY- 513 AM PDT MON JUL 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHEAST CALIFORNIA AND SOUTHEAST CALIFORNIA. .DAY ONE...TODAY AND TONIGHT. SCATTERED THUNDERSTORMS WILL BE POSSIBLE TODAY ACROSS PARTS OF SOUTHEAST CALIFORNIA. ANY STORMS THAT OCCUR IN THE OUTLOOK AREA WILL CARRY THE THREAT OF FREQUENT LIGHTNING...GUSTY WINDS...AND LOCALLY HEAVY RAINFALL WITH FLOODING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THUNDERSTORM CHANCES WILL CONTINUE ON TUESDAY...WITH PRIMARILY DRY WEATHER EXPECTED FOR THE REMAINDER OF THE WEEK. ANY STORMS ON TUESDAY WILL HAVE THE CAPABILITY OF PRODUCING FREQUENT LIGHTNING...STRONG WINDS AND LOCALLY HEAVY RAIN AND FLOODING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE LOCALLY NEEDED TODAY. NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT WEATHER.GOV/PHOENIX
In the hours before
Local storm report, Jul 30, 10:35 AM PDT, 4 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
1035 AM MST MON JUL 30 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0620 PM FLASH FLOOD 2 SSW SAN TAN VALLEY 33.14N 111.59W
07/29/2012 PINAL AZ FIRE DEPT/RESCUE
*** 1 FATAL *** TWO YEAR OLD CHILD DROWNED IN FLOODED
WASH BEHIND HOME IN QUEEN CREEK...PINAL COUNTY.
&&
EVENT NUMBER PSR1200202
WATERSSpecial weather statement, Jul 30, 1:23 PM PDT, 1 hour 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 123 PM MST MON JUL 30 2012 CAZ032-302100- RIVERSIDE CA- 123 PM PDT MON JUL 30 2012 ...SIGNIFICANT WEATHER ADVISORY... THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... EAST CENTRAL RIVERSIDE COUNTY IN SOUTHERN CALIFORNIA UNTIL 200 PM PDT AT 116 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A COUPLE OF STRONG THUNDERSTORMS NEAR INTERSTATE 10 BETWEEN BLYTHE AND DESERT CENTER. THIS STORM WAS NEARLY STATIONARY. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. SOME UNSECURED OBJECTS WILL BE BLOWN AROUND...TREE LIMBS COULD BE SNAPPED OFF...AND ISOLATED POWER OUTAGES WILL BE POSSIBLE. SEEK SHELTER INDOORS UNTIL THE STORM PASSES. VERY HEAVY RAINFALL MAY CAUSE TEMPORARY PONDING ON SOME ROADS AND MINOR FLOODING OF POOR DRAINAGE AREAS. IN HEAVY RAINFALL SLOW DOWN TO REDUCE THE RISK OF HYDROPLANING...AND LEAVE A SAFE DISTANCE BETWEEN YOURSELF AND OTHER VEHICLES. LAT...LON 3350 11490 3357 11513 3380 11502 3385 11476 TIME...MOT...LOC 2020Z 022DEG 2KT 3362 11498 AJ
Special weather statement, Jul 30, 1:25 PM PDT, 1 hour 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 125 PM MST MON JUL 30 2012 CAZ032-302100- RIVERSIDE CA- 125 PM PDT MON JUL 30 2012 ...SIGNIFICANT WEATHER ADVISORY... THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... EAST CENTRAL RIVERSIDE COUNTY IN SOUTHERN CALIFORNIA UNTIL 200 PM PDT AT 116 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A COUPLE OF STRONG THUNDERSTORMS NEAR INTERSTATE 10 BETWEEN BLYTHE AND DESERT CENTER. THESE STORMS WERE NEARLY STATIONARY. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN. SOME UNSECURED OBJECTS WILL BE BLOWN AROUND...TREE LIMBS COULD BE SNAPPED OFF...AND ISOLATED POWER OUTAGES WILL BE POSSIBLE. SEEK SHELTER INDOORS UNTIL THE STORM PASSES. VERY HEAVY RAINFALL MAY CAUSE TEMPORARY PONDING ON SOME ROADS AND MINOR FLOODING OF POOR DRAINAGE AREAS. IN HEAVY RAINFALL SLOW DOWN TO REDUCE THE RISK OF HYDROPLANING...AND LEAVE A SAFE DISTANCE BETWEEN YOURSELF AND OTHER VEHICLES. LAT...LON 3350 11490 3357 11513 3380 11502 3385 11476 TIME...MOT...LOC 2020Z 022DEG 2KT 3362 11498 AJ
Special weather statement, Jul 30, 2:45 PM PDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 245 PM MST MON JUL 30 2012 CAZ031-033-302230- IMPERIAL CA- 245 PM PDT MON JUL 30 2012 ...SIGNIFICANT WEATHER ADVISORY... THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... EAST CENTRAL IMPERIAL COUNTY IN SOUTHEAST CALIFORNIA UNTIL 330 PM PDT AT 240 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 12 MILES NORTH OF ALGODONES DUNES. THIS STORM WAS NEARLY STATIONARY. LOCALLY DENSE BLOWING DUST IS POSSIBLE AS WELL AS PERIODS OF HEAVY RAINFALL. GUSTY WINDS OF 40 TO 45 MPH AND FREQUENT LIGHTNING ARE ALSO POSSIBLE. LOCATIONS IMPACTED INCLUDE... RURAL EASTERN IMPERIAL COUNTY... SOME UNSECURED OBJECTS COULD BE BLOWN AROUND. SEEK SHELTER INDOORS UNTIL THE STORM PASSES. LAT...LON 3279 11480 3280 11504 3303 11501 3301 11481 TIME...MOT...LOC 2143Z 001DEG 1KT 3292 11492 NOLTE
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 5:03 PM PDT | Flash Flood Warning | PSR | Maricopa, Pinal | 87 min |
| Jul 29, 5:09 PM PDT | Severe Thunderstorm Warning | PSR | Maricopa | 16 min |
| Jul 29, 5:42 PM PDT | Areal Flood Advisory | PSR | Gila | 48 min |
| Jul 29, 6:02 PM PDT | Areal Flood Advisory | PSR | Maricopa, Pinal | 118 min |
| Jul 29, 6:31 PM PDT | Areal Flood Advisory | PSR | Maricopa, Pinal | 119 min |
| Jul 29, 6:55 PM PDT | Areal Flood Advisory | PSR | Maricopa | 2 hr |
| Jul 29, 8:07 PM PDT | Areal Flood Advisory | PSR | Maricopa | 113 min |
| Jul 29, 8:26 PM PDT | Areal Flood Advisory | PSR | Maricopa, Pinal | 3 hr |
| Jul 29, 9:09 PM PDT | Areal Flood Advisory | PSR | Maricopa, Yuma | 3 hr |
| Jul 29, 10:36 PM PDT | Areal Flood Advisory | PSR | Maricopa | 114 min |
| Jul 30, 8:46 AM PDT | Areal Flood Advisory | PSR | La Paz | 104 min |
| Jul 30, 12:25 PM PDT | Flash Flood Watch | PSR | 9 hr | |
| Jul 30, 1:23 PM PDT | Special Weather Statement | PSR | 37 min | |
| Jul 30, 1:25 PM PDT | Special Weather Statement | PSR | 35 min | |
| Jul 30, 4:25 PM PDT | Special Weather Statement | PSR | La Paz | 35 min |
| Jul 30, 1:30 PM PDT | Areal Flood Advisory | PSR | Riverside | 2 hr |
| Jul 30, 2:23 PM PDT | Areal Flood Advisory | PSR | Riverside, San Bernardino | 52 min |
| Jul 30, 3:12 PM PDT | Flash Flood Warning | PSR | Imperial | 3 hr |
| Jul 30, 3:33 PM PDT | Areal Flood Advisory | PSR | Imperial, Riverside | 57 min |
| Jul 30, 4:15 PM PDT | Areal Flood Advisory | PSR | Imperial | 24 min |
| Jul 30, 4:38 PM PDT | Flash Flood Warning | PSR | Imperial | 3 hr |
| Jul 30, 4:50 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 40 min |
Nearby
Special Weather Statements in California, 2012Every special weather statement in 2012
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.