Alert archive / Arizona / Flash Flood Watches in 2012
Flash Flood Watch 2, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood watch at Jul 29, 2012, 9:56 AM MST for 6 counties in Arizona. It took effect at Jul 29, 2012, 12:00 PM MST. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Jul 29, 2012, 9:56 AM MST (16:56 UTC)
- In effect from
- Jul 29, 2012, 12:00 PM MST
- Expired
- Jul 29, 2012, 8:05 PM MST
- In force
- 8 hr
- Issued by
- NWS Tucson, AZ
- Flood severity
- None
Counties Cochise County, AZ, Graham County, AZ, Greenlee County, AZ, Pima County, AZ, Pinal County, AZ, Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 61 km from the middle of the area, began a volume at 16:59 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
Tuscon, AZ (KTUS), launched 12:00Z, 4.9 hours before the alert went out and 49 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
- 397 J/kg
- Mixed-layer CIN
- -117 J/kg
- Mixed-layer LCL
- 1146 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
044 WGUS65 KTWC 291656 FFATWC URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE TUCSON AZ 956 AM MST SUN JUL 29 2012 ...HEAVY RAIN ACROSS PORTIONS OF SOUTHEAST ARIZONA... AZZ501>515-300100- /O.NEW.KTWC.FF.A.0002.120729T1900Z-120730T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WESTERN PIMA COUNTY-TOHONO O'ODHAM NATION- UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-TUCSON METRO AREA- SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY- UPPER SAN PEDRO RIVER VALLEY- EASTERN COCHISE COUNTY BELOW 5000 FEET-UPPER GILA RIVER VALLEY- WHITE MOUNTAINS OF GRAHAM AND GREENLEE COUNTIES- GALIURO AND PINALENO MOUNTAINS-CHIRICAHUA MOUNTAINS- DRAGOON AND MULE AND HUACHUCA AND SANTA RITA MOUNTAINS- CATALINA AND RINCON MOUNTAINS-BABOQUIVARI MOUNTAINS- INCLUDING THE CITIES OF...AJO...ORGAN PIPE CACTUS N.M....SELLS... NOGALES...TUCSON...GREEN VALLEY...MARANA...VAIL... PICACHO PEAK STATE PARK...MAMMOTH...ORACLE...SIERRA VISTA... BENSON...WILLCOX...CLIFTON...SAFFORD...HANNAGAN MEADOW... MOUNT GRAHAM...CHIRICAHUA NM...BISBEE...CANELO HILLS... MADERA CANYON...MOUNT LEMMON...SUMMERHAVEN 956 AM MST SUN JUL 29 2012 ...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WATCH FOR A PORTION OF SOUTHEAST ARIZONA... INCLUDING THE FOLLOWING AREAS...BABOQUIVARI MOUNTAINS... CATALINA AND RINCON MOUNTAINS...CHIRICAHUA MOUNTAINS...DRAGOON AND MULE AND HUACHUCA AND SANTA RITA MOUNTAINS...EASTERN COCHISE COUNTY BELOW 5000 FEET...GALIURO AND PINALENO MOUNTAINS...SOUTH CENTRAL PINAL COUNTY...SOUTHEAST PINAL COUNTY...TOHONO O'ODHAM NATION...TUCSON METRO AREA...UPPER GILA RIVER VALLEY...UPPER SAN PEDRO RIVER VALLEY...UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY...WESTERN PIMA COUNTY AND WHITE MOUNTAINS OF GRAHAM AND GREENLEE COUNTIES. * THROUGH LATE TONIGHT * A VERY MOIST AND UNSTABLE ATMOSPHERE WILL LEAD TO THE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND TONIGHT WITH STORMS LINGERING INTO THE EARLY MORNING HOURS OF MONDAY. MANY OF THESE STORMS WILL BE CAPABLE OF PRODUCING VERY HEAVY RAIN IN A SHORT PERIOD OF TIME...THUS INCREASING THE THREAT OF FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS ARE BECOMING FAVORABLE FOR WIDESPREAD FLASH FLOODING TO DEVELOP. MONITOR FORECASTS CLOSELY AND BE READY TO TAKE QUICK ACTION IF FLASH FLOOD WARNINGS ARE ISSUED. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR UPDATES ON THIS FLASH FLOOD THREAT. && $$
3 follow-up statements
999 WGUS65 KTWC 292146 FFATWC FLOOD WATCH NATIONAL WEATHER SERVICE TUCSON AZ 246 PM MST SUN JUL 29 2012 ...HEAVY RAIN ACROSS PORTIONS OF SOUTHEAST ARIZONA... AZZ510-292300- /O.CAN.KTWC.FF.A.0002.000000T0000Z-120730T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WHITE MOUNTAINS OF GRAHAM AND GREENLEE COUNTIES- INCLUDING THE CITY OF...HANNAGAN MEADOW 246 PM MST SUN JUL 29 2012 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR A PORTION OF SOUTHEAST ARIZONA HAS BEEN CANCELLED. THE THREAT OF FLASH FLOODING HAS LESSENED THIS AFTERNOON AND NOT EXPECTING WIDESPREAD SHOWERS AND THUNDERSTORMS TONIGHT THAT MAY PRODUCE HEAVY RAIN AND FLASH FLOODING. THUS THE FLASH FLOOD WATCH HAS BEEN CANCELLED. $$ AZZ501>509-511>515-300700- /O.CON.KTWC.FF.A.0002.000000T0000Z-120730T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WESTERN PIMA COUNTY-TOHONO O'ODHAM NATION- UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-TUCSON METRO AREA- SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY- UPPER SAN PEDRO RIVER VALLEY- EASTERN COCHISE COUNTY BELOW 5000 FEET-UPPER GILA RIVER VALLEY- GALIURO AND PINALENO MOUNTAINS-CHIRICAHUA MOUNTAINS- DRAGOON AND MULE AND HUACHUCA AND SANTA RITA MOUNTAINS- CATALINA AND RINCON MOUNTAINS-BABOQUIVARI MOUNTAINS- INCLUDING THE CITIES OF...AJO...ORGAN PIPE CACTUS N.M....SELLS... NOGALES...TUCSON...GREEN VALLEY...MARANA...VAIL... PICACHO PEAK STATE PARK...MAMMOTH...ORACLE...SIERRA VISTA... BENSON...WILLCOX...MOUNT GRAHAM...CHIRICAHUA NM...BISBEE... CANELO HILLS...MADERA CANYON...MOUNT LEMMON...SUMMERHAVEN 246 PM MST SUN JUL 29 2012 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 2 AM MST MONDAY... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHEAST ARIZONA...INCLUDING THE FOLLOWING AREAS...BABOQUIVARI MOUNTAINS...CATALINA AND RINCON MOUNTAINS...CHIRICAHUA MOUNTAINS...DRAGOON AND MULE AND HUACHUCA AND SANTA RITA MOUNTAINS...EASTERN COCHISE COUNTY BELOW 5000 FEET...GALIURO AND PINALENO MOUNTAINS...SOUTH CENTRAL PINAL COUNTY...SOUTHEAST PINAL COUNTY...TOHONO O'ODHAM NATION...TUCSON METRO AREA...UPPER GILA RIVER VALLEY...UPPER SAN PEDRO RIVER VALLEY...UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY AND WESTERN PIMA COUNTY. * UNTIL 2 AM MST MONDAY * SCATTERED SHOWERS AND THUNDERSTORMS...SOME WITH HEAVY RAIN...HAVE BEEN OCCURRING THIS AFTERNOON IN A VERY MOIST AND UNSTABLE ATMOSPHERE. SHOWERS AND THUNDERSTORMS WILL INCREASE IN AREAL COVERAGE INTO THIS EVENING BEFORE DISSIPATING EARLY MONDAY MORNING. MANY OF THESE STORMS WILL BE CAPABLE OF PRODUCING VERY HEAVY RAIN IN A SHORT PERIOD OF TIME...THUS INCREASING THE THREAT OF FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS ARE BECOMING FAVORABLE FOR WIDESPREAD FLASH FLOODING TO DEVELOP. MONITOR FORECASTS CLOSELY AND BE READY TO TAKE QUICK ACTION IF FLASH FLOOD WARNINGS ARE ISSUED. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR UPDATES ON THIS FLASH FLOOD THREAT. && $$
806 WGUS65 KTWC 300104 FFATWC FLOOD WATCH NATIONAL WEATHER SERVICE TUCSON AZ 604 PM MST SUN JUL 29 2012 ...HEAVY RAIN ACROSS PORTIONS OF SOUTHEAST ARIZONA... AZZ508-511-512-300215- /O.CAN.KTWC.FF.A.0002.000000T0000Z-120730T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ EASTERN COCHISE COUNTY BELOW 5000 FEET- GALIURO AND PINALENO MOUNTAINS-CHIRICAHUA MOUNTAINS- INCLUDING THE CITIES OF...WILLCOX...MOUNT GRAHAM...CHIRICAHUA NM 604 PM MST SUN JUL 29 2012 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR A PORTION OF SOUTHEAST ARIZONA HAS BEEN CANCELLED. THE THREAT OF WIDESPREAD FLASH FLOODING HAS LESSENED THIS AFTERNOON AND EVENING WITH LESS SHOWER AND THUNDERSTORM ACTIVITY EXPECTED. THUS THE FLASH FLOOD WATCH HAS BEEN CANCELLED. $$ AZZ501>507-509-513>515-300900- /O.CON.KTWC.FF.A.0002.000000T0000Z-120730T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WESTERN PIMA COUNTY-TOHONO O'ODHAM NATION- UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-TUCSON METRO AREA- SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY- UPPER SAN PEDRO RIVER VALLEY-UPPER GILA RIVER VALLEY- DRAGOON AND MULE AND HUACHUCA AND SANTA RITA MOUNTAINS- CATALINA AND RINCON MOUNTAINS-BABOQUIVARI MOUNTAINS- INCLUDING THE CITIES OF...AJO...ORGAN PIPE CACTUS N.M....SELLS... TUCSON...GREEN VALLEY...MARANA...VAIL...PICACHO PEAK STATE PARK... MAMMOTH...ORACLE...MADERA CANYON...MOUNT LEMMON...SUMMERHAVEN 604 PM MST SUN JUL 29 2012 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 2 AM MST MONDAY... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHEAST ARIZONA...INCLUDING THE FOLLOWING AREAS...BABOQUIVARI MOUNTAINS...CATALINA AND RINCON MOUNTAINS...DRAGOON AND MULE AND HUACHUCA AND SANTA RITA MOUNTAINS...SOUTH CENTRAL PINAL COUNTY...SOUTHEAST PINAL COUNTY...TOHONO O'ODHAM NATION...TUCSON METRO AREA...UPPER GILA RIVER VALLEY...UPPER SAN PEDRO RIVER VALLEY...UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY AND WESTERN PIMA COUNTY. * UNTIL 2 AM MST MONDAY * SCATTERED SHOWERS AND THUNDERSTORMS...SOME WITH HEAVY RAIN... HAVE BEEN OCCURRING THIS AFTERNOON IN A VERY MOIST AND UNSTABLE ATMOSPHERE. SHOWERS AND THUNDERSTORMS ARE STARTING TO DECREASE IN AREAL COVERAGE ACROSS EASTERN AREAS LATE THIS AFTERNOON. ADDITIONAL STORMS WILL BE CAPABLE OF PRODUCING VERY HEAVY RAIN IN A SHORT PERIOD OF TIME...THUS INCREASING THE THREAT OF FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS ARE BECOMING FAVORABLE FOR WIDESPREAD FLASH FLOODING TO DEVELOP. MONITOR FORECASTS CLOSELY AND BE READY TO TAKE QUICK ACTION IF FLASH FLOOD WARNINGS ARE ISSUED. && $$ MEYER
747 WGUS65 KTWC 300305 FFATWC FLOOD WATCH NATIONAL WEATHER SERVICE TUCSON AZ 805 PM MST SUN JUL 29 2012 AZZ501>507-509-513>515-300415- /O.CAN.KTWC.FF.A.0002.000000T0000Z-120730T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WESTERN PIMA COUNTY-TOHONO O'ODHAM NATION- UPPER SANTA CRUZ RIVER VALLEY/ALTAR VALLEY-TUCSON METRO AREA- SOUTH CENTRAL PINAL COUNTY-SOUTHEAST PINAL COUNTY- UPPER SAN PEDRO RIVER VALLEY-UPPER GILA RIVER VALLEY- DRAGOON AND MULE AND HUACHUCA AND SANTA RITA MOUNTAINS- CATALINA AND RINCON MOUNTAINS-BABOQUIVARI MOUNTAINS- INCLUDING THE CITIES OF...AJO...TUCSON...GREEN VALLEY...MARANA... VAIL...PICACHO PEAK STATE PARK...MAMMOTH...ORACLE... MADERA CANYON...MOUNT LEMMON...SUMMERHAVEN 805 PM MST SUN JUL 29 2012 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR A PORTION OF SOUTHEAST ARIZONA HAS BEEN CANCELLED. ADDITIONAL LIGHT TO MODERATE RAINFALL IS POSSIBLE OVERNIGHT WITH RUNOFF AND ELEVATED WASH LEVELS CONTINUING FROM EARLIER EXCESSIVE RAINFALL...HOWEVER THE THE WIDESPREAD FLASH FLOOD POTENTIAL HAS SIGNIFICANTLY DIMINISHED. $$ MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 5:32 PM MST | Areal Flood Advisory | TWC | Pinal | 118 min |
| Jul 28, 6:00 PM MST | Areal Flood Advisory | TWC | Pima | 90 min |
| Jul 29, 11:23 AM MST | Special Weather Statement | TWC | 37 min | |
| Jul 29, 11:43 AM MST | Areal Flood Advisory | TWC | Pima | 92 min |
| Jul 29, 12:44 PM MST | Special Weather Statement | TWC | Graham | 31 min |
| Jul 29, 1:19 PM MST | Areal Flood Advisory | TWC | Cochise, Pima, Santa Cruz | 3 hr |
| Jul 29, 2:01 PM MST | Special Weather Statement | TWC | 44 min | |
| Jul 29, 2:16 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 119 min |
| Jul 29, 2:44 PM MST | Flash Flood Warning | TWC | Pima | 91 min |
| Jul 29, 3:12 PM MST | Areal Flood Advisory | TWC | Pinal | 2 hr |
| Jul 29, 3:26 PM MST | Special Weather Statement | TWC | Pinal | 49 min |
| Jul 29, 4:13 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
Nearby
Flash Flood Watches in Arizona, 2012Every flash flood watch 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.