Alert archive / Arizona / Flash Flood Warnings in 2008

Flash Flood Warning 37, NWS Phoenix, AZ

August 28, 2008Maricopa County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Aug 28, 2008, 11:35 PM MST for Maricopa County, Arizona. It was in force for 71 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 28, 2008, 11:35 PM MST (06:35 UTC)
Expired: Aug 29, 2008, 12:46 AM MST
In force: 71 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Flood severity: None

County Maricopa County, AZ

What was reported inside it

Time	Report	Where	Remark
Aug 29, 12:20 AM MST	HEAVY RAIN 0	2 Nw Scottsdale, AZ	0.6 INCHES IN 10 MINUTES. PIMA AND PINNACLE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Phoenix, AZ (KPSR), launched 00:00Z, 6.6 hours before the alert went out and 39 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2017 J/kg
Mixed-layer CIN: -137 J/kg
Mixed-layer LCL: 1808 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KPSR 290635
FFWPSR
AZC013-290830-
/O.NEW.KPSR.FF.W.0037.080829T0635Z-080829T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
1135 PM MST THU AUG 28 2008

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA...
  THIS INCLUDES THE CITIES OF...SCOTTSDALE...PARADISE VALLEY...
  FOUNTAIN HILLS...

* UNTIL 130 AM MST

* AT 1125 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  THUNDERSTORMS PRODUCING HEAVY RAINFALL OVER THE   WARNED AREA.
  BETWEEN 1045 PM AND 1125 PM...IN EXCESS OF 1 INCH OF RAIN FELL
  OVER PORTIONS OF FOUNTAIN HILLS...WITH ONE HALF TO ONE
  INCH COMMON ELSEWHERE IN THE WARNED AREA. STORMS ARE EXPECTED TO
  CONTINUE IN AND NEAR THE WARNED AREA THROUGH AT LEAST 12 30 AM... 
  WITH ADDITIONAL RAINFALL AMOUNTS IN EXCESS OF AN INCH POSSIBLE. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RIO        
  VERDE AND THE BEELINE HIGHWAY

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. 

LAT...LON 3374 11198 3383 11143 3372 11136 3353 11121
      3351 11157 3348 11200

$$

DG

1 follow-up statement

000 
WGUS75 KPSR 290746
FFSPSR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
1246 AM MST FRI AUG 29 2008

AZC013-290755-
/O.CAN.KPSR.FF.W.0037.000000T0000Z-080829T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARICOPA AZ-
1246 AM MST FRI AUG 29 2008

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EAST CENTRAL
MARICOPA COUNTY...

THE HEAVY RAIN HAS DISSIPATED ACROSS SCOTTSDALE AND FOUNTAIN HILLS. 
ADDITIONAL FLASH FLOODING IS NOT ANTICIPATED IN THESE AREAS. 
HOWEVER...MINOR FLOODING OF ROADWAYS MAY STILL OCCUR. DO NOT DRIVE 
INTO WATER OF UNKNOWN DEPTH.

LAT...LON 3374 11198 3383 11143 3372 11136 3353 11121
      3351 11157 3348 11200

$$

HIRSCH

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 Phoenix, AZ wrote its last area forecast discussion before this flash flood warning went out at Aug 28, 8:02 PM MST, 3 hours 33 minutes earlier.

Area forecast discussion, Aug 28, 8:02 PM MST, 3 hours 33 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PHOENIX AZ
802 PM MST THU AUG 28 2008

SOUTH-CENTRAL AND SOUTHWEST ARIZONA...AND SOUTHEAST CALIFORNIA
FORECAST DISCUSSION

.SYNOPSIS...
ISOLATED TO SCATTERED THUNDERSTORMS CAN BE EXPECTED THROUGH THE
EARLY MORNING HOURS ACROSS SOUTH CENTRAL ARIZONA. FOR FRIDAY...HIGH
PRESSURE OFF THE CALIFORNIA COAST WILL BUILD ACROSS THE DESERT
SOUTHWEST...RESULTING IN A WARMING TREND INTO THE WEEKEND. THE
THREAT FOR MONSOON STORMS WILL PERSIST...WITH THE BEST CHANCES SOUTH
AND EAST OF PHOENIX. THE THREAT FOR THUNDERSTORMS WILL INCREASE THIS
WEEKEND AS A STRONG LOW PRESSURE SYSTEM MOVES THROUGH THE REGION.
THE STRONG WEEKEND LOW PRESSURE SYSTEM WILL LEAD TO SIGNIFICANT
COOLING ON SUNDAY. FOLLOWING THE PASSAGE OF THE LOW...A GRADUAL
WARMING AND DRYING TREND IS EXPECTED NEXT WEEK.

&&

.DISCUSSION...
HAVE UPDATED THE FORECAST TO ACCOUNT FOR CURRENT TRENDS ACROSS OUR
EASTERN CWA. ISOLATED THUNDERSTORMS HAVE BEEN DEVELOPING ACROSS
SOUTHERN GILA COUNTY THIS EVENING WITH SOME RATHER IMPRESSIVE
LOOKING STORMS AT TIMES. IT IS PRETTY OBVIOUS THAT THERE IS A LOT OF
INSTABILITY OUT THERE...BUT IT IS ALSO OBVIOUS THAT THERE IS A GOOD
AMOUNT OF INHIBITION ESPECIALLY OVER THE LOWER DESERTS. THE
NORTHERN/WESTERN EXTENT OF THE CONVECTION HAS SLOWLY BU STEADILY
BEEN EDGING TOWARD PHOENIX AND EXPECT THIS TREND TO CONTINUE AS
INHIBITION WEAKENS AS THE LOW LEVEL ATMOSPHERE COOLS SOME AND
OUTFLOW BOUNDARIES PUSH TOWARD PHOENIX. STORMS HAVE HADED VERY GOOD
MOVEMENT SO FAR THIS EVENING...MOVING AT THE MARKLAR RATE OF 40KTS
FORM THE NE. WILL HAVE TO WATCH OUT FOR SVR WIND POTENTIAL WITH
STORMS THROUGH THE EVENING. ONLY MINOR CHANGES MADE TO OTHER GRIDS
THROUGH THE REST OF TONIGHT.

PREVIOUS DISCUSSION...
FRIDAY LOOKS TO BE A SIMILAR DAY TO TODAY...WITH THE UPPER HIGH TO
OUR NW AND A GOOD NELY/ELY STEERING FLOW IN PLACE. MOISTURE REMAINS
PLENTIFUL AND WEAK VORT MAXES WILL LIKELY MOVE WESTWARD AROUND THE
SRN PERIPHERY OF THE HIGH...ENHANCING STORMS AT TIMES. OVERALL
DYNAMICS AGAIN ARE NOT THAT IMPRESSIVE SO WE WILL KEEP A MID GRADE
MONSOON FORECAST IN PLACE.

THE WEEKEND LOOKS TO BE INCREASING ACTIVE AS BOTH EUROPEAN AND GFS
BRING A MAJOR SHORT WAVE TROF INTO THE WESTERN STATES LEADING TO A
PROBABLE TRANSITION TYPE EVENT FOR OUR CWA. MOISTURE WILL BE DRAWN
NORTH INTO THE CWA AHEAD OF THE TROF...THEN INCREASING DYNAMICS/UVV
AND SHEAR WILL ACT ON THE MOISTURE TO GIVE STRONG AND POSSIBLY
SEVERE STORMS TO THE CWA...ESPECIALLY SOUTH-CENTRAL AZ. HAVE RAISED
POPS SATURDAY EVENING TO 40 PLUS OVER SOUTH-CENTRAL AZ...WITH CHANCE
POPS WESTWARD INTO SERN CA...THEN POPS INCREASING A BIT MORE TO
AROUND 50 OVER SOUTH-CENTRAL AZ/SRN GILA SUNDAY AFTERNOON AND
EVENING. WILL ISSUE A SPS TO HIGHLIGHT THE POTENTIAL FOR ACTIVE AND
POSSIBLY SEVERE WEATHER THIS COMING LABOR DAY WEEKEND.

EXTENDED...FLOW NOW LOOKS TO REMAIN MORE WESTERLY BEHIND THE
DEPARTING TROUGH...BASED ON THE LATEST GFS/ECMWF. THIS WILL CONFINE
HIGHEST PRECIP CHANCES TO THE HIGHER TERRAIN EAST OF PHOENIX.
GRADUAL WARMING TREND IS EXPECTED...THOUGH TEMPS SHOULD REMAIN BELOW
NORMAL THROUGH THE PERIOD.

&&

.AVIATION...
KPHX/KIWA AND SURROUNDING AIRFIELDS...
WELL STORMS HAVE BEEN SLOWLY TRENDING TOWARD THE PHX AREA DURING THE
PAST FEW HOURS AND EXPECT THIS TREND TO CONTINUE FOR SEVERAL MORE
HOURS. STORMS WILL BE MOVING FROM NE TO SW AT 30KTS...FAIRLY
PROGRESSIVE FOR OUR AREA. HAVE AMENDED TAFS WITH LATEST THINKING.

IN SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA...
DRY WEATHER EXPECTED AT THE TAFS FOR TONIGHT. SMALL/OUTSIDE CHANCE
OF SEEING THUNDER AT KYUM BUT PROBABILITY NOT HIGH ENOUGH TO INCLUDE
MENTION IN TAFS. OTHERWISE EXPECT SOUTHERLY WINDS THROUGH TOMORROW
AFTERNOON.

AVIATION DISCUSSION NOT UPDATED FOR AMENDED TAFS.

&&

.FIRE WEATHER...
FRIDAY THROUGH TUESDAY...
A DRYING AND WARMING TREND WILL CONTINUE THROUGH FRIDAY. A WEST
COAST WEATHER SYSTEM IS EXPECTED TO MOVE THROUGH THE REGION THIS
WEEKEND...INCREASING HUMIDITY AND THE CHANCE FOR SHOWERS AND
THUNDERSTORMS. COOLER TEMPERATURES CAN ALSO BE EXPECTED OVER THE
WEEKEND. A WARMING AND DRYING TREND WILL COMMENCE MON/TUE OF NEXT
WEEK.

&&

.PSR WATCHES/WARNINGS/ADVISORIES...

AZ...NONE.

CA...NONE.

&&

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

DISCUSSION...INIGUEZ/CB/HIRSCH
AVIATION...INIGUEZ
FIRE WEATHER...WANEK

Hazardous weather outlook, Aug 28, 4:43 AM MST, 18 hours 52 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PHOENIX AZ
443 AM MST THU AUG 28 2008

AZZ020>028-CAZ030>033-282345-
LOWER COLORADO RIVER VALLEY AZ-WEST CENTRAL DESERTS-
NORTHWEST MARICOPA COUNTY-GREATER PHOENIX AREA-
SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS-
YUMA/MARTINEZ LAKE AND VICINITY-SOUTHWEST DESERTS-
SOUTHWEST MARICOPA COUNTY-NORTHWEST AND NORTH CENTRAL PINAL COUNTY-
JOSHUA TREE NATIONAL PARK-LOWER COLORADO RIVER VALLEY CA-
RIVERSIDE COUNTY/EASTERN DESERTS-IMPERIAL COUNTY-
443 AM MST THU AUG 28 2008 /443 AM PDT THU AUG 28 2008/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST-CENTRAL
ARIZONA...EXTREME SOUTHWEST ARIZONA...EXTREME WEST-CENTRAL ARIZONA...
SOUTH-CENTRAL ARIZONA...SOUTHWEST ARIZONA...WEST-CENTRAL ARIZONA...
EXTREME SOUTHEAST CALIFORNIA AND SOUTHEAST CALIFORNIA.

.DAY ONE...TODAY AND TONIGHT

THERE IS A THREAT OF ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS
THROUGH TONIGHT. STORMS WILL BE MAINLY FOCUSED IN EAST CENTRAL
ARIZONA...SOUTH AND EAST OF PHOENIX. HOWEVER...THERE IS THE
POSSIBILITY THAT STORMS WILL MOVE INTO PHOENIX AND EVEN THE LOWER
DESERTS THIS EVENING. THE PRIMARY THREAT WILL BE DAMAGING WINDS IN
EXCESS OF 50 MPH AND HEAVY RAIN. LOCALLY HEAVY RAINFALL COULD LEAD
TO AREAS OF URBAN AND SMALL STREAM FLOODING WITH NORMALLY DRY WASHES
AND CREEKS RUNNING. RAIN WILL LIKELY IMPACT THE SAME AREAS THAT
RECEIVED RECENT HEAVY RAINFALL AND FLOODING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THERE WILL CONTINUE TO BE A CHANCE OF MAINLY AFTERNOON AND EVENING
SHOWERS AND THUNDERSTORMS ACROSS THE AREA...WITH THE BEST CHANCES
OVER THE HIGHER TERRAIN THROUGH FRIDAY. A STORM SYSTEM APPROACHING THE
REGION FROM THE PACIFIC NORTHWEST WILL INCREASE THUNDERSTORM CHANCES
ON SATURDAY AND SUNDAY. SOME OF THESE STORMS COULD BE CAPABLE OF
PRODUCING SIGNIFICANT SEVERE WEATHER. THERE IS ALSO A CHANCE FOR
THUNDERSTORMS MONDAY AND TUESDAY...THOUGH THESE WILL BE PRIMARILY
LOCATED OVER THE HIGHER TERRAIN NORTH AND EAST OF THE PHOENIX
METROPOLITAN AREA.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

In the hours before

Local storm report, Aug 28, 10:34 PM MST, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
1034 PM MST THU AUG 28 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1010 PM     TSTM WND GST     4 SSE PHOENIX           33.48N 112.05W
08/28/2008  M85 MPH          MARICOPA           AZ   AMATEUR RADIO

            MEASURED WIND GUST 16TH ST AND THOMAS

&&

WATERS

Local storm report, Aug 28, 10:44 PM MST, 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
1044 PM MST THU AUG 28 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1043 PM     TSTM WND DMG     5 N AVONDALE            33.49N 112.36W
08/28/2008                   MARICOPA           AZ   TRAINED SPOTTER

            2 FOOT DIAM TREE DOWN

&&

WATERS

Local storm report, Aug 28, 11:12 PM MST, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
1112 PM MST THU AUG 28 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1101 PM     HAIL             6 WSW FOUNTAIN HILLS    33.58N 111.84W
08/28/2008  E0.75 INCH       MARICOPA           AZ   TRAINED SPOTTER

            FRANK LLOYD WRIGHT AND SHEA

&&

WATERS

Local storm report, Aug 28, 11:14 PM MST, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
1114 PM MST THU AUG 28 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1105 PM     HAIL             3 S SCOTTSDALE          33.64N 111.86W
08/28/2008  E0.75 INCH       MARICOPA           AZ   TRAINED SPOTTER

            104ST AND BELL

&&

WATERS

Special weather statement, Aug 28, 11:20 PM MST, 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
1120 PM MST THU AUG 28 2008

AZZ025-026-290900-
YUMA/MARTINEZ LAKE AND VICINITY-SOUTHWEST DESERTS-
INCLUDING THE CITIES OF...FORTUNA FOOTHILLS...SAN LUIS...SOMERTON...
YUMA...DATELAND...TACNA...AND WELLTON
1120 PM MST THU AUG 28 2008

...STRONG THUNDERSTORMS MOVING INTO YUMA COUNTY...

NUMEROUS THUNDERSTORMS CAN BE EXPECTED OVER YUMA COUNTY THROUGH 200
AM THIS MORNING. THE STRONGEST STORMS WILL PRODUCE WIND GUSTS IN
EXCESS OF 70 MPH...LARGE HAIL...VERY HEAVY RAIN...AND BLOWING DUST.
MOTORISTS ON INTERSTATE 8 IN SOUTHWEST ARIZONA SHOULD BE PREPARED FOR
HIGH WINDS AND VISIBILITIES REDUCED TO ZERO. ALSO WATCH FOR FLOODING
OF NORMALLY DRY CREEKS AND WASHES.

STAY UP-TO-DATE ON THE LATEST FORECASTS BY LISTENING TO WEATHER
RADIO ON THE PUBLIC SERVICE BAND. MORE DETAILED INFORMATION IS
AVAILABLE FROM THE NATIONAL WEATHER SERVICE IN PHOENIX ON THE
INTERNET AT

WEATHER.GOV/PHOENIX

CAZ031-033-290900-
LOWER COLORADO RIVER VALLEY CA-IMPERIAL COUNTY-
INCLUDING THE CITIES OF...BLYTHE...BRAWLEY...CALEXICO...EL CENTRO...
GLAMIS...IMPERIAL...AND THE SALTON SEA
1120 PM PDT THU AUG 28 2008

...THUNDERSTORMS DEVELOPING OVER IMPERIAL COUNTY...

SCATTERED THUNDERSTORMS CAN BE EXPECTED OVER IMPERIAL COUNTY THROUGH
200 AM. THE STRONGEST STORMS WILL PRODUCE WIND GUSTS IN EXCESS OF 50
MPH...SMALL HAIL...VERY HEAVY RAIN...AND BLOWING DUST. MOTORISTS ON
INTERSTATE 8 IN SOUTHEAST CALIFORNIA SHOULD BE PREPARED FOR HIGH
WINDS AND VISIBILITIES REDUCED TO ZERO. ALSO WATCH FOR FLOODING OF
NORMALLY DRY CREEKS AND WASHES.

STAY UP-TO-DATE ON THE LATEST FORECASTS BY LISTENING TO WEATHER
RADIO ON THE PUBLIC SERVICE BAND. MORE DETAILED INFORMATION IS
AVAILABLE FROM THE NATIONAL WEATHER SERVICE IN PHOENIX ON THE
INTERNET AT

WEATHER.GOV/PHOENIX

Local storm report, Aug 28, 11:27 PM MST, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
1127 PM MST THU AUG 28 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1105 PM     HAIL             5 NNE PARADISE VALLEY   33.61N 111.93W
08/28/2008  E0.75 INCH       MARICOPA           AZ   TRAINED SPOTTER

            SCOTTSDALE AND THUNDERBIRD

&&

WATERS

The office that day

Everything else NWS Phoenix, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 28, 5:39 PM MST	Severe Thunderstorm Warning	PSR	Gila, Pinal	41 min
Aug 28, 5:40 PM MST	Areal Flood Advisory	PSR	Gila	2 hr
Aug 28, 6:06 PM MST	Flash Flood Warning	PSR	Gila	114 min
Aug 28, 8:11 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	49 min
Aug 28, 8:19 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	41 min
Aug 28, 8:37 PM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	113 min
Aug 28, 8:39 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	51 min
Aug 28, 8:46 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	59 min
Aug 28, 9:00 PM MST	Severe Thunderstorm Warning	PSR	Gila, Maricopa, Pinal	60 min
Aug 28, 9:23 PM MST	Flash Flood Warning	PSR	Maricopa, Pinal	119 min
Aug 28, 9:34 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	56 min
Aug 28, 9:39 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	51 min
Aug 28, 9:42 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	43 min
Aug 28, 9:49 PM MST	Areal Flood Advisory	PSR	Maricopa	3 hr
Aug 28, 10:06 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	44 min
Aug 28, 10:16 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	38 min
Aug 28, 10:19 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	56 min
Aug 28, 10:31 PM MST	Severe Thunderstorm Warning	PSR	Gila, Maricopa	29 min
Aug 28, 10:38 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	52 min
Aug 28, 10:46 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	44 min
Aug 28, 11:14 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	21 min
Aug 28, 11:27 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	63 min
Aug 28, 11:48 PM MST	Severe Thunderstorm Warning	PSR	Yuma	57 min
Aug 29, 12:00 AM MST	Dust Storm Warning	PSR		2 hr
Aug 29, 12:51 AM MST	Severe Thunderstorm Warning	PSR	Yuma	54 min
Aug 29, 1:11 AM MST	Areal Flood Advisory	PSR	Yuma	109 min
Aug 29, 1:11 AM MST	Severe Thunderstorm Warning	PSR	Yuma	35 min

Nearby

Flash Flood Warnings in Arizona, 2008 Every flash flood warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.