Alert archive / Arizona / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 22, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 13, 2002, 6:08 PM MST for Maricopa County, Arizona. It was in force for 52 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 13, 2002, 6:08 PM MST (01:08 UTC)
- Expired
- Jul 13, 2002, 7:00 PM MST
- In force
- 52 min
- Issued by
- NWS Phoenix, AZ
- Area
- Counties, with a storm outline in the text
County Maricopa County, AZ
The radar
The Phoenix radar (KIWA), 128 km from the middle of the area, began a volume at 01:08 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 13, 4:45 PM MST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Phoenix, AZ (KPSR), launched 00:00Z, 1.1 hours before the alert went out and 96 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
- 3809 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 2477 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.6
The text
As transmitted, in the capitals the NWS used until 2016.
239
WUUS55 KPSR 140108
SVRPSR
AZC013-140200-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
608 PM MST SAT JUL 13 2002
THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA
* UNTIL 700 PM MST
* AT 605 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED AN INTENSE THUNDERSTORM 5 MILES EAST-NORTHEAST OF
WICKENBURG...AND OTHER STRONG THUNDERSTORMS JUST NORTH OF THE
MARICOPA-YAVAPAI COUNTY LINE. INDIVIDUAL STORMS WERE MOVING TOWARD
THE SOUTHWEST AT 10 MPH.
LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...WICKENBURG
...AGUILA...STATE ROUTE 74...AND HIGHWAY 60.
DAMAGING MICROBURST WINDS...INTENSE LIGHTNING...AND LOCALLY HEAVY
RAIN IS POSSIBLE...ESPECIALLY WITH THE STORM APPROACHING WICKENBURG.
TAKE COVER IN A SUBSTANTIAL SHELTER UNTIL THE STORM PASSES.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN PHOENIX.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MST
SATURDAY EVENING FOR SOUTHERN ARIZONA AND SOUTHEAST CALIFORNIA.
LAT...LON 3401 11271 3401 11332 3377 11331 3375 11251
3392 11241What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 13, 3:20 PM MST, 2 hours 48 minutes earlier.
Area forecast discussion, Jul 13, 3:20 PM MST, 2 hours 48 minutes before
AZZ020>028-CAZ030>033-140545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 320 PM MST SAT JUL 13 2002 .SYNOPSIS... HIGH PRESSURE OVER UTAH AND ARIZONA TONIGHT...WILL SLOWLY MOVE TO THE SOUTH NEXT WEEK. A NORTHEAST WIND IN THE UPPER LEVELS...SHOULD MOVE AFTERNOON AND EVENING THUNDERSTORMS FROM THE HIGHER TERRAIN DOWN INTO THE SOUTH CENTRAL AND SOUTHWEST LOWER DESERTS EACH DAY. THE PRECIPITATION WILL BE LIGHT. HOWEVER...THE THUNDERSTORMS MAY HAVE GUSTY WINDS AND A CONSIDERABLE AMOUNT OF BLOWING DUST. .DISCUSSION... MID AFTN...STLT WV HAS A WELL DEFINED VORT LOBE ENTERING NE AZ... MOVG FAST TO THE SW...WITH PLENTY OF DYNAMICS WHICH SPAWNED DEEP CNVCTN. AS OF 22Z..THIS TSTM ACTIVITY IS JUST TO THE NE OF SRN GILA COUNTY AND NE OF THE USUAL AFTN RIM CNTRY TSTMS. KPG A WARY EYE ON THIS AS IT IS MOVG FAST TO THE SW AND CD BE A HARBINGER OF A BUSY EVE ACRS SRN GILA...MARICOPA AND NRN PINAL COUNTIES. THE LRG HI...CENTERED PRETTY MUCH OVER CNTRL UT...IS PROGGED TO SLOWLY SINK SOUTH...WHATS MOST IMPORTANT IS THAT THERE IS A SERIES OF VORT LOBES...WITH GOOD OMEGA MAXES...SWINGING ARND THE HI AND INTO CNTRL AZ OVER THE NEXT 3 DAYS. WHILE THE TYPICAL MONSOON LOW LVL MSTR SOURCE TO THE S JUST HASNT HAPPENED YET...THE UPPR LVL DYNAMICS ARE PRETTY IMPRESSIVE. SO WILL CONT TO RAMP UP THE ACTVTY THROUGH TUESDAY...ALBEIT THE ACTUAL RAINFALL AMOUNTS WILL BE UNMERCIFULLY LOW. WILL GO WITH THE HI DRFTG OFF TO THE E THE MIDDLE OF NEXT WEEK...AND A TROUGH DIGGING SWRD ALG THE CA COAST...THIS CD MEAN SOME DRYING...BUT RELATIVELY SPEAKING WE ARE ALREADY A DRY IN THE MID LVLS. WHAT IS PBLY MORE IMPORTANT IS THAT THE TROUGH CD MAKE FOR SLIGHTLY COOLER TEMPS...MAYBE 2 TO 4 DEG BELOW DAILY SEASONAL NORMS BY THE END OF NEXT WEEK AS WELL AS KICKING IN SOME VERY LO LVL MSTR ADVCTN. RUNYAN .PSR...NONE.
Nearby
Severe Thunderstorm Warnings in Arizona, 2002Every severe thunderstorm warning in 2002
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.