Alert archive / Arizona / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 52, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Aug 5, 2001, 4:10 PM MST for Gila County, Arizona. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 5, 2001, 4:10 PM MST (23:10 UTC)
- Expired
- Aug 5, 2001, 4:45 PM MST
- In force
- 35 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Gila County, AZ
The radar
The Flagstaff radar (KFSX), 59 km from the middle of the area, began a volume at 23:10 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
Phoenix, AZ (KPSR), launched 12:00Z, 11.2 hours before the alert went out and 102 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
- 113 J/kg
- Mixed-layer CIN
- -410 J/kg
- Mixed-layer LCL
- 1788 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KFGZ 052312 SVRFLG AZC007-052345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 410 PM MST SUN AUG 5 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL GILA COUNTY IN ARIZONA THIS INCLUDES THE CITIES OF...RYE...JAKES CORNER * UNTIL 445 PM MST * AT 410 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 11 MILES EAST OF JAKES CORNER...MOVING WEST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT OR PASS CLOSE TO... OVER JAKES CORNER AT 440 PM MST 7 MILES SOUTH OF RYE AT 440 PM MST ONE INCH DIAMETER HAIL AND WIND GUSTS OVER 60 MPH ARE LIKELY WITH THIS STORM. IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 58 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. LAT...LON 3396 11104 3414 11107 3411 11145 3395 11 141 $$ JJ
What 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 Flagstaff, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 5, 3:00 PM MST, 1 hour 10 minutes earlier.
Area forecast discussion, Aug 5, 3:00 PM MST, 1 hour 10 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 300 PM MST SUN AUG 05 2001 .SYNOPSIS...A RIDGE OF HIGH PRESSURE WILL REMAIN OVER MUCH OF THE SOUTHWEST THIS WEEK. THIS WILL ALLOW MONSOONAL MOISTURE TO CONTINUE TO FLOW ACROSS THE STATE BRINGING A CHANCE OF SHOWERS AND THUNDERSTORMS EACH DAY. A SURGE OF MOISTURE WILL MOVE ACROSS THE STATE ON TUESDAY AND WEDNESDAY INCREASING THE LIKELIHOOD OF PRECIPITATION OVER THE NORTHLAND. .DISCUSSION...WV IMAGERY SHOWS A CIRCULATION CENTER MOVING ACROSS THE STATE TODAY WITH THE CENTER LOCATED OVER OUR SOUTHERN ZONES. CONVECTIVE ACTIVITY WAS SLOW TO START TODAY ALLOWING MORE INSOLATION THAN WAS PRESENT YESTERDAY. CURRENT CONVECTION IS PRIMARILY LOCATED ALONG THE NORTHERN EDGE OF THE CIRCULATION WHERE THE MID/UPPER TROP FLOW HAS LIKELY INCREASED. THIS INCREASED FLOW HAS ALLOWED A FEW STORMS TO BECOME STRONG WITH SOME SMALL HAIL AND GUSTY WINDS. THESE THUNDERSTORMS WILL SLOWLY MOVE SWWD OFF THE RIM AND INTO THE DESERTS LATE THIS AFTERNOON AND EVENING. WILL KEEP POPS UP A BIT HIGHER OVER THESE ZONES FOR TONIGHT. A STRONG RIDGE OF HIGH PRESSURE REMAINS OVER MUCH OF THE CONUS TODAY AND WILL CONTINUE INTO MID WEEK. THIS PATTERN WILL CONTINUE TO DRAW MOISTURE ACROSS THE STATE WITH CONVECTIVE ACTIVITY CONTINUING EACH DAY. A STRONG EASTERLY WAVE WILL MOVE ACROSS THE REGION ON TUESDAY AND WEDNESDAY AND CONVECTIVE ACTIVITY WILL BE ON THE INCREASE STATEWIDE. FOR NOW HAVE GONE WITH CHANCE POPS ON TUESDAY AND LIKELY POPS ON WEDNESDAY. ACTIVITY BEGINS TO DECLINE AFTER PASSAGE OF THE WAVE AND THE RIDGE SETS UP OVER THE DESERT SOUTHWEST. THIS SHOULD CREATE STRONG WARMING ALOFT AND A MO~RE NORTHERLY FLOW SO THAT THE COMBINATION OF SUBSIDENCE AND DRIER TRAJECTORIES WILL REDUCE POPS. DB .FGZ...NONE.
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 3:02 PM MST | Severe Thunderstorm Warning | FGZ | Gila | 38 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2001Every severe thunderstorm warning in 2001
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.