Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 66, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Sep 2, 1997, 2:29 PM MST for Mohave County, Arizona. It was in force for 61 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 2, 1997, 2:29 PM MST (21:29 UTC)
- Expired
- Sep 2, 1997, 3:30 PM MST
- In force
- 61 min
- Issued by
- NWS Las Vegas, NV
- Area
- Whole counties
County Mohave County, AZ
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 2, 3:14 PM MST | Hail 0.75 | Kingman, AZ | Dime-sized hail and winds up to 51 mph were observed by a storm spotter. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.5 hours before the alert went out and 185 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
- 83 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 1271 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLAS 022130 RRA SVRLAS AZC015-022230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 229 PM PDT (229 PM MST) TUE SEP 2 1997 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 330 PM PDT (330 PM MST) FOR PEOPLE IN THE FOLLOWING LOCATIONS...... IN NORTHWEST ARIZONA ...CENTRAL MOHAVE COUNTY AT 225 PM...LAS VEGAS DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR HUALAPAI PEAK ABOUT 15 MILES SOUTHEAST OF KINGMAN. MOVEMENT OF THE STORM WAS TO THE NORTHWEST AT 5 TO 10 MPH AND WILL LIKELY AFFECT THE CITY OF KINGMAN DURING THE NEXT HOUR. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. KOSIER
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 Las Vegas, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 2, 2:07 PM MST, 22 minutes earlier.
Area forecast discussion, Sep 2, 2:07 PM MST, 22 minutes before
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 205 PM PDT TUE SEP 2 1997 RADAR AND STLT BOTH INDICATE MOST OF FCST AREA CONVECTION-FREE WITH EXCEPTION OF ERN SLOPES OF SIERRA NEVADA. SEVERAL FACTORS LIKELY INHIBITING T-STORM DEVELOPMENT THIS AFTERNOON. TEMPS AT 21Z STILL ONLY IN LOWER 80S OVER SRN NV WHICH IS STILL WELL BELOW CONVECTIVE TEMPS. RAINFALL FROM LAST NIGHT ALSO LIKELY STABILIZED LOWER LAYERS TO SOME DEGREE AND CAPPING INVERSION AT 6OO MB ALSO A FACTOR. WITH ALL THAT SAID...WILL TRIM PRECIP CHANCE A CATEGORY OR TWO FOR TONIGHT INTO ISOLD OR SCT. ALL MDLS SHOW LITTLE CHG FOR THE NEXT FEW DAYS WITH FCST AREA REMAINING UNDER A MOIST SOUTHEAST FLOW WITH UNSTBL CONDS CONTINUING WITH FCST LI VALUES IN THE 0 TO -2 CATEGORY. THEREFORE...WILL CONTINUE BROAD-BRUSH APPROACH WITH SCT POPS FOR MOST AREAS THROUGH THU. LONGER RANGE MDLS CONTINUE TO BRING TROUGH ALONG WEST COAST OVER THE WEEKEND WHICH SHOULD BRING A DRIER SOUTHWEST FLOW THEREBY CUTTING OFF T-STORMS CHANCES. LAS 2332. KOSIER SRN NV...NONE ERN CA...NONE NW AZ ...NONE
In the hours before
Local storm report, Sep 2, 8:45 AM MST, 5 hours 44 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED TWENTYNINE PALMS..
NATIONAL WEATHER SERVICE LAS VEGAS NEVADA
840 AM PDT TUE SEP 2 1997
TIME(PDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0115 PM TRUXTON AZ FLOODING
09/01/97 MOHAVE HEAVY RAIN CAUSED AREA
ARROYOS AND WASHES TO
FILL
0145 PM HUALAPAI MTN. AZ FLOODING
09/01/97 MOHAVE HUALAPAI MTN. RANGER
STATION REPORT 1/4"HAIL,
WITH NORMALLY DRY WASHES
RUNNING WITH 6"-1 FEET
OF WATER.
0204 PM TWENTYNINE PALMS CA WIND DAMAGE
09/01/97 SAN BERNARDINO AT 29 PALMS AIRPORT;
SEVERAL WIND GUSTS UP TO
63 MPH AND NEARLY .40 INCH
OF RAIN IN PAST HOUR.
0228 PM TWENTYNINE PALMS CA FLOODING
09/01/97 SAN BERNARDINO FROM CA OES; FLASH
FLOODING AND VERY HEAVY
RAIN ALONG S.R. 62 NEAR 29
0257 PM TWENTYNINE PALMS CA WIND DAMAGE
09/01/97 SAN BERNARDINO AT 29 PALMS AIRPORT; WIND
GUSTS TO 86 MPH.
0320 PM TWENTYNINE PALMS CA WIND DAMAGE
09/01/97 SAN BERNARDINO AT 29 PALMS AIRPORT; THREE
WIND GUSTS 90 KNOTS, .35
INCH OF RAIN IN PAST HOUR,
HAIL 1/4 - 1/2 INCH IN
DIAMETER.
0450 PM TWENTYNINE PALMS CA FLOODING
09/01/97 SAN BERNARDINO CHP REPORTS; S.R.62 CLOSED
BY INTERSECTION OF S.R 62
& GODWIN RD. VEHICLES WASHED
OFF THE ROAD WITH MUDSLIDES
MUDSLIDES HAVING OCCURRED.The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 3:25 PM MST | Flash Flood Warning | VEF | Mohave | 110 min |
| Sep 2, 3:25 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 110 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 1997Every severe thunderstorm warning in 1997
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.