Alert archive / California / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 93, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Sep 14, 1997, 4:43 PM PDT for San Bernardino County, California; Mohave County, Arizona. It was in force for 62 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 14, 1997, 4:43 PM PDT (23:43 UTC)
- Expired
- Sep 14, 1997, 5:45 PM PDT
- In force
- 62 min
- Issued by
- NWS Las Vegas, NV
- Area
- Whole counties
Counties Mohave County, AZ, San Bernardino County, CA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 14, 5:30 PM PDT | Thunderstorm Wind | Lake Havasu City, AZ | A Skywarn Spotter in Lake Havasu City reported thunderstorm winds had downed a few power lines and some trees. |
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
Mercury/Desert R, NV (KDRA), launched 12:00Z, 11.7 hours before the alert went out and 176 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3608 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLAS 142346 RRA SVRLAS AZC015-CAC071-150045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 443 PM PDT (443 PM MST) SUN SEP 14 1997 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 545 PM PDT (545 PM MST) FOR PEOPLE IN THE FOLLOWING LOCATIONS...S... IN NORTHWEST ARIZONA ...EXTREME SOUTHWESTERN MOHAVE COUNTY...INCLUDING LAKE HAVASU CITY IN EAST CALIFORNIA ...EXTREME SOUTHEASTERN SAN BERNARDINO COUNTY AT 440 PM...LAS VEGAS DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER EXTREME SOUTHEAST SAN BERNARDINO COUNTY IN CALIFORNIA ABOUT 20 MILES SOUTHWEST OF LAKE HAVASU CITY OR 5 MILES NORTH OF VIDAL JUNCTION. MOVEMENT OF THIS STORM WAS TO THE NORTHEAST AT 15 TO 20 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO A"N INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. 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 14, 2:06 PM PDT, 2 hours 37 minutes earlier.
Area forecast discussion, Sep 14, 2:06 PM PDT, 2 hours 37 minutes before
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 200 PM PDT SUN SEP 14 1997 STLT/88D DETECTING SHWRS/ISOLD TSTMS XTNDDG FRM ERN CA NE INTO SW UT AT 2030Z. MDLS VRY SIMILAR IN THE OVRALL LARGE SCALE FEATURES THRU THE SHORT TERM PERIOD. LOW LVL MSTR AN INDIRECT EFFECT FM HRCN LINDA HAS PRODUCED A MSTR SURGE INTO SE CA DSRTS WITH DWPTS AT 20Z IN THE LOW TO MID 70S IN SE CA AND THE 50S/60 AS FAR N AS SW UT. A VRY SHARP GRADIENT EXISTS BASICALLY ON A LINE FRM DAG-DRA- P38. MDLS SIMILAR KEEPING THIS VRY JUICY AIRMASS OVR THE ERN HALF OF FA TNGT AND MOST OF MON BEFORE DRIER AIR STARTS TO PUNCH INTO SRN NV LATE MON AFTN AS TROF WEAKENS AND MOVS ACRS NRN NV. THE MSTR IS THEN SUPPRESS S AND E MON NGT AND TUE...BUT STILL APRS ENUF LOW LVL MSTR LINGERING OVR NW AZ TUE FOR SLGT THREAT OF MTN TSTMS. WINDS TO ADV LVLS IN S CNTRL NV AND WILL CONT WAD UNTIL 04Z. APRS LESS WND MON BUT STILL BREEZY OR LCLY WNDY AS TROF MOVS ACRS GRT BASIN. TROF LACKING ANY SIGNIFICANT MSTR BUT WILL INCLUDE A SLGT CHC OF SHWRS OVR THE MTNS OVR CNTRL NV. THE THREAT OF TSTMS STILL POSSIBLE IN THE XNTDD. SIMILAR TO THE LAST TROF PASSAGE TO OUR N SRN NV DRIED OUT WHILE LOW LVL MSTR LINGERED OVR AZ. ANOTHER TROF WILL DROP S INTO OR/WA LATER IN THE WEEK. ANY BACKING OF THE LOW LVL WNDS WILL PULL MSTR BACK W-NW INTO SRN NV/ERN CA. FOR NOW WILL MENTION THREAT ALL THREE DAYS. LAS 2200. PIERCE SRN NV...WIND ADVISORY NV ZONES 13/14 TIL 04Z. ERN CA...NONE NW AZ ...NONE
In the hours before
Special weather statement, Sep 14, 11:39 AM PDT, 5 hours 4 minutes before
AZZ001>003-031-CAZ027>029-NVZ015>022-150000- SPECIAL WEATHER STATEMENT...UPDATED NATIONAL WEATHER SERVICE LAS VEGAS NV 1135 AM PDT (1130 AM MST) SUN SEP 14 1997 ...POTENTIAL IMPACT FROM REMNANTS OF HURRICANE LINDA DECREASING AS IT CONTINUES TO WEAKEN AND MOVE AWAY FROM SOUTHERN CALIFORNIA... AT 8 AM PDT (8 AM MST) SUNDAY...HURRICANE LINDA WAS CENTERED NEAR 21.9 DEGREES NORTH LATITUDE...119.5 WEST LONGITUDE OR ABOUT 620 MILES WEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. MAXIMUM SUSTAINED WINDS HAD DECREASED TO 105 MPH...WITH HIGHER GUSTS...AND GRADUAL WEAKENING IS LIKELY TO CONTINUE TODAY. LINDA WAS MOVING TOWARD THE WEST NORTHWEST AT 13 MPH AND THIS GENERAL MOTION IS EXPECTED THROUGH TONIGHT. SINCE LATE SATURDAY...SATELLITE IMAGERY HAS SHOWN LINDA TO BE MOVING ON A MORE WESTWARD TRACK...TAKING IT AWAY FROM THE BAJA COAST AND FARTHER OUT INTO THE PACIFIC OCEAN. THIS MOTION SIGNIFICANTLY DECREASES THE CHANCE FOR THE REMNANTS OF LINDA TO MOVE INTO THE DESERT SOUTHWEST. SINCE THE THREAT OF HEAVY RAIN LATER THIS WEEK FROM THE REMNANTS OF LINDA HAS DIMINISHED...THIS WILL BE THE LAST REGULAR STATEMENT CONCERNING HURRICANE LINDA ISSUED BY THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN LAS VEGAS. B. FUIS
Local storm report, Sep 14, 2:29 PM PDT, 2 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NEVADA
129 PM PST SUN SEP 14 1997
TIME(PST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0530 PM BULLHEAD CITY AZ WIND DAMAGE
09/14/97 MOHAVE TREES AND POWER LINES
DOWN SEVERAL MOBILE HOMES
DAMAGED. MINOR FLOODING
AND THREE TELEPHONE POLES
SNAPPED.
0630 PM SEARCHLIGHT NV .5 INCH HAIL
09/14/97 CLARK MARBLE SIZED HAIL AND
0.70 OF AND INCH OF RAIN.Nearby
Severe Thunderstorm Warnings in California, 1997Severe 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.