Alert archive / Nevada / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 18, NWS Elko, NV
NWS Elko, NV issued this severe thunderstorm warning at Jul 25, 2002, 12:23 PM PDT for Eureka County, White Pine County, Nevada. It was in force for 22 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 25, 2002, 12:23 PM PDT (19:23 UTC)
- Expired
- Jul 25, 2002, 12:45 PM PDT
- In force
- 22 min
- Issued by
- NWS Elko, NV
- Area
- Counties, with a storm outline in the text
Counties Eureka County, NV, White Pine County, NV
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 nearest sounding before it
Reno, NV (KREV), launched 12:00Z, 7.4 hours before the alert went out and 209 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
- 3904 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
156 WUUS55 KLKN 251923 SVRLKN NVC011-033-251945- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ELKO NV 1217 PM PDT THU JUL 25 2002 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN EUREKA COUNTY IN NEVADA WEST CENTRAL WHITE PINE COUNTY IN NEVADA * UNTIL 1245 PM PDT * AT 1214 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER SOUTHEASTERN EUREKA COUNTY...OR ABOUT 18 MILES SOUTH OF EUREKA...MOVING EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... PANCAKE SUMMIT ON HIGHWAY 50 IN WHITE PINE COUNTY AT 1240 PM PDT LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM AS WELL AS WIND GUSTS TO 60 MPH. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER. INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. LAT...LON 3927 11613 3914 11596 3918 11530 3960 11545
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 Elko, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 25, 9:38 AM PDT, 2 hours 45 minutes earlier.
Area forecast discussion, Jul 25, 9:38 AM PDT, 2 hours 45 minutes before
NORTHERN GREAT BASIN FORECAST DISCUSSION NATIONAL WEATHER SERVICE ELKO NV 938 AM PDT THU JUL 25 2002 .DISCUSSION...SURFACE OBS ACROSS NV EARLY THIS MORNING SHOW A STRONG DEWPOINT DISCONTINUITY RUNNING FROM CENTRAL NV NEAR AUSTIN NORTH-NORTHEASTWARD ACROSS EXTREME EASTERN HUMBOLDT COUNTY. DEWPOINTS TO THE EAST OF THIS LINE ARE IN THE UPPER 40S TO MID 50S... WHILE TO THE WEST THERE ARE DEWPOINTS IN THE UPPER 20S TO UPPER 30S. KEY TO THE AFTERNOON AND EVENING FORECAST WILL BE HOW QUICKLY THIS MOISTURE IN THE EAST IS SCOURED OUT BY THE TROUGH WHICH WILL MOVE ACROSS NORTHERN NV LATER TODAY. LEFT FRONT ENTRANCE OF A 60 TO 65 KNOT JET CURRENTLY PRODUCING SOME WEAK CONVECTION IN NORTHERN CHURCHILL AND EXTREME SOUTHERN PERSHING AND IT IS PROGGED TO PROGRESS EASTWARD INTO WHITE PINE COUNTY AND WEST-CENTRAL UT THIS AFTERNOON AND EVENING. 06Z META SHOWED HIGHEST CAPES THIS AFTERNOON AND EVENING IN A REGION FROM WHITE PINE COUNTY EASTWARD ACROSS NORTH- CENTRAL UT. 7H THETA-E GRADIENT MOVES QUICKLY FROM WEST TO EAST THIS AFTERNOON...AS 7H THETA-E TROUGH PUNCHES ACROSS HUMBOLDT COUNTY INTO WESTERN ELKO COUNTY THIS AFTERNOON. LOOKS LIKE THE BEST CHANCE FOR CONVECTION WILL BE ACROSS WHITE PIN AND ELKO COUNTY EAST OF THE RUBY MOUNTAINS...WHERE THE HIGHEST CAPE AND STRONGEST 7H THETA-E GRADIENT WILL LIE. COMPLICATING THINGS SOMEWHAT IS A VORTMAX WHICH WILL SWING ACROSS EXTREME NORTHERN NV THIS AFTERNOON AND EARLY EVENING. HAVE KEPT HIGH ISOLATED POPS IN NORTHERN ELKO COUNTY FOR THIS AFTERNOON AND EVENING AND LOWER ISOLATED ACROSS ELKO COUNTY TO THE WEST OF THE RUBIES. LOOKS LIKE CONVECTION WILL HOLD ON IN THE EASTERN QUARTER OF THE CWFA THIS EVENING...BUT AS THE TROUGH MOVES RAPIDLY TO THE EAST AND THE JET FORCING MOVES EAST WITH IT... THUNDERSTORMS SHOULD HAVE MOVED OFF INTO UT BY LATE EVENING. ELKO 12Z SOUNDING SHOWED PW NEAR .75 OF AN INCH AND GOES SOUNDING DATA SHOWED PWS NEAR 1.00 INCHES ACROSS SOUTHERN WHITE PINE COUNTY...SO WE HAVE GOOD MOISTURE TO WORK WITH THIS AFTERNOON. THE DRY SLOT WORKING THROUGH WESTERN NV AT THIS TIME...RENO 12Z SOUNDING SHOWED ONLY 0.18 OF AN INCH PW WILL LEAD TO RAPID CLEARING FROM EAST TO WEST ACROSS THE EASTERN HALF OF THE CWFA LATE THIS AFTERNOON AND EVENING. TONIGHT LOOKS DRY AND COOL WITH A LIGHT NORTHWESTERLY WIND. REST OF THE ZONE FORECAST LOOKS DRY...BUT WILL HAVE TO WATCH THE REMNANTS OF TROPICAL STORM DOUGLAS FOR MOISTURE ENTRAINMENT LATE IN THE FORECAST PERIOD. UPDATED ZONE 30 FROM PARTLY CLOUDY TO MOSTLY SUNNY WITH DRY AIR PUSHING INTO WESTERN NV. UPDATED ZONE 31 TO REDUCE POPS FROM SCATTERED TO ISOLATED FOR THIS AFTERNOON AND EVENING. UPDATED ZONE 37 TO INCREASE THE SPOT POP FOR EUREKA FROM 10 TO 20 PERCENT...DUE TO THE PROXIMITY OF EUREKA TO THE MOISTURE GRADIENT MAX AND THE 7H THETA-E GRADIENT MAX THIS AFTERNOON. .EKO...NONE. SMITH
The office that day
Everything else NWS Elko, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 5:10 PM PDT | Flash Flood Warning | LKN | Eureka | 50 min |
| Jul 24, 6:08 PM PDT | Flash Flood Warning | LKN | Eureka | 3 hr |
| Jul 25, 1:27 PM PDT | Severe Thunderstorm Warning | LKN | White Pine | 48 min |
| Jul 25, 2:15 PM PDT | Flash Flood Warning | LKN | White Pine | 3 hr |
| Jul 25, 2:31 PM PDT | Severe Thunderstorm Warning | LKN | White Pine | 59 min |
| Jul 25, 2:41 PM PDT | Severe Thunderstorm Warning | LKN | Elko | 34 min |
Nearby
Severe Thunderstorm Warnings in Nevada, 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.