Alert archive / Nevada / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 20, NWS Elko, NV

August 22, 2003Elko County, Nevada

NWS Elko, NV issued this severe thunderstorm warning at Aug 22, 2003, 12:49 PM PDT for Elko County, Nevada. It was in force for 26 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: Aug 22, 2003, 12:49 PM PDT (19:49 UTC)
Expired: Aug 22, 2003, 1:15 PM PDT
In force: 26 min
Issued by: NWS Elko, NV
Area: Counties, with a storm outline in the text

County Elko County, NV

The radar

The Salt Lake City radar (KMTX), 176 km from the middle of the area, began a volume at 19:50 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 nearest sounding before it

Elko, NV (KLKN), launched 12:00Z, 7.8 hours before the alert went out and 24 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 102 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 797 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS55 KLKN 221949
SVRLKN
NVC007-222015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ELKO NV
1248 PM PDT FRI AUG 22 2003

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL ELKO COUNTY IN NEVADA
  THIS INCLUDES THE PEQUOP SUMMIT AND THE COMMUNITY OF OASIS

* UNTIL 115 PM PDT

* AT 1245 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 12 MILES SOUTH OF OASIS...MOVING NORTH AT 30 
   MPH. HALF INCH TO ONE INCH HAIL AND WIND GUSTS NEAR 60 MPH CAN BE 
   EXPECTED WITH THIS THUNDERSTORM.

* THE SEVERE THUNDERSTORM WILL BE...
  OVER OASIS AT 105 PM PDT
  4 MILES EAST OF PEQUOP SUMMIT AT 115 PM PDT

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE.

LAT...LON 4073 11455 4074 11445 4109 11426 4113 11463

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 Aug 22, 8:51 AM PDT, 3 hours 58 minutes earlier.

Area forecast discussion, Aug 22, 8:51 AM PDT, 3 hours 58 minutes before

NORTHERN GREAT BASIN FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ELKO NV
851 AM PDT FRI AUG 22 2003

ACTIVE WEATHER DAY TODAY. WATER VAPOR IMAGERY SHOWING LOW OFF THE
CENTRAL CALIFORNIA COAST STARTING TO MOVE INLAND NEAR SFO. DRY AIR
MOVING INTO SOUTHERN NEVADA...BUT STILL DEEP OVER NORTHERN PORTIONS
OF THE STATE. 12Z LKN SOUNDING SHOWS LIS OF NEG 4.5 WITH SOME DRYING
ALOFT NEAR 20K FT. SO...BOTH MODELS ARE UNDERESTIMATING THE
INSTABILITY OVER THE AREA. CONVERGENCE ZONE SET UP CURRENTLY SET UP
OVER NORTH CENTRAL ELKO...SOUTHWEST TO NORTHERN LANDER COUNTY. ETA
KEEPS THIS BOUNDARY IN THE SAME GENERAL LOCATION FOR MOST OF THE
MORNING AND AFTERNOON AND THEN SLOWLY EASTWARD THIS EVENING UNTIL
ABOUT 12Z SATURDAY MORNING. JET ASSOCIATED WITH CALIFORNIA LOW STARTS
MAKING ITS WAY INTO OUR FORECAST AREA THIS AFTERNOON. ALL THIS
SUPPORTS OUR CURRENT FORECAST OF HEAVY PRECIPITATION AND SOME SEVERE
THUNDERSTORMS. MOST OF THE SEVERE THUNDERSTORMS SHOULD BE
CONCENTRATED ALONG THE CONVERGENCE BOUNDARY...AGAIN ALONG A LINE
FROM ROUGHLY JACKPOT SOUTHWEST TO MAYBE BATTLE MOUNTAIN. DRY AIR
INTRUSION THIS AFTERNOON WILL ONLY ENHANCE HAIL FORMATION. ZONE
FINALLY MOVES UP INTO EASTERN IDAHO TOMORROW MORNING WITH RAPID
DRYING. ONLY DISAGREEMENT WITH CURRENTLY PACKAGE IS THE BREEZY
WORDING IN THE FIRST PERIOD ACROSS THE NORTH. MOS GUIDANCE KEEPS
WINDS AROUND 10KTS OVER WMC AND EKO. SO WILL PROBABLY AMEND NORTHERN
ZONES TO DROP BREEZY WORDING. OTHERWISE MORNING PACKAGE LOOKS RIGHT
ON.

.EKO...NVZ030>037 FLASH FLOOD WATCH TODAY.

CLAYCOMB

Hazardous weather outlook, Aug 22, 5:00 AM PDT, 7 hours 49 minutes before

NVZ030>037-231400-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ELKO NV
500 AM PDT FRI AUG 22 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND EAST CENTRAL
NEVADA

.DAY ONE...

MOISTURE COMBINED WITH STRONG WINDS IN THE UPPER LEVELS OF THE
ATMOSPHERE WILL CREATE FAVORABLE CONDITIONS FOR THUNDERSTORMS CAPABLE
OF PRODUCING HEAVY RAINS...STRONG WINDS...AND LARGE HAIL. A FLASH
FLOOD WATCH CONTINUES FOR NORTHEAST NEVADA TODAY. REFER TO AWIPS ID
RNOFFALKN...OR WMO HEADER WGUS65 KLKN FOR DETAILS.

.DAYS TWO THROUGH SEVEN...

MOISTURE WILL DEPART NORTHEAST NEVADA SATURDAY...WITH THE THREAT OF
SHOWERS AND THUNDERSTORMS DIMINISHING.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

ALLEN

In the hours before

Local storm report, Aug 22, 9:00 AM PDT, 3 hours 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ELKO, NV
900 AM PDT FRI AUG 22 2003

TIME(PDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1207 PM    8 W ELKO                  NV   FLASH FLOODS
08/21/03   ELKO                           FLASH FLOODING AND
                                          MUDSLIDE CLOSED PORTIONS OF
                                          INTERSTATE 80 NEAR HUNTER
                                          EXIT, MILE MARKER 293.

0208 PM    CARLIN                    NV   FLASH FLOODS
08/21/03   EUREKA

PE

The office that day

Everything else NWS Elko, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 21, 8:28 PM PDT	Flash Flood Warning	LKN	Elko, Eureka	4 hr
Aug 22, 1:05 PM PDT	Severe Thunderstorm Warning	LKN	Humboldt	55 min
Aug 22, 1:07 PM PDT	Severe Thunderstorm Warning	LKN	Lander	53 min
Aug 22, 2:01 PM PDT	Severe Thunderstorm Warning	LKN	Lander	44 min
Aug 22, 2:07 PM PDT	Severe Thunderstorm Warning	LKN	Humboldt	53 min
Aug 22, 2:44 PM PDT	Severe Thunderstorm Warning	LKN	Eureka	31 min
Aug 22, 3:02 PM PDT	Severe Thunderstorm Warning	LKN	Elko	58 min
Aug 22, 3:48 PM PDT	Severe Thunderstorm Warning	LKN	Elko	42 min
Aug 22, 4:11 PM PDT	Severe Thunderstorm Warning	LKN	Lander	34 min

Nearby

Severe Thunderstorm Warnings in Nevada, 2003 Every severe thunderstorm warning in 2003

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.