Alert archive / Colorado / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 24, NWS Grand Junction, CO
NWS Grand Junction, CO issued this severe thunderstorm warning at Jul 17, 2000, 8:08 PM MDT for Eagle County, Colorado. It was in force for 52 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
- Jul 17, 2000, 8:08 PM MDT (02:08 UTC)
- Expired
- Jul 17, 2000, 9:00 PM MDT
- In force
- 52 min
- Issued by
- NWS Grand Junction, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Eagle County, CO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 17, 8:24 PM MDT | Thunderstorm Wind 60 E | Gypsum, CO |
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
Denver, CO (KDNR), launched 00:00Z, 2.1 hours before the alert went out and 297 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
- 366 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 977 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -72 m²/s²
- 0-3 km storm-relative helicity
- -61 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -1.6
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Grand Junction, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 17, 2:04 PM MDT, 6 hours 4 minutes earlier.
Area forecast discussion, Jul 17, 2:04 PM MDT, 6 hours 4 minutes before
WESTERN COLORADO & EASTERN UTAH AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 204 PM MDT MON JUL 17 2000 SHOWERS AND A FEW THUNDERSTORMS THIS MORNING CORRELATED WITH ETA 500-300 MB OMEGA AND 300-200 MB LYR POTENTIAL VORT LOBE...WHICH IS MOVING OFF TO THE NE. DRYLINE ON WVPR STLT CROSSING FORECAST AREA (FA) THIS AFTERNOON WITH WITH A FEW GOOD TSTMS AHEAD OF IT AND THEN RATHER SHARP DRYING AND APPARENT LOSS OF LIFT BEHIND IT. A FEW STORMS OVER THE WASATCH AND ABAJO MTNS AT 20Z IN DRIER AREA...BUT NOT MUCH ON VIS STLT ATTM. HOWEVER...CAPE AND THETA-E GRADIENT PROGGED OVER FA AT 00Z TUE...AND MAY BE ENOUGH SUNSHINE THIS AFTERNOON FOR TSTMS TO OVERCOME SUBSIDENCE...SO HESITATE TO PULL TSTMS FROM CURRENT FORECAST BUT WILL GO WITH QUICK END TO ACTIVITY IN MOST AREAS THIS EVENING WITH LOSS OF HEATING. VORT CENTER OVER SRN CA THIS MORNING PROGGED INTO NW AND N UTAH TONIGHT KEEPING MOST LIFT TO OUR NORTHWEST. NOT SURE IF MODELS HAVE GOOD HANDLE ON VORT CTRS...THOUGH...AND WILL KEEP A BIT MORE CLOUDS NORTH TONIGHT. MOISTURE PLUME MOVING INTO BAJA/SRN CA/WRN AZ MAINLY HIGH LEVEL. FOR TUESDAY AND WEDNESDAY...THE RIDGE CENTER ESTABLISHES ITSELF OVER NM AND TX WITH DRIER SW FLOW ACROSS EASTERN UTAH AND WESTERN COLORADO. COOLER AIR ALOFT AND WEAK JET PROGGED ACROSS MUCH OF THE NORTHERN ZONES TUESDAY WEAKENS MORE BY WEDNESDAY. RIPPLES IN FLOW AND DIFFERENTIAL HEATING SHOULD BE ENOUGH FOR SLIGHT CHANCE OF AFTERNOON/EVENING SHOWERS AND TSTMS IN RESIDUAL MOISTURE FOR TUESDAY...AND WILL KEEP SOME MENTION IN THE MOUNTAINS FOR WEDNESDAY. IN THE EXTENDED...BROAD FLAT RIDGE FORECAST ALONG THE SOUTHERN-TIER STATES WILL FAVOR A DRIER W-SW FLOW ACROSS EASTERN UTAH AND WESTERN COLORADO. WILL KEEP CURRENT WORDING OF SLIGHT CHANCE OF AFTERNOON/EVENING THUNDERSTORMS OVER THE MOUNTAINS MAINLY FROM DIFFERENTIAL HEATING. RIDGE EXPECTED TO REBOUND THIS WEEKEND THAT COULD FORETELL `THE NEXT MONSOONAL SURGE OF MOISTURE INTO THE AREA SUNDAY AND EARLY NEXT WEEK. .GJT...NONE. JAD
The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 8:48 PM MDT | Severe Thunderstorm Warning | GJT | Pitkin | 42 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2000Every severe thunderstorm warning in 2000
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.