Alert archive / Colorado / Flash Flood Warnings in 2000
Flash Flood Warning 1, NWS Grand Junction, CO
NWS Grand Junction, CO issued this flash flood warning at Feb 18, 2000, 8:27 AM MST for Mesa County, Colorado. It was in force for 3 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 18, 2000, 8:27 AM MST (15:27 UTC)
- Expired
- Feb 18, 2000, 8:30 AM MST
- In force
- 3 min
- Issued by
- NWS Grand Junction, CO
- Area
- Whole counties
County Mesa County, CO
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 12:00Z, 3.5 hours before the alert went out and 352 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
- 649 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 34 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 KGJT 181531 COR FFWGJT COC077-181510- BULLETIN - TEST...TEST... FLASH FLOOD WARNING...TEST... NATIONAL WEATHER SERVICE GRAND JUNCTION CO 827 AM MST FRI FEB 18 2000 THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION HAS ISSUED A * FLASH FLOOD WARNING FOR... MESA COUNTY COLORADO IN WESTERN COLORADO * UNTIL 830 AM MST * AT THIS IS A TEST...... SPOTTERS INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN THIS IS A TEST...... MOVING THIS IS A TEST.... * THIS IS A TEST... DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! THIS IS A TEST...
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Feb 18, 7:37 AM MST, 50 minutes earlier.
Area forecast discussion, Feb 18, 7:37 AM MST, 50 minutes before
COZ001>014-017>023-UTZ022>025-027>029-182100- WESTERN COLORADO & EASTERN UTAH AREA FORECAST DISCUSSION - CORRECTION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 737 AM MST FRI FEB 18 2000 CLOUDS AND PRECIPITATION CONTINUE TO DIMINISH ACROSS CWA THIS MORNING SYSTEM MOVES OFF TO THE EAST. SHORT TERM MODELS IN FAIR AGREEMENT PUTTING BULK OF SYSTEM WELL INTO KS BY 12Z AND INTO MIDWEST BY 00Z SATURDAY. TO THE WEST...THERE IS A SPLIT FLOW ALOFT OVER WEST COAST WITH CUTOFF LOW OFF SOUTHERN CA COAST. NORTHERN BRANCH OF FLOW DRAPED DOWN OVER CO WHILE SOUTHERN BRANCH JUST BRUSHES SOUTHERN BORDER OF CWA...BOTH BRANCHES REJOIN JUST EAST OF CO. ALL MODELS MAINTAIN SOME DYNAMIC CONNECTION BETWEEN THE EXITING SYSTEM...THE LOW OFF CA AND A DISTURBANCE EMBEDDED IN NORTHERN BRANCH. THOUGH AIR MASS IS FORECAST TO DRY THROUGH THE PERIOD... AND CURRENT SATELLITE IR LOOPS CONFIRM THIS TREND...BELIEVE LINGERING MOISTURE THIS MORNING ENOUGH FOR ABOVE MENTIONED DYNAMICS TO WORK WITH...CREATING SOME SCATTERED SHOWERS EARLY TODAY. HOWEVER...DON/T EXPECT ENOUGH TO KEEP ADVISORY OUT AND WILL LET CURRENT ADVISORIES EXPIRE. DYNAMICS WEAKEN MORE TONIGHT AND SATURDAY AS LOW REMAINS OFF CA COAST AND TROUGH DEVELOPS OVER EASTERN STATES ALLOWING FOR BUILDING OF WEAK RIDGE OVER SOUTHCENTRAL STATES BY SUNDAY. GUIDANCE TEMPS RUNNING A FEW DEGREES COOLER THAN PAST SEVERAL DAYS AND BELIEVE WITH A LITTLE AFTERNOON SUN THIS PROBABLY ON THE RIGHT TRACK SO WILL STICK CLOSE. FOR EXTENDED...EASTERN PACIFIC LOW FORECAST TO OPEN AND START MOVING INLAND SUNDAY. SYSTEM WEAKENS AS IT APPROACHES CWA BUT EXPECTED TO MAINTAIN ENOUGH ENERGY TO CREATE SCATTERED SHOWERS EARLY NEXT WEEK. CURRENT RUN DIFFERS FROM PREVIOUS FOR FORECAST SUNDAY...CURRENT RUN DIGS AND CUTS OFF ANOTHER LOW OFF CA COAST SUNDAY WHICH WOULD EFFECTIVELY SLOW PROGRESSION OF ANY INCOMING WAVES THUS DECREASING CHANCES OF PRECIPITATION. THOUGH CURRENT RUN AGREES WITH CURRENT UKMET...AM NOT CONFIDENT WITH SOLUTION AS MRF HAS BEEN TRYING TO DRY OUT FORECAST FOR A COUPLE RUNS...JUST KEEPS POSTPONING WHICH DAY. SO WILL NOT MAKE MAJOR ADJUSTMENTS TO WORDING AT THIS TIME LEAVING PERIOD WITH WIDELY SCATTERED TO SCATTERED SHOWERS EACH DAY. EMERGENCY MANAGERS IN NORTHERN AND CENTRAL MOUNTAINS OF WESTERN COLORADO SHOULD MAINTAIN A HEIGHTENED LEVEL OF WEATHER AWARENESS THIS MORNING DUE TO CONTINUING LIGHT SNOWFALL. OTHER EMERGENCY MANAGERS OF WESTERN COLORADO AND EASTERN UTAH SHOULD MAINTAIN A NORMAL LEVEL OF WEATHER AWARENESS THROUGH TODAY. .GJT...NONE. GL
Nearby
Flash Flood Warnings in Colorado, 2000Every flash flood 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; the sounding from the Mesonet's radiosonde archive.