Alert archive / Arizona / Flash Flood Warnings in 2001
Flash Flood Warning 1, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Jul 5, 2001, 1:58 PM MST for Yavapai County, Arizona. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jul 5, 2001, 1:58 PM MST (20:58 UTC)
- Expired
- Jul 5, 2001, 4:00 PM MST
- In force
- 2 hr
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 49 km from the middle of the area, began a volume at 21:02 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.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.0 hours before the alert went out and 64 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
- 393 J/kg
- Mixed-layer CIN
- -153 J/kg
- Mixed-layer LCL
- 1839 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KFGZ 052102 FFWFGZ AZC025-060000- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 158 PM MST THU JUL 5 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * FLASH FLOOD WARNING FOR... EAST CENTRAL YAVAPAI COUNTY IN ARIZONA * UNTIL 500 PM MST * AT 158 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN 10 MILES EAST OF RIMROCK...OR ABOUT 18 MILES NORTHEAST OF CAMP VERDE...MOVING WEST AT 5 MPH. * THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL AFFECT OR PASS CLOSE TO... OVER RIMROCK AT 315 PM MST OVER LAKE MONTEZUMA AT 330 PM MST OVER MCGUIREVILLE AT 350 PM MST EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN. FLOOD WATERS ARE MOVING DOWN WET BEAVER CREEK FROM THE YAVAPAI COUNTY LINE TO THE WET BEAVER RANGER STATION. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. LAT...LON 3463 11183 3458 11181 3467 11154 3479 11161 MAS
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 Flagstaff, AZ wrote its last area forecast discussion before this flash flood warning went out at Jul 5, 9:00 AM MST, 4 hours 58 minutes earlier.
Area forecast discussion, Jul 5, 9:00 AM MST, 4 hours 58 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 900 AM MST THU JUL 05 2001 SYNOPSIS...HIGH PRESSURE ALOFT WILL SHIFT EASTWARD OVER THE NEXT FEW DAYS. THIS WILL RESULT IN AN INCREASINGLY MOIST SOUTHERLY FLOW INTO ARIZONA. LOOK FOR DAILY SHOWERS AND THUNDERSTORMS OVER NORTHERN ARIZONA TO CONTINUE INTO NEXT WEEK. DISCUSSION...UPPER RIDGE CENTERED OVER COLORADO THIS MORNING. MODELS IN GENERAL AGREEMENT IN MOVING THIS FEATURE EASTWARD OVER THE NEXT TWO DAYS. FOR TODAY MID TO UPPER FLOW WILL REMAIN SOUTHEASTERLY WITH THE MAIN THUNDERSTORM ACTIVITY OVER THE WESTERN THIRD OF THE COUNTY WARNING AREA (CWA) WHERE THE HIGHEST MOISTURE VALUES ARE LOCATED. THIS INCLUDES THE WESTERN MOGOLLON RIM...YAVAPAI COUNTY...THE COCONINO PLATEAU...GRAND CANYON COUNTRY AND THE KAIBAB PLATEAU. THE REMAINDER OF THE AREA WILL SEE JUST ISOLATED THUNDERSTORMS AS DRIER AIR CONTINUES TO FEED IN FROM NEW MEXICO. ON FRIDAY AND SATURDAY A WEAK TROUGH (CURRENTLY ALONG THE BAJA CALIFORNIA COAST) WILL MOVE NORTHWARD ACROSS WESTERN ARIZONA AND SOUTHERN CALIFORNIA. THE NET RESULT WILL BE A DEEPENING AND STRENGTHENING SOUTHERLY FLOW. PRECIPITABLE WATER VALUES IN SOUTHERN ARIZONA ARE IN THE 1.50 TO 2.00 INCH RANGE TODAY AND THIS MOISTURE WILL BE ADVECTED ACROSS NORTHERN ARIZONA ON FRIDAY AND SATURDAY. AS A RESULT...COULD SEE THE MOST SIGNIFICANT THREAT OF FLASH FLOOD PRODUCING THUNDERSTOR|MS THIS SEASON. OTHERWISE...WITH MORE MOISTURE AND CLOUDS DAYTIME TEMPERATURES WILL GRADUALLY LOWER WITH GENERALLY LIGHT WINDS. CURRENT FORECAST IN GOOD SHAPE. MCCOLLUM .FGZ...NONE.
In the hours before
Special weather statement, Jul 5, 9:28 AM MST, 4 hours 30 minutes before
AZZ004>018-037>040-051930- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 930 PM MST THU JUL 05 2001 ...ISOLATED SEVERE THUNDERSTORMS OVER WESTERN YAVAPAI AND COCONINO COUNTIES LATER THIS AFTERNOON AND INTO THE EVENING... DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO FORM THIS AFTERNOON...MAINLY OVER THE KAIBAB PLATEAU...GRAND CANYON COUNTRY AND WESTERN MOGOLLON RIM. SOUTHEAST FLOW ALOFT WILL PUSH THESE STORMS INTO THE LOWER TERRAIN OF WESTERN YAVAPAI AND COCONINO COUNTIES BY MID AFTERNOON. AS THE STORMS MOVE INTO DEEPER MOISTURE A FEW WILL BECOME SEVERE WITH THE MAIN THREAT BEING WIND GUSTS OF 50 TO 60 MPH. STORMS WILL ALSO BE CAPABLE OF PRODUCING DOWNPOURS OF 1 TO 2 INCHES BUT WIDESPREAD HEAVY RAINFALL IS NOT ANTICIPATED. STORMS SHOULD CONTINUE INTO THE EVENING HOURS BEFORE DIMINISHING.
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 8:34 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 41 min |
| Jul 4, 9:18 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Yavapai | 27 min |
| Jul 5, 11:50 AM MST | Severe Thunderstorm Warning | FGZ | Coconino | 35 min |
| Jul 5, 12:52 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Yavapai | 43 min |
| Jul 5, 1:34 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Yavapai | 41 min |
| Jul 5, 2:13 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 47 min |
| Jul 5, 3:08 PM MST | Severe Thunderstorm Warning | FGZ | Gila | 52 min |
| Jul 5, 4:06 PM MST | Severe Thunderstorm Warning | FGZ | Gila | 39 min |
| Jul 5, 4:32 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 43 min |
Nearby
Flash Flood Warnings in Arizona, 2001Every flash flood warning in 2001
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.