Alert archive / New Mexico / Flash Flood Warnings in 1999

Flash Flood Warning 4, NWS Albuquerque, NM

April 30, 1999Chaves County, New Mexico

NWS Albuquerque, NM issued this flash flood warning at Apr 30, 1999, 8:54 AM MDT for Chaves County, New Mexico. 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 counties it named.

The facts

Issued: Apr 30, 1999, 8:54 AM MDT (14:54 UTC)
Expired: Apr 30, 1999, 10:55 AM MDT
In force: 2 hr
Issued by: NWS Albuquerque, NM
Area: Whole counties

County Chaves County, NM

The radar

The Holloman AFB radar (KHDX), 157 km from the middle of the area, began a volume at 14:53 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

Midland Regional, TX (KMAF), launched 12:00Z, 2.9 hours before the alert went out and 264 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: 21 J/kg
Mixed-layer CIN: -289 J/kg
Mixed-layer LCL: 1062 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 216 m²/s²
0-3 km storm-relative helicity: 296 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KABQ 301456
FFWABQ

NMC005-301655-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
854 AM MDT FRI APR 30 1999

THE NATIONAL WEATHER SERVICE IN ALBUQUERQUE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHAVES COUNTY IN SOUTHEASTERN NEW MEXICO

* UNTIL 1055 AM MDT

* AT 850 AM MDT... LAW ENFORCEMENT AND EMERGENCY MANAGEMENT OFFICIALS
  REPORTED HEAVY RAIN WITH ROAD FLOODING AND RAPID RUNOFF INTO
  ARROYOS IN THE PECOS VALLEY FROM NEAR LAKE ARTHUR TO NORTH OF
  ROSWELL.

* ROAD FLOODING WAS ALREADY BEING REPORTED IN THE ROSWELL AREA WITH
  ADDITIONAL THUNDERSTORMS MOVING NORTHWARD INTO THE AREA LIKELY TO
  PRODUCE ADDITIONAL HEAVY RAIN THIS MORNING.

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT
TO CROSS BRIDGES...DIPS...ARROYOS OR LOW SPOTS IF WATER COVERS THE
ROADWAY.

&

The office that day

Everything else NWS Albuquerque, NM issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 29, 8:23 PM MDT	Severe Thunderstorm Warning	ABQ	Chaves	47 min
Apr 29, 9:18 PM MDT	Severe Thunderstorm Warning	ABQ	Chaves	42 min
Apr 30, 1:24 AM MDT	Flash Flood Warning	ABQ	De Baca, Guadalupe	3 hr
Apr 30, 1:24 AM MDT	Flash Flood Warning	ABQ	Chaves	3 hr
Apr 30, 4:26 AM MDT	Flash Flood Warning	ABQ	De Baca, Guadalupe, Quay	3 hr
Apr 30, 10:31 AM MDT	Flash Flood Warning	ABQ	Colfax, Mora, Taos	3 hr
Apr 30, 10:31 AM MDT	Flash Flood Warning	ABQ	Guadalupe, San Miguel	3 hr
Apr 30, 11:50 AM MDT	Flash Flood Warning	ABQ	Colfax, Mora, Taos	3 hr
Apr 30, 11:50 AM MDT	Flash Flood Warning	ABQ	Guadalupe, San Miguel	3 hr
Apr 30, 5:08 PM MDT	Flash Flood Warning	ABQ	Guadalupe	112 min

Nearby

Flash Flood Warnings in New Mexico, 1999 Every flash flood warning in 1999

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.