Alert archive / Texas / Tornado Warnings in 1999

Tornado Warning 28, NWS Midland/Odessa, TX

May 1, 1999Martin County, Texas

NWS Midland/Odessa, TX issued this tornado warning at May 1, 1999, 5:36 PM CDT for Martin County, Texas. It was in force for 24 min. 1 report came from 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, with what was reported inside it.

The facts

Issued
May 1, 1999, 5:36 PM CDT (22:36 UTC)
Expired
May 1, 1999, 6:00 PM CDT
In force
24 min
Issued by
NWS Midland/Odessa, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Martin County, TX

The radar

The Midland/Odessa radar (KMAF), 51 km from the middle of the area, began a volume at 22:37 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.

What was reported inside it

TimeReportWhereRemark
May 1, 5:36 PM CDTTornado F0Tarzan, TXThe cell that had produced the tornado in Ector County, dissipated, but its associated cluster began to favor one cell and by the time the cluster was in Eastern Andrews County it was forming into an HP supercell. Just after crossing into Martin County the st

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 1, 3:00 PM CDTSevere Thunderstorm WatchSPC5 hr
May 1, 5:00 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 10.6 hours before the alert went out and 51 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-pSkew-T log-p diagram, Midland Regional, TX at 12:00Z on 1999-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 199 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 12:00Z on 1999-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 317 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
199 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
536 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
317 m²/s²
0-3 km storm-relative helicity
505 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.3

Open this sounding in Storm Lab

The text

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

999 
WFUS1 KMAF 012239 RRA
TORMAF
TXC317-012300-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIDLAND-ODESSA TX
536 PM CDT SAT MAY 1 1999

THE MIDLAND-ODESSA NATIONAL WEATHER SERVICE OFFICE HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN MARTIN COUNTY IN TEXAS

* UNTIL 600 PM CDT

* AT 532 PM CDT...A WEATHER SPOTTER REPORTED A BRIEF TORNADO    
  TOUCHDOWN NEAR THE INTERSECTION OF HWY 349 AND HWY 176...OR ABOUT  
  10 MILES WEST OF TARZAN...MOVING NORTHEAST AT 20 MPH. THIS STORM  
  IS CAPABLE OF PRODUCING ADDITIONAL TORNADOES.

* THE THUNDERSTORM WITH THE TORNADO IS EXPECTED TO BE NEAR...
  4 MILES SOUTHWEST OF THREE LEAGUES...8 MILES WEST OF FLOWER GROVE
  AT 605 PM CDT

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST SEVERE WEATHER
INFORMATION.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING 
FOR THIS AREA.

LAT...LON 3238 10220 3222 10217 3250 10182 3251 10206

DJK

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Midland/Odessa, TX wrote its last area forecast discussion before this tornado warning went out at May 1, 1:45 PM CDT, 3 hours 51 minutes earlier.

Area forecast discussion, May 1, 1:45 PM CDT, 3 hours 51 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIDLAND TX
145 PM CDT SAT MAY 1 1999

BLOCKING PATTERN OVER THE CENTRAL U.S. FINALLY BEGINNING TO BREAK UP.
MAIN CHALLENGE THIS PERIOD IS TO FIGURE OUT THE JUST HOW QUICKLY THE
UPPER LOW WILL LIFT OUT OF THE SWRN US...AND MUCH OF THIS WILL DEPEND
ON THE TIMING AND MOVEMENT OF THE OTHER LOW OFF THE SERN U.S. COAST.
IT LOOKS LIKE THE SERN LOW WILL FINALLY BEGIN TO PROGRESS EWD...AND
THIS SHOULD ALLOW THE LOW TO OUR WEST TO BEGIN LIFTING OUT ON
SUNDAY. FOR TONIGHT...SIGNIFICANT CONVECTION IS THE MAIN CONCERN. I
BELIEVE THE DRYLINE WILL CONTINUE TO ADVANCE EWD THIS AFTERNOON AND
KICK OFF STORMS. WITH THE LOW BEGINNING TO LIFT...I EXPECT A SERIES
OF SHORTWAVES TO EJECT OUT OF THE SYSTEM...AND THIS WILL PROBABLY
KEEP CONVECTION ACTIVE TONIGHT. TOMORROW THE LOW BEGINS TO LIFT...BUT
I STILL EXPECT SOME LINGERING CLOUDS AND PCPN DURING THE MORNING
HOURS. LOOKS LIKE SOME DRIER SFC AIR WILL SWEEP IN FROM THE WEST
DURING THE AFTERNOON TOMORROW AS THE SFC LOW LIFTS NORTH...BUT WINDS
SHOULD QUICKLY SWITCH BACK AROUND TO A SLY OR SELY DIRECTION LATE
SUNDAY NIGHT...AND THEN BECOME MORE SWLY DURING THE DAY ON MONDAY FOR
A BIT OF A WARMUP. UPPER LEVEL FLOW PATTERN ON MONDAY SHOULD BE
NEARLY ZONAL.

PRELIM TEMPS/POPS...
MAF 52/78/53/85 4200
CNM 52/81/52/87 3100
MRF 45/77/45/80 2100
P07 58/79/56/86 3100

DJK

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 30, 7:16 PM CDTFlash Flood WarningMAFGaines3 hr
Apr 30, 7:36 PM CDTSevere Thunderstorm WarningMAFGaines39 min
Apr 30, 9:58 PM CDTFlash Flood WarningMAFDawson, Gaines107 min
Apr 30, 10:19 PM CDTFlash Flood WarningMAFDawson101 min
Apr 30, 11:30 PM CDTFlash Flood WarningMAFBorden2 hr
May 1, 2:37 PM CDTTornado WarningMAFAndrews68 min
May 1, 3:20 PM CDTFlash Flood WarningMAFGaines3 hr
May 1, 3:58 PM CDTTornado WarningMAFAndrews, Ector32 min
May 1, 4:06 PM CDTTornado WarningMAFGaines24 min
May 1, 4:25 PM CDTTornado WarningMAFDawson, Gaines35 min
May 1, 4:29 PM CDTTornado WarningMAFAndrews46 min
May 1, 4:56 PM CDTTornado WarningMAFDawson34 min
May 1, 5:56 PM CDTTornado WarningMAFMartin34 min
May 1, 6:30 PM CDTTornado WarningMAFMartin30 min

Nearby

Tornado Warnings in Texas, 1999Every tornado warning in 1999Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.