Alert archive / Texas / Tornado Watches in 2008

Tornado Watch 89

March 3, 200832 counties in Texas

The Storm Prediction Center issued this tornado watch at Mar 3, 2008, 1:57 AM CST for 32 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 3, 2008, 1:57 AM CST (07:57 UTC)
Expired
Mar 3, 2008, 7:55 AM CST
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 32 counties

Anderson County, TX, Bell County, TX, Bosque County, TX, Collin County, TX, Comanche County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Ellis County, TX, Falls County, TX, Fannin County, TX, Freestone County, TX, Hamilton County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Lampasas County, TX, Leon County, TX, Limestone County, TX, McLennan County, TX, Milam County, TX, Mills County, TX, Navarro County, TX, Rains County, TX, Robertson County, TX, Rockwall County, TX, Somervell County, TX, Van Zandt County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 59 km from the middle of the area, began a volume at 07:57 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
30%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Mar 3, 4:58 AM CSTSevere Thunderstorm WarningFWDBell, Falls, Limestone, McLennan62 min
Mar 3, 5:38 AM CSTSevere Thunderstorm WarningFWDFreestone, Navarro67 min
Mar 3, 5:59 AM CSTSevere Thunderstorm WarningFWDAnderson, Henderson61 min
Mar 3, 6:14 AM CSTSevere Thunderstorm WarningFWDVan Zandt46 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 8.0 hours before the alert went out and 86 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, Fort Worth, TX at 00:00Z on 2008-03-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1534 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, Fort Worth, TX at 00:00Z on 2008-03-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 210 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
1534 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
836 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
210 m²/s²
0-3 km storm-relative helicity
335 m²/s²
Significant tornado parameter
2.3
Supercell composite
10.5

Open this sounding in Storm Lab

The text

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

000
WWUS20 KWNS 030800
SEL9  
SPC WW 030800
TXZ000-031500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 89
NWS STORM PREDICTION CENTER NORMAN OK
155 AM CST MON MAR 3 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       CENTRAL AND NORTH TEXAS

EFFECTIVE THIS MONDAY MORNING FROM 155 AM UNTIL 900 AM CST.

TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 20 MILES WEST SOUTHWEST OF
TEMPLE TEXAS TO PARIS TEXAS.  FOR A COMPLETE DEPICTION OF THE
WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 85. WATCH NUMBER 85 WILL NOT BE IN EFFECT AFTER 155
AM CST. CONTINUE...WW 87...WW 88...

DISCUSSION...QLCS WITH EMBEDDED SUSTAINED STORMS/SUPERCELLS SHOULD
CONTINUE GENERALLY SEWD THROUGH LATE THIS MORNING...WHILE INDIVIDUAL
STORMS MOVE ENE WITHIN IT.  BEHAVIOR OF EXISTING STORMS SUGGESTS
PRESENCE OF A CAP...OR AT LEAST APPRECIABLE CIN...IN WARM SECTOR
AHEAD OF CONVECTIVE SYSTEM.  THIS SHOULD KEEP NEW DEVELOPMENT
CONFINED TO ZONE OF UPLIFT ALONG SYSTEM GUST FRONT.  WHILE THIS
SHOULD LIMIT OVERALL POTENTIAL FOR TORNADOES...ARRIVAL OF STRONGER
DEEP WIND FIELD LATER THIS MORNING /AS NM UPR LOW CONTINUES
EWD/...AND FAIRLY RICH MOISTURE INFLOW...SUGGEST ENOUGH POTENTIAL
FOR ISOLATED TORNADOES TO EXTEND EXISTING TORNADO WATCH IN TIME AND
EWD EXTENT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25040.


...CORFIDI

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 2, 6:05 PM CSTTornado WatchSPCBosque, Callahan, Collin, Comanche, Cooke, Dallas and 28 more8 hr
Mar 2, 8:01 PM CSTMesoscale DiscussionSPCCollin, Delta, Fannin, Franklin, Grayson, Hopkins and 4 more59 min
Mar 2, 8:23 PM CSTTornado WatchSPCBowie, Camp, Cass, Franklin, Morris, Red River and 3 more8 hr
Mar 2, 11:04 PM CSTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Comanche, Concho and 12 more56 min
Mar 2, 11:27 PM CSTSevere Thunderstorm WatchSPCBrown, Coke, Coleman, Concho, Crockett, Irion and 13 more5 hr
Mar 3, 1:36 AM CSTMesoscale DiscussionSPCAnderson, Bell, Bosque, Bowie, Burnet, Camp and 31 more54 min
Mar 3, 3:01 AM CSTMesoscale DiscussionSPCBowie, Camp, Cass, Franklin, Harrison, Marion and 4 more89 min
Mar 3, 3:24 AM CSTMesoscale DiscussionSPCBastrop, Blanco, Brazos, Burleson, Burnet, Grimes and 9 more96 min
Mar 3, 5:21 AM CSTMesoscale DiscussionSPCAnderson, Angelina, Bowie, Brazos, Burleson, Camp and 28 more84 min
Mar 3, 6:47 AM CSTSevere Thunderstorm WatchSPCAngelina, Austin, Bowie, Brazoria, Brazos, Burleson and 43 more6 hr
Mar 3, 10:18 AM CSTMesoscale DiscussionSPCAngelina, Austin, Bowie, Brazoria, Brazos, Burleson and 43 more87 min
Mar 3, 10:36 AM CSTTornado WatchSPCHardin, Jasper, Jefferson, Newton, Orange, Sabine and 3 more9 hr

Nearby

Tornado Watches in Texas, 2008Every tornado watch in 2008

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.