Alert archive / Texas / Severe Thunderstorm Watches in 2013

Severe Thunderstorm Watch 49

March 9, 201312 counties in Oklahoma; 35 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Mar 9, 2013, 1:46 PM CST for 12 counties in Oklahoma; 35 counties in Texas. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Mar 9, 2013, 1:46 PM CST (19:46 UTC)
Expired
Mar 9, 2013, 11:00 PM CST
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 47 counties

Atoka County, OK, Bryan County, OK, Carter County, OK, Coal County, OK, Garvin County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, Murray County, OK, Pontotoc County, OK, Stephens County, OK, Bosque County, TX, Brown County, TX, Callahan County, TX, Clay County, TX, Coleman County, TX, Collin County, TX, Comanche County, TX, Cooke County, TX, Coryell County, TX, Dallas County, TX, Denton County, TX, Eastland County, TX, Erath County, TX, Fannin County, TX, Grayson County, TX, Hamilton County, TX, Hood County, TX, Jack County, TX, Johnson County, TX, Kimble County, TX, Lampasas County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, San Saba County, TX, Somervell County, TX, Stephens County, TX, Sutton County, TX, Tarrant County, TX, Wise County, TX, Young County, TX

The radar

The Dyess AFB radar (KDYX), 88 km from the middle of the area, began a volume at 19:49 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
20%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 9, 1:47 PM CSTSevere Thunderstorm WarningFWDYoung43 min
Mar 9, 2:00 PM CSTSevere Thunderstorm WarningOUNArcher, Clay60 min
Mar 9, 2:05 PM CSTSevere Thunderstorm WarningOUNGarvin, Grady, McClain, Stephens40 min
Mar 9, 2:17 PM CSTSevere Thunderstorm WarningFWDJack, Young58 min
Mar 9, 2:26 PM CSTSevere Thunderstorm WarningFWDYoung34 min
Mar 9, 2:38 PM CSTSevere Thunderstorm WarningOUNJefferson67 min
Mar 9, 3:07 PM CSTSevere Thunderstorm WarningFWDMontague53 min
Mar 9, 3:13 PM CSTSevere Thunderstorm WarningFWDJack, Wise32 min
Mar 9, 3:28 PM CSTSevere Thunderstorm WarningOUNCarter, Jefferson, Love, Marshall62 min
Mar 9, 3:36 PM CSTSevere Thunderstorm WarningFWDJack, Wise54 min
Mar 9, 3:55 PM CSTSevere Thunderstorm WarningFWDCooke, Montague65 min
Mar 9, 4:09 PM CSTSevere Thunderstorm WarningFWDMontague51 min
Mar 9, 4:29 PM CSTSevere Thunderstorm WarningFWDWise46 min
Mar 9, 4:33 PM CSTSevere Thunderstorm WarningFWDJack, Palo Pinto, Parker57 min
Mar 9, 4:37 PM CSTSevere Thunderstorm WarningSJTBrown23 min
Mar 9, 4:52 PM CSTSevere Thunderstorm WarningSJTBrown38 min
Mar 9, 4:57 PM CSTSevere Thunderstorm WarningFWDCooke, Denton, Montague, Wise63 min
Mar 9, 5:04 PM CSTSevere Thunderstorm WarningFWDComanche, Eastland56 min
Mar 9, 5:11 PM CSTSevere Thunderstorm WarningSJTBrown, Coleman, McCulloch, San Saba49 min
Mar 9, 5:14 PM CSTSevere Thunderstorm WarningFWDWise46 min
Mar 9, 5:19 PM CSTSevere Thunderstorm WarningFWDErath, Hood, Palo Pinto, Parker56 min
Mar 9, 5:28 PM CSTSevere Thunderstorm WarningSJTConcho, Menard47 min
Mar 9, 5:37 PM CSTSevere Thunderstorm WarningSJTConcho, McCulloch38 min
Mar 9, 5:53 PM CSTSevere Thunderstorm WarningSJTConcho, McCulloch37 min
Mar 9, 5:56 PM CSTSevere Thunderstorm WarningSJTBrown, McCulloch, San Saba49 min
Mar 9, 5:57 PM CSTSevere Thunderstorm WarningSJTConcho, Menard33 min
Mar 9, 6:11 PM CSTSevere Thunderstorm WarningSJTKimble34 min
Mar 9, 6:20 PM CSTSevere Thunderstorm WarningSJTBrown, McCulloch, San Saba40 min
Mar 9, 6:23 PM CSTSevere Thunderstorm WarningFWDCooke, Denton, Grayson67 min
Mar 9, 6:28 PM CSTSevere Thunderstorm WarningSJTConcho, Menard32 min
Mar 9, 6:43 PM CSTSevere Thunderstorm WarningSJTKimble, Menard32 min
Mar 9, 6:52 PM CSTSevere Thunderstorm WarningSJTKimble, McCulloch, Mason, Menard38 min
Mar 9, 6:56 PM CSTSevere Thunderstorm WarningSJTKimble, Menard, Sutton49 min
Mar 9, 7:05 PM CSTTornado WarningSJTKimble25 min
Mar 9, 7:08 PM CSTSevere Thunderstorm WarningSJTConcho, Menard37 min
Mar 9, 7:16 PM CSTSevere Thunderstorm WarningSJTMcCulloch29 min
Mar 9, 7:18 PM CSTSevere Thunderstorm WarningFWDHamilton57 min
Mar 9, 7:20 PM CSTSevere Thunderstorm WarningSJTSan Saba10 min
Mar 9, 7:26 PM CSTSevere Thunderstorm WarningSJTKimble, Mason49 min
Mar 9, 7:35 PM CSTSevere Thunderstorm WarningSJTSan Saba25 min
Mar 9, 7:35 PM CSTSevere Thunderstorm WarningSJTMcCulloch25 min
Mar 9, 7:39 PM CSTSevere Thunderstorm WarningFWDMills66 min
Mar 9, 7:47 PM CSTSevere Thunderstorm WarningSJTKimble, Menard43 min
Mar 9, 8:09 PM CSTSevere Thunderstorm WarningSJTMcCulloch, San Saba51 min
Mar 9, 8:11 PM CSTSevere Thunderstorm WarningFWDBosque, Coryell, Hamilton64 min
Mar 9, 8:24 PM CSTTornado WarningSJTKimble, Mason, Menard36 min
Mar 9, 8:46 PM CSTSevere Thunderstorm WarningSJTKimble, Mason29 min
Mar 9, 8:51 PM CSTTornado WarningSJTKimble, Mason24 min
Mar 9, 8:58 PM CSTSevere Thunderstorm WarningSJTKimble32 min
Mar 9, 9:10 PM CSTSevere Thunderstorm WarningFWDBosque, Hill, McLennan65 min
Mar 9, 9:15 PM CSTSevere Thunderstorm WarningSJTMason30 min
Mar 9, 10:28 PM CSTSevere Thunderstorm WarningFWDBell, Coryell, McLennan62 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 12:00Z, 7.8 hours before the alert went out and 99 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 12:00Z on 2013-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2013-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 418 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
494 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
418 m²/s²
0-3 km storm-relative helicity
599 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 8, 7:24 PM CSTMesoscale DiscussionSPCBeaver, Beckham, Ellis, Harmon, Harper, Roger Mills and 1 more96 min
Mar 8, 8:09 PM CSTSevere Thunderstorm WatchSPCBeaver, Beckham, Ellis, Greer, Harmon, Harper and 3 more7 hr
Mar 8, 11:33 PM CSTMesoscale DiscussionSPCBeaver, Beckham, Ellis, Greer, Harmon, Harper and 2 more87 min
Mar 9, 2:39 AM CSTMesoscale DiscussionSPCBeaver, Beckham, Dewey, Ellis, Greer, Harmon and 5 more66 min
Mar 9, 12:39 PM CSTMesoscale DiscussionSPCCarter, Comanche, Cotton, Garvin, Grady, Jefferson and 2 more2 hr
Mar 9, 3:34 PM CSTMesoscale DiscussionSPCAtoka, Bryan, Carter, Coal, Garvin, Hughes and 6 more86 min
Mar 9, 5:41 PM CSTMesoscale DiscussionSPCAtoka, Bryan, Coal, Haskell, Hughes, Johnston and 6 more94 min

Nearby

Severe Thunderstorm Watches in Texas, 2013Severe Thunderstorm Watches in Oklahoma, 2013Every severe thunderstorm watch in 2013

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.