Alert archive / Texas / Tornado Watches in 2013
Tornado Watch 192
The Storm Prediction Center issued this tornado watch at May 20, 2013, 2:21 PM CDT for 39 counties in Texas. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- May 20, 2013, 2:21 PM CDT (19:21 UTC)
- Expired
- May 20, 2013, 10:00 PM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 39 counties
Bosque County, TX, Brown County, TX, Burnet County, TX, Callahan County, TX, Coleman County, TX, Collin County, TX, Comanche County, TX, Concho County, TX, Cooke County, TX, Coryell County, TX, Denton County, TX, Eastland County, TX, Erath County, TX, Fannin County, TX, Gillespie County, TX, Grayson County, TX, Hamilton County, TX, Hood County, TX, Jack County, TX, Kerr County, TX, Kimble County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Runnels County, TX, San Saba County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Taylor County, TX, Throckmorton County, TX, Wise County, TX, Young County, TX
The radar
The Dyess AFB radar (KDYX), 59 km from the middle of the area, began a volume at 19:25 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
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
38 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 3:30 PM CDT | Severe Thunderstorm Warning | SJT | Jones, Shackelford | 45 min |
| May 20, 3:33 PM CDT | Severe Thunderstorm Warning | FWD | Eastland | 57 min |
| May 20, 3:41 PM CDT | Severe Thunderstorm Warning | SJT | Brown | 49 min |
| May 20, 4:11 PM CDT | Tornado Warning | SJT | Brown | 34 min |
| May 20, 4:17 PM CDT | Severe Thunderstorm Warning | FWD | Stephens | 58 min |
| May 20, 4:35 PM CDT | Tornado Warning | SJT | Brown | 25 min |
| May 20, 4:38 PM CDT | Severe Thunderstorm Warning | FWD | Comanche | 52 min |
| May 20, 4:45 PM CDT | Severe Thunderstorm Warning | FWD | Jack, Palo Pinto, Young | 60 min |
| May 20, 4:51 PM CDT | Tornado Warning | SJT | Brown | 24 min |
| May 20, 5:08 PM CDT | Tornado Warning | SJT | Brown | 37 min |
| May 20, 5:10 PM CDT | Tornado Warning | FWD | Comanche | 50 min |
| May 20, 5:17 PM CDT | Severe Thunderstorm Warning | FWD | Jack, Young | 58 min |
| May 20, 5:27 PM CDT | Tornado Warning | FWD | Montague | 63 min |
| May 20, 5:41 PM CDT | Tornado Warning | SJT | Brown | 34 min |
| May 20, 5:52 PM CDT | Severe Thunderstorm Warning | FWD | Montague, Wise | 53 min |
| May 20, 5:59 PM CDT | Tornado Warning | FWD | Comanche, Mills | 46 min |
| May 20, 6:15 PM CDT | Severe Thunderstorm Warning | SJT | Brown | 30 min |
| May 20, 6:20 PM CDT | Severe Thunderstorm Warning | FWD | Cooke | 55 min |
| May 20, 6:29 PM CDT | Tornado Warning | FWD | Cooke, Montague | 61 min |
| May 20, 6:31 PM CDT | Flash Flood Warning | FWD | Montague | 119 min |
| May 20, 6:41 PM CDT | Severe Thunderstorm Warning | SJT | Brown | 34 min |
| May 20, 6:43 PM CDT | Severe Thunderstorm Warning | FWD | Comanche, Hamilton, Mills | 62 min |
| May 20, 6:44 PM CDT | Flash Flood Warning | FWD | Comanche | 4 hr |
| May 20, 6:44 PM CDT | Tornado Warning | SJT | Brown | 31 min |
| May 20, 6:52 PM CDT | Tornado Warning | FWD | Comanche, Hamilton, Mills | 53 min |
| May 20, 6:57 PM CDT | Severe Thunderstorm Warning | FWD | Jack, Palo Pinto, Stephens, Young | 63 min |
| May 20, 7:15 PM CDT | Severe Thunderstorm Warning | FWD | Montague | 45 min |
| May 20, 7:15 PM CDT | Severe Thunderstorm Warning | SJT | Brown | 45 min |
| May 20, 7:44 PM CDT | Tornado Warning | FWD | Comanche, Hamilton, Mills | 46 min |
| May 20, 8:03 PM CDT | Severe Thunderstorm Warning | SJT | Brown | 27 min |
| May 20, 8:27 PM CDT | Severe Thunderstorm Warning | FWD | Comanche | 63 min |
| May 20, 8:29 PM CDT | Tornado Warning | FWD | Hamilton | 61 min |
| May 20, 8:49 PM CDT | Severe Thunderstorm Warning | SJT | Brown | 41 min |
| May 20, 8:51 PM CDT | Severe Thunderstorm Warning | FWD | Hamilton, Mills | 54 min |
| May 20, 8:51 PM CDT | Tornado Warning | SJT | Brown | 24 min |
| May 20, 9:25 PM CDT | Severe Thunderstorm Warning | FWD | Comanche, Mills | 65 min |
| May 20, 9:31 PM CDT | Severe Thunderstorm Warning | FWD | Coryell, Hamilton | 44 min |
| May 20, 9:54 PM CDT | Tornado Warning | FWD | Coryell, Hamilton | 36 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, 7.4 hours before the alert went out and 128 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
- 747 J/kg
- Mixed-layer CIN
- -390 J/kg
- Mixed-layer LCL
- 893 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 275 m²/s²
- 0-3 km storm-relative helicity
- 216 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
294
WWUS20 KWNS 201924
SEL2
SPC WW 201924
TXZ000-210300-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 192
NWS STORM PREDICTION CENTER NORMAN OK
220 PM CDT MON MAY 20 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
CENTRAL AND NORTHERN TEXAS
* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 220 PM UNTIL
1000 PM CDT.
* PRIMARY THREATS INCLUDE...
A FEW TORNADOES POSSIBLE
SEVERAL LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL
EVENTS TO 3 INCHES IN DIAMETER POSSIBLE
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES WEST NORTHWEST OF
SHERMAN TEXAS TO 65 MILES SOUTHEAST OF SAN ANGELO TEXAS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU2).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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...CONTINUE...WW 189...WW 190...WW 191...
DISCUSSION...DISCRETE SUPERCELLS ARE EXPECTED TO INITIATE ALONG THE
DRYLINE DURING THE NEXT FEW HOURS...BEFORE 30-40 KT DEEP LAYER MEAN
WEST SOUTHWESTERLY FLOW SUPPORTS PROPAGATION AWAY FROM THE DRY LINE
INTO PARTS OF NORTHERN AND CENTRAL TEXAS. LOW-LEVEL HODOGRAPHS ARE
EXPECTED TO STILL STRENGTHEN SOME LATE THIS AFTERNOON INTO THE
EVENING...PARTICULARLY NEAR THE RED RIVER. AS THIS OCCURS...AND
ACTIVITY SPREADS INTO A LESS STRONGLY HEATED/HIGHER RELATIVELY
HUMIDITY BOUNDARY LAYER AIR MASS EAST OF THE DRY LINE...A RISK FOR
TORNADOES WILL EXIST...IN ADDITION TO THE POTENTIAL FOR LARGE HAIL
AND LOCALLY DAMAGING WIND GUSTS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25025.
...KERRSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 8:53 PM CDT | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Canadian, Carter, Cherokee and 48 more | 67 min |
| May 19, 10:44 PM CDT | Tornado Watch | SPC | Adair, Cherokee, Craig, Creek, Delaware, Haskell and 19 more | 5 hr |
| May 20, 2:44 AM CDT | Mesoscale Discussion | SPC | Craig, Delaware, Mayes, Nowata, Osage, Ottawa and 3 more | 2 hr |
| May 20, 12:26 PM CDT | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Canadian, Carter, Cherokee and 42 more | 2 hr |
| May 20, 1:10 PM CDT | Tornado Watch | SPC | Adair, Atoka, Bryan, Caddo, Canadian, Carter and 49 more | 9 hr |
| May 20, 2:31 PM CDT | Mesoscale Discussion | SPC | Craig, Creek, Lincoln, Logan, Nowata, Okfuskee and 7 more | 119 min |
| May 20, 5:34 PM CDT | Mesoscale Discussion | SPC | Love | 56 min |
| May 20, 6:33 PM CDT | Mesoscale Discussion | SPC | Bryan, Johnston, Love, Marshall | 57 min |
| May 20, 1:19 PM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Brown, Burnet, Callahan, Clay and 29 more | 116 min |
Nearby
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.