Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 310, NWS San Angelo, TX

October 21, 2015McCulloch County, San Saba County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Oct 21, 2015, 6:54 PM CDT for McCulloch County, San Saba County, Texas. It was in force for 30 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Oct 21, 2015, 6:54 PM CDT (23:54 UTC)
Expired
Oct 21, 2015, 7:24 PM CDT
In force
30 min
Issued by
NWS San Angelo, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties McCulloch County, TX, San Saba County, TX

The radar

The San Angelo radar (KSJT), 129 km from the middle of the area, began a volume at 23:55 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
Oct 21, 7:00 PM CDTTSTM WND DMG2 Ene East Sweden, TXTREE LIMBS AND POWER LINES DOWN.
Oct 21, 7:00 PM CDTHAIL 12 Ene East Sweden, TXTREE LIMBS AND POWER LINES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 11.9 hours before the alert went out and 255 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, Del Rio, TX at 12:00Z on 2015-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 12:00Z on 2015-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 square meters per square second.1939587897Sfc1 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
13 J/kg
Mixed-layer CIN
-365 J/kg
Mixed-layer LCL
802 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

353 
WUUS54 KSJT 212354
SVRSJT
TXC307-411-220045-
/O.NEW.KSJT.SV.W.0310.151021T2354Z-151022T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
654 PM CDT WED OCT 21 2015

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN MCCULLOCH COUNTY IN NORTH CENTRAL TEXAS...
  WEST CENTRAL SAN SABA COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 745 PM CDT

* AT 654 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ROCHELLE...
  OR NEAR BRADY...MOVING NORTHEAST AT 25 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  ROCHELLE AROUND 705 PM CDT.
  RICHLAND SPRINGS AROUND 745 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE US-
190 NEAR THE MCCULLOCH-SAN SABA COUNTY LINE AND HALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3100 9923 3114 9937 3138 9914 3122 9881
TIME...MOT...LOC 2354Z 229DEG 20KT 3113 9923 

HAIL...1.00IN
WIND...60MPH
 
$$
2 follow-up statements
256 
WWUS54 KSJT 220012
SVSSJT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
712 PM CDT WED OCT 21 2015

TXC307-411-220045-
/O.CON.KSJT.SV.W.0310.000000T0000Z-151022T0045Z/
MCCULLOCH TX-SAN SABA TX-
712 PM CDT WED OCT 21 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR EAST CENTRAL MCCULLOCH AND WEST CENTRAL SAN SABA COUNTIES...

AT 711 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER ROCHELLE...OR
9 MILES NORTHEAST OF BRADY...MOVING NORTHEAST AT 20 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

THIS SEVERE STORM WILL BE NEAR...
  PLACID AROUND 735 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE US-
190 NEAR THE MCCULLOCH-SAN SABA COUNTY LINE AND HALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3110 9919 3118 9933 3138 9914 3125 9887
TIME...MOT...LOC 0011Z 221DEG 17KT 3120 9920 

HAIL...1.00IN
WIND...60MPH
 
$$
360 
WWUS54 KSJT 220024
SVSSJT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
724 PM CDT WED OCT 21 2015

TXC307-411-220034-
/O.CAN.KSJT.SV.W.0310.000000T0000Z-151022T0045Z/
MCCULLOCH TX-SAN SABA TX-
724 PM CDT WED OCT 21 2015

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MCCULLOCH AND
WEST CENTRAL SAN SABA COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER SMALL HAIL....
GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
SAN ANGELO.

LAT...LON 3110 9919 3118 9933 3138 9914 3125 9887
TIME...MOT...LOC 0022Z 229DEG 20KT 3125 9913 

$$

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 21, 2:17 PM CDTFlash Flood WatchSJTBrown, Callahan, Coke, Coleman, Concho, Crockett and 18 more63 hr
Oct 21, 4:04 PM CDTAreal Flood AdvisorySJTKimble56 min
Oct 21, 5:18 PM CDTAreal Flood AdvisorySJTKimble, Mason, Menard57 min
Oct 21, 6:41 PM CDTSpecial Weather StatementSJTMcCulloch34 min

Nearby

Severe Thunderstorm Warnings in Texas, 2015Every severe thunderstorm warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.