Alert archive / Texas / Tornado Warnings in 2010

Tornado Warning 21, NWS Shreveport, LA

April 23, 2010Cherokee County, Rusk County, Texas

NWS Shreveport, LA issued this tornado warning at Apr 23, 2010, 8:42 PM CDT for Cherokee County, Rusk County, Texas. It was in force for 48 min. 1 report 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
Apr 23, 2010, 8:42 PM CDT (01:42 UTC)
Expired
Apr 23, 2010, 9:30 PM CDT
In force
48 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon

Counties Cherokee County, TX, Rusk County, TX

The radar

The Shreveport radar (KSHV), 116 km from the middle of the area, began a volume at 01:44 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
Apr 23, 8:50 PM CDTHAIL 0.88New Summerfield, TXNICKLE SIZE HAIL REPORTED IN THE TOWN OF NEW SUMMERFIELD TEXAS.

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

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 23, 5:41 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 1.7 hours before the alert went out and 125 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, Shreveport, LA at 00:00Z on 2010-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2092 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, Shreveport, LA at 00:00Z on 2010-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 155 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
2092 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
810 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
1.6
Supercell composite
8.6

Open this sounding in Storm Lab

The text

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

747 
WFUS54 KSHV 240142
TORSHV
TXC073-401-240230-
/O.NEW.KSHV.TO.W.0021.100424T0142Z-100424T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
842 PM CDT FRI APR 23 2010

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CHEROKEE COUNTY IN NORTHEAST TEXAS...
  THIS INCLUDES THE CITY OF JACKSONVILLE...
  SOUTHWESTERN RUSK COUNTY IN NORTHEAST TEXAS...
  THIS INCLUDES THE CITY OF HENDERSON...

* UNTIL 930 PM CDT

* AT 842 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES         
  NORTHWEST OF GALLATIN...OR 6 MILES SOUTHEAST OF                    
  JACKSONVILLE...MOVING NORTHEAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW
  SALEM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER TO PING PONG BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE 
WINDS.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3220 9481 3194 9468 3179 9523 3203 9532
TIME...MOT...LOC 0142Z 245DEG 31KT 3191 9516

$$

15
1 follow-up statement
056 
WWUS54 KSHV 240217
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
917 PM CDT FRI APR 23 2010

TXC073-240225-
/O.CAN.KSHV.TO.W.0021.000000T0000Z-100424T0230Z/
CHEROKEE TX-
917 PM CDT FRI APR 23 2010

...THE TORNADO WARNING FOR CHEROKEE COUNTY IS CANCELLED...

THE SEVERE THUNDERSTORM THAT PROMPTED THE EARLIER TORNADO WARNING 
HAS MOVED EAST OUT OF CHEROKEE COUNTY. THUS...THE TORNADO WARNING 
HAS BEEN CANCELLED.

LAT...LON 3193 9498 3213 9499 3220 9481 3194 9468
TIME...MOT...LOC 0215Z 245DEG 31KT 3203 9486

$$

TXC401-240230-
/O.CON.KSHV.TO.W.0021.000000T0000Z-100424T0230Z/
RUSK TX-
917 PM CDT FRI APR 23 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR RUSK
COUNTY...

AT 915 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO 
TRACK A TORNADO.  THIS TORNADO WAS LOCATED 5 MILES NORTHEAST OF NEW 
SALEM...OR 15 MILES SOUTHWEST OF HENDERSON...MOVING NORTHEAST AT 
35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
LANEVILLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3193 9498 3213 9499 3220 9481 3194 9468
TIME...MOT...LOC 0215Z 245DEG 31KT 3203 9486

$$

15

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 23, 7:30 PM CDTTornado WarningSHVCass45 min
Apr 23, 8:32 PM CDTSevere Thunderstorm WarningSHVCherokee, Rusk58 min
Apr 23, 8:47 PM CDTSevere Thunderstorm WarningSHVAngelina, Cherokee, Nacogdoches40 min
Apr 24, 1:57 AM CDTSevere Thunderstorm WarningSHVSmith, Wood63 min
Apr 24, 2:27 AM CDTTornado WarningSHVWood19 min
Apr 24, 2:41 AM CDTSevere Thunderstorm WarningSHVCamp, Franklin, Gregg, Morris, Titus, Upshur49 min
Apr 24, 3:06 AM CDTLake Wind AdvisorySHVAngelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more18 hr
Apr 24, 3:14 AM CDTSevere Thunderstorm WarningSHVBowie, Cass, Harrison, Marion, Red River46 min
Apr 24, 7:43 AM CDTSevere Thunderstorm WarningSHVSabine47 min

Nearby

Tornado Warnings in Texas, 2010Every tornado warning in 2010Tornadoes in 2010

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.