Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 430, NWS Norman, OK

May 19, 2015Archer County, Clay County, Texas

NWS Norman, OK issued this severe thunderstorm warning at May 19, 2015, 10:49 PM CDT for Archer County, Clay County, Texas. It was in force for 41 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
May 19, 2015, 10:49 PM CDT (03:49 UTC)
Expired
May 19, 2015, 11:30 PM CDT
In force
41 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Archer County, TX, Clay County, TX

The radar

The Altus AFB radar (KFDR), 94 km from the middle of the area, began a volume at 03:48 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
May 19, 11:15 PM CDTHAIL 1.254 S Archer City, TX

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
May 19, 8:58 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 3.8 hours before the alert went out and 144 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 2015-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1306 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 2015-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 267 square meters per square second.193958Sfc1 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
1306 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
832 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
267 m²/s²
0-3 km storm-relative helicity
427 m²/s²
Significant tornado parameter
2.4
Supercell composite
26.2

Open this sounding in Storm Lab

The text

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

598 
WUUS54 KOUN 200349
SVROUN
TXC009-077-200430-
/O.NEW.KOUN.SV.W.0430.150520T0349Z-150520T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1049 PM CDT TUE MAY 19 2015

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN ARCHER COUNTY IN NORTHERN TEXAS...
  SOUTHWESTERN CLAY COUNTY IN NORTHERN TEXAS...

* UNTIL 1130 PM CDT

* AT 1049 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES
  SOUTHWEST OF ARCHER CITY...MOVING NORTHEAST AT 25 MPH.

  HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

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

* LOCATIONS IMPACTED INCLUDE...
  ARCHER CITY...SCOTLAND...WINDTHORST AND LAKE ARROWHEAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS.
 
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3353 9877 3382 9850 3374 9830 3357 9822
      3342 9867
TIME...MOT...LOC 0349Z 239DEG 21KT 3351 9868 

HAIL...1.25IN
WIND...60MPH
 
$$

AUSTIN
1 follow-up statement
160 
WWUS54 KOUN 200406
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1106 PM CDT TUE MAY 19 2015

TXC009-077-200430-
/O.CON.KOUN.SV.W.0430.000000T0000Z-150520T0430Z/
ARCHER TX-CLAY TX-
1106 PM CDT TUE MAY 19 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR EASTERN ARCHER AND SOUTHWESTERN CLAY COUNTIES...

AT 1106 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ARCHER
CITY...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. 

LOCATIONS IMPACTED INCLUDE...
ARCHER CITY...SCOTLAND...WINDTHORST AND LAKE ARROWHEAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS.

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

&&

LAT...LON 3356 9874 3381 9848 3374 9830 3358 9822
      3347 9855
TIME...MOT...LOC 0406Z 239DEG 21KT 3356 9858 

HAIL...1.00IN
WIND...60MPH
 
$$

AUSTIN

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 19, 7:06 PM CDTSevere Thunderstorm WarningOUNClay, Wichita39 min
May 19, 7:14 PM CDTSpecial Weather StatementOUNClay31 min
May 19, 7:27 PM CDTSevere Thunderstorm WarningOUNArcher, Clay48 min
May 19, 7:47 PM CDTSpecial Weather StatementOUNWilbarger43 min
May 19, 8:02 PM CDTSpecial Weather StatementOUNClay43 min
May 19, 8:17 PM CDTSevere Thunderstorm WarningOUNClay43 min
May 19, 8:28 PM CDTSpecial Weather StatementOUNWichita47 min
May 19, 8:58 PM CDTFlash Flood WarningOUNHardeman4 hr
May 19, 9:07 PM CDTSevere Thunderstorm WarningOUNWichita38 min
May 19, 9:09 PM CDTFlash Flood WarningOUNArcher, Baylor, Clay, Wichita, Wilbarger6 hr
May 19, 9:51 PM CDTSpecial Weather StatementOUNHardeman24 min
May 19, 10:10 PM CDTSevere Thunderstorm WarningOUNFoard, Hardeman, Wilbarger35 min
May 19, 10:43 PM CDTSevere Thunderstorm WarningOUNFoard, Hardeman, Wichita, Wilbarger47 min
May 19, 10:51 PM CDTSpecial Weather StatementOUNBaylor24 min
May 19, 10:59 PM CDTSpecial Weather StatementOUNWichita31 min
May 19, 11:30 PM CDTSevere Thunderstorm WarningOUNArcher, Clay45 min
May 19, 11:35 PM CDTSpecial Weather StatementOUNBaylor25 min
May 19, 11:57 PM CDTSevere Thunderstorm WarningOUNArcher, Baylor, Clay, Wichita78 min
May 20, 1:00 AM CDTAreal Flood WarningOUNFoard, Hardeman, Wichita, Wilbarger6 hr
May 20, 1:15 AM CDTSevere Thunderstorm WarningOUNClay15 min
May 20, 1:17 AM CDTSpecial Weather StatementOUNArcher, Baylor, Clay43 min
May 20, 2:05 AM CDTSpecial Weather StatementOUNArcher, Baylor, Clay25 min
May 20, 2:46 AM CDTSpecial Weather StatementOUNArcher, Baylor44 min
May 20, 2:59 AM CDTFlash Flood WarningOUNArcher, Baylor, Clay, Wichita, Wilbarger4 hr
May 20, 3:21 AM CDTRiver Flood WarningOUNClay, Wichita8 days
May 20, 3:32 AM CDTSpecial Weather StatementOUNBaylor43 min
May 20, 6:54 AM CDTAreal Flood WarningOUNArcher, Baylor, Clay, Foard, Wichita, Wilbarger8 hr
May 20, 5:57 PM CDTAreal Flood WarningOUNArcher, Baylor, Clay, Wichita, Wilbarger12 hr

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.