Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 21, NWS Amarillo, TX

May 6, 2008Armstrong County, Potter County, Randall County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 6, 2008, 11:54 PM CDT for Armstrong County, Potter County, Randall County, Texas. It was in force for 66 min. 3 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: May 6, 2008, 11:54 PM CDT (04:54 UTC)
Expired: May 7, 2008, 1:00 AM CDT
In force: 66 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon

Counties Armstrong County, TX, Potter County, TX, Randall County, TX

The radar

The Amarillo radar (KAMA), 28 km from the middle of the area, began a volume at 04:58 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

Time	Report	Where	Remark
May 7, 12:09 AM CDT	TSTM WND GST 60	6 Wsw Amarillo, TX	45TH AND BELL
May 7, 12:09 AM CDT	NON-TSTM WND GST 60	Amarillo, TX	45TH AND BELL
May 7, 12:11 AM CDT	NON-TSTM WND GST 62	6 Ene Amarillo, 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.

Issued	Product	Office	Lasted
May 6, 9:51 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.9 hours before the alert went out and 27 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1354 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1336 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KAMA 070456
SVRAMA
TXC011-375-381-070600-
/O.NEW.KAMA.SV.W.0021.080507T0454Z-080507T0600Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
1154 PM CDT TUE MAY 6 2008

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ARMSTRONG COUNTY IN THE PANHANDLE OF TEXAS
  SOUTHEASTERN POTTER COUNTY IN THE PANHANDLE OF TEXAS
  RANDALL COUNTY IN THE PANHANDLE OF TEXAS

* UNTIL 100 AM CDT

* AT 1153 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE           
  EXTENDING FROM WAYSIDE TO 11 MILES WEST OF WAYSIDE...MOVING        
  NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WAYSIDE...
  PALO DURO CANYON...
  LAKE TANGLEWOOD...
  AMARILLO...
  CLAUDE...
  CANYON...

TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE
AT 8 0 6 3 3 5 1 1 2 1.

LAT...LON 3476 10120 3477 10203 3527 10203 3526 10167
      3519 10163 3508 10121
TIME...MOT...LOC 0454Z 236DEG 24KT 3481 10147 3479 10174

$$


JJB

1 follow-up statement

000 
WWUS54 KAMA 070522
SVSAMA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1219 AM CDT WED MAY 7 2008

TXC011-375-381-070600-
/O.CON.KAMA.SV.W.0021.000000T0000Z-080507T0600Z/
POTTER TX-RANDALL TX-ARMSTRONG TX-
1219 AM CDT WED MAY 7 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR ARMSTRONG...RANDALL AND SOUTHEASTERN POTTER COUNTIES...

AT 1216 AM CDT...A LINE OF SEVERE THUNDERSTORMS PRODUCED DAMAGING 
WINDS IN EXCESS OF 60 MPH. THESE SOUTHERLY WINDS WILL CAUSE 
DANGEROUS DRIVING CONDITIONS ESPECIALLY ALONG EAST TO WEST ROADS 
WHERE STRONG CROSS WINDS WILL OCCUR. MOTORISTS SHOULD USE EXTREME 
CAUTION WHILE DRIVING THIS MORNING. 

* LOCATIONS IMPACTED INCLUDE...
  CLAUDE...
  AMARILLO...
  WAYSIDE...
  PALO DURO CANYON...
  LAKE TANGLEWOOD...
  TIMBERCREEK CANYON...
  CANYON...

DAMAGING WINDS UP TO 65 MPH WERE REPORTED IN AMARILLO WITH THIS 
STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY 
FROM WINDOWS.

TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE
AT 8 0 6 3 3 5 1 1 2 1.

LAT...LON 3476 10120 3477 10203 3527 10203 3526 10167
      3519 10163 3508 10121
TIME...MOT...LOC 0519Z 236DEG 24KT 3490 10130 3488 10157

$$


JJB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 12:15 AM CDT	High Wind Warning	AMA	Carson, Potter	5 hr
May 7, 7:06 AM CDT	Areal Flood Advisory	AMA	Potter, Randall	2 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2008 Every severe thunderstorm warning in 2008

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.