Alert archive / Texas / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 119, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at May 21, 2007, 4:59 PM CDT for Hansford County, Texas. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 21, 2007, 4:59 PM CDT (21:59 UTC)
- Expired
- May 21, 2007, 5:30 PM CDT
- In force
- 31 min
- Issued by
- NWS Amarillo, TX
- Area
- Counties, with a storm outline in the text
County Hansford County, TX
The radar
The Amarillo radar (KAMA), 121 km from the middle of the area, began a volume at 22:02 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.
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 21, 4:06 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 10.0 hours before the alert went out and 121 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
- 25 J/kg
- Mixed-layer CIN
- -229 J/kg
- Mixed-layer LCL
- 1252 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 21, 4:11 PM CDT, 48 minutes earlier.
Area forecast discussion, May 21, 4:11 PM CDT, 48 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE AMARILLO TX 411 PM CDT MON MAY 21 2007 .UPDATE... SEVERE THUNDERSTORM WATCH WAS ISSUED FOR MOST OF THE PANHANDLES UNTIL 11 PM CDT. NUNEZ && .PREV DISCUSSION... /ISSUED 330 PM CDT MON MAY 21 2007/ DISCUSSION... THE NEXT COUPLE DAYS WILL BE QUITE ACTIVE WITH THE POTENTIAL FOR SEVERE WEATHER. AT THIS TIME...DRYLINE STRETCHED FROM NEAR A GUYMON TO BORDER TO CLOVIS LINE. ELEVATED STORMS HAVE BEEN DEVELOPING WEST OF THE DRYLINE FOR THE LAST ONE TO TWO HOURS...WHILE NEW DEVELOPMENT WAS ALREADY PRESENT ALONG AND IMMEDIATELY EAST OF THIS BOUNDARY. MOISTURE WAS DEEPENING EAST OF THE DRYLINE WHERE THE VERTICAL WIND PROFILES ARE EXPECTED TO BE FAVORABLE FOR ROTATING STORMS. A FEW STORMS COULD PRODUCE A TORNADO OR TWO...HOWEVER...THE PRIMARY THREAT WILL BE FROM LARGE HAIL AND DAMAGING WINDS. THERE IS A POTENTIAL FOR STORMS TO PRODUCE VERY HEAVY RAIN DUE TO SLOWER ESTIMATED STORM MOTION. ISOLATED FLOODING MAY OCCUR AS A RESULT. THE DRYLINE SHOULD RETREAT OVERNIGHT...PULLING THE MOISTURE WEST AGAIN. MODELS ATTEMPT TO PUSH THIS BOUNDARY TO FAR EAST ON TUESDAY GIVEN THE PLACEMENT OF THE SURFACE LOW. WITH THE DRYLINE STILL PRESENT SOMEWHERE IN THE WESTERN AND CENTRAL PARTS OF THE PANHANDLES...STRONG TO SEVERE THUNDERSTORMS ARE EXPECTED TO RETURN ON TUESDAY AND TUESDAY NIGHT WHEN ANOTHER DISTURBANCE LIFTS NORTHEAST. A COLD FRONT DIVES DOWN ON TUESDAY NIGHT...SETTING ANOTHER FOCUS FOR ORGANIZED THUNDERSTORMS FOR WEDNESDAY AND WEDNESDAY NIGHT WHEN A STRONGER UPPER LEVEL SYSTEM SLIDES OVER THE PANHANDLES. INCREASED POPS AREAWIDE WITH THE GREATER POTENTIAL FOR POST FRONTAL PRECIPITATION. COOLER TEMPERATURES AND DEWPOINTS ON WEDNESDAY SHOULD LIMIT THE SEVERE THREAT TO THE SOUTHEAST TEXAS PAHANDLES WHERE FRONTAL FORCING EXISTS. STORM ACTIVITY SHOULD COME TO LULL ON THURSDAY BETWEEN WEATHER SYSTEMS. BY FRIDAY...SURFACE LOW DEVELOPS OVER THE SOUTHERN HIGH PLAINS AND MOISTURE BEGINS ITS SURGE BACK INTO THE PANHANDLES. WITH SOUTHWEST FLOW PERSISTING THROUGH MEMORIAL DAY WEEKEND...STORMS COULD REDEVELOP EACH DAY WHEN UPPER LEVEL DISTURBANCES TRACK OVERHEAD. MAINTAIN LOW POPS FOR NOW. NUNEZ && .AMA WATCHES/WARNINGS/ADVISORIES... TX...NONE. OK...NONE. && 04/08
Hazardous weather outlook, May 21, 4:25 PM CDT, 34 minutes before
TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE AMARILLO TX 425 PM CDT MON MAY 21 2007 OKZ001>003-TXZ001>020-221100- ARMSTRONG-BEAVER-CARSON-CIMARRON-COLLINGSWORTH-DALLAM-DEAF SMITH- DONLEY-GRAY-HANSFORD-HARTLEY-HEMPHILL-HUTCHINSON-LIPSCOMB-MOORE- OCHILTREE-OLDHAM-POTTER-RANDALL-ROBERTS-SHERMAN-TEXAS-WHEELER- 425 PM CDT MON MAY 21 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA PANHANDLES. .DAY ONE... SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THE TEXAS AND OKLAHOMA PANHANDLES TONIGHT...WITH MOST OF THE RAIN FALLING IN THE SOUTHEASTERN TEXAS PANHANDLE. ISOLATED THUNDERSTORMS MAY BECOME STRONG WITH HEAVY RAIN AND GUSTY WINDS...HOWEVER NO ADDITIONAL SEVERE WEATHER IS EXPECTED AT THIS TIME. IN ADDITION...CAUTION IS ADVISED ON AREA LAKES THIS AFTERNOON AND TONIGHT AS A RESULT OF STRONG SOUTHERLY WINDS OF 20 TO 30 MPH WITH HIGHER GUSTS. .DAYS TWO THROUGH SEVEN... SEVERE THUNDERSTORMS WILL BE POSSIBLE AGAIN ON TUESDAY AFTERNOON AND EVENING MAINLY OVER THE EASTERN TEXAS AND OKLAHOMA PANHANDLES. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY THREATS...BUT ISOLATED TORNADOES WILL ALSO BE A POSSIBILITY. THUNDERSTORMS WILL BE POSSIBLE ON WEDNESDAY AND WEDNESDAY NIGHT ACROSS THE PANHANDLES AREA...BUT AT THIS TIME...SEVERE WEATHER IS NOT ANTICIPATED. MORE THUNDERSTORMS ARE EXPECTED INTO THE MEMORIAL DAY WEEKEND AS ANOTHER UPPER DISTURBANCE AFFECTS THE SOUTHERN PLAINS. AT THIS TIME...IT APPEARS A FEW STORMS MAY APPROACH SEVERE LEVELS. .SPOTTER INFORMATION STATEMENT... SPOTTERS AND EMERGENCY MANAGEMENT ORGANIZATIONS SHOULD MONITOR THE FORECAST FOR TUESDAY AND TUESDAY NIGHT FOR POSSIBLE ACTIVATION. HENNIG
In the hours before
Special weather statement, May 21, 3:54 PM CDT, 1 hour 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 354 PM CDT MON MAY 21 2007 TXZ006-212130- HARTLEY TX- 354 PM CDT MON MAY 21 2007 ...STRONG THUNDERSTORM IN SOUTHEASTERN HARTLEY COUNTY... AT 354 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 9 MILES NORTHWEST OF CHANNING MOVING SOUTHEAST AT 10 MPH. ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE. KRAMAR
Special weather statement, May 21, 4:12 PM CDT, 47 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 412 PM CDT MON MAY 21 2007 OKZ002-003-TXZ003-004-212145- BEAVER OK-HANSFORD TX-OCHILTREE TX-TEXAS OK- 412 PM CDT MON MAY 21 2007 ...STRONG THUNDERSTORM IN SOUTHWESTERN BEAVER...SOUTHEASTERN TEXAS... NORTHEASTERN HANSFORD AND NORTHWESTERN OCHILTREE COUNTIES... AT 412 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 18 MILES SOUTHWEST OF GRAY MOVING NORTHEAST AT 15 MPH. ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE. RESIDENTS OF THE NORTHEASTERN TEXAS PANHANDLE AND EASTERN OKLAHOMA PANHANDLE SHOULD MONITOR THE WEATHER SITUATION AND LISTEN FOR POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. KRAMAR
Special weather statement, May 21, 4:22 PM CDT, 37 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 422 PM CDT MON MAY 21 2007 TXZ002-212145- SHERMAN TX- 422 PM CDT MON MAY 21 2007 ...STRONG THUNDERSTORM IN EASTERN SHERMAN COUNTY... AT 422 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER SOUTH CENTRAL SHERMAN COUNTY 5 MILES NORTHWEST OF SUNRAY...MOVING NORTHEAST AT 25 MPH. ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE. KRAMAR
Special weather statement, May 21, 4:36 PM CDT, 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 436 PM CDT MON MAY 21 2007 TXZ007-212200- MOORE TX- 436 PM CDT MON MAY 21 2007 ...LINE OF STRONG THUNDERSTORMS IN MOORE COUNTY... AT 436 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS FROM SUNRAY TO 9 MILES WEST OF FOUR WAY MOVING EAST AT 35 MPH. THIS LINE OF STORMS WILL BE PRECEDED BY A GUST FRONT WITH WINDS TO 50 MPH. ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE WITH THE STORMS AS WELL. KRAMAR
Special weather statement, May 21, 4:40 PM CDT, 19 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 440 PM CDT MON MAY 21 2007 OKZ002-212215- TEXAS OK- 440 PM CDT MON MAY 21 2007 ...STRONG THUNDERSTORM IN SOUTHEASTERN TEXAS COUNTY... AT 440 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 6 MILES SOUTH OF HARDESTY MOVING NORTHEAST AT 25 MPH. ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE. RESIDENTS OF SOUTHEASTERN TEXAS COUNTY...INCLUDING THE CITY OF HARDESTY...SHOULD MONITOR THE WEATHER SITUATION AND LISTEN FOR POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE IN AMARILLO. KRAMAR
Special weather statement, May 21, 4:43 PM CDT, 16 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 443 PM CDT MON MAY 21 2007 TXZ002-003-212215- HANSFORD TX-SHERMAN TX- 443 PM CDT MON MAY 21 2007 ...STRONG THUNDERSTORM IN NORTHWESTERN HANSFORD AND SOUTHEASTERN SHERMAN COUNTIES... AT 443 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 8 MILES NORTHWEST OF GRUVER MOVING NORTHEAST AT 35 MPH. A SECOND STORM WAS LOCATED 10 MILES WEST OF MORSE...ALSO MOVING NORTHEAST AT 35 MPH. ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE. RESIDENTS OF SOUTHEASTERN SHERMAN AND NORTHWESTERN HANSFORD COUNTIES...INCLUDING THE CITY OF GRUVER...SHOULD LISTEN FOR POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE IN AMARILLO. KRAMAR
The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 5:28 PM CDT | Severe Thunderstorm Warning | AMA | Hansford | 36 min |
| May 21, 5:37 PM CDT | Severe Thunderstorm Warning | AMA | Hutchinson | 53 min |
| May 21, 5:56 PM CDT | Severe Thunderstorm Warning | AMA | Ochiltree, Roberts | 64 min |
| May 21, 6:31 PM CDT | Severe Thunderstorm Warning | AMA | Hutchinson | 59 min |
| May 21, 6:35 PM CDT | Severe Thunderstorm Warning | AMA | Deaf Smith, Randall | 55 min |
| May 21, 5:14 PM CDT | Severe Thunderstorm Warning | AMA | Texas | 61 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2007Every severe thunderstorm warning in 2007
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.