Alert archive / Texas / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 99, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Jun 13, 2009, 4:43 PM CDT for Collingsworth County, Donley 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
- Jun 13, 2009, 4:43 PM CDT (21:43 UTC)
- Expired
- Jun 13, 2009, 5:14 PM CDT
- In force
- 31 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
Counties Collingsworth County, TX, Donley County, TX
The radar
The Amarillo radar (KAMA), 110 km from the middle of the area, began a volume at 21:45 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 nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 9.7 hours before the alert went out and 109 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
- 862 J/kg
- Mixed-layer CIN
- -357 J/kg
- Mixed-layer LCL
- 1462 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 238 m²/s²
- 0-3 km storm-relative helicity
- 246 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 Jun 13, 2:57 PM CDT, 1 hour 46 minutes earlier.
Area forecast discussion, Jun 13, 2:57 PM CDT, 1 hour 46 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 257 PM CDT SAT JUN 13 2009 .DISCUSSION... FRONT REMAINS JUST SOUTH OF THE REGION. ACROSS THE REGION EASTERLY WINDS WILL KEEP DEW POINT TEMPERATURES GENERALLY IN THE 50 AND 60S THROUGH TODAY. HOWEVER...THERE IS A SUBSTANTIAL WARM LAYER BETWEEN 700 AND 800 MB...RESULTING IN LARGE VALUES OF CIN. HOWEVER...WITH TEMPERATURES ALREADY IN THE UPPER 80S ACROSS PORTIONS OF THE REGION...EXPECT THAT THUNDERSTORMS WILL EVENTUALLY DEVELOP BETWEEN 21 AND 00Z. WITH THE FRONT REMAINING NEARLY STATIONARY...EXPECT THAT THE CHANCES OF THUNDERSTORMS WILL CONTINUE THROUGH THE OVERNIGHT HOURS. WITH THE ONGOING CONVECTION...MOISTURE ADVECTION TOMORROW MORNING COULD BE NEGLIGIBLE. THEREFORE...EXPECT AT LEAST A LULL IN THUNDERSTORM ACTIVITY FOR A FEW HOURS TOMORROW MORNING. THERE REMAINS UNCERTAINTY WITH REGARDS TO THE WARM FRONT TOMORROW. WITH CONTINUED CONVECTION...THIS WOULD FAVOR THE FRONT REMAINING NEARLY STATIONARY. HOWEVER BOTH THE NAM AND GFS SHOW THE FRONT PUSHING BACK INTO THE OKLAHOMA PANHANDLE. IF THE FRONT DOES EDGE FURTHER NORTH...INCREASED MOISTURE ADVECTION...AND THUS INCREASED CHANCES OF PRECIPITATION WILL BE POSSIBLE. ANOTHER UPPER LEVEL SHORTWAVE TROUGH BRINGS A CHANCE OF THUNDERSTORMS MONDAY AND MONDAY NIGHT. FEW CHANGES MADE TO THE EXTENDED AS THERE REMAINS CONSIDERABLE UNCERTAINTY AS TO THE EVOLUTION OF THE UPPER LEVEL RIDGE AND PACIFIC LOW...ESPECIALLY TOWARDS THE END OF THE WEEK. SJOHNSON && .FIRE WEATHER... FIRE WEATHER CONCERNS WILL REMAIN LOW TO MODERATE THROUGH THE BEGINNING OF THE WEEK AS RELATIVE HUMIDITY VALUES WILL REMAIN ABOVE 20 PERCENT AND CHANCES OF PRECIPITATION CONTINUE THROUGH MONDAY. BY THE MIDDLE OF THE WEEK FIRE WEATHER CONDITIONS WILL INCREASE AS A WARMING TREND WILL RESULT IN MINIMUM RELATIVE HUMIDITY VALUES NEAR 15 PERCENT. SJOHNSON && .PRELIMINARY POINT TEMPS/POPS... AMARILLO TX 61 88 63 91 63 / 30 30 30 20 10 BEAVER OK 62 86 63 94 61 / 50 30 30 20 20 BOISE CITY OK 59 90 60 87 57 / 30 30 20 20 20 BORGER TX 65 88 67 90 65 / 40 30 30 20 10 BOYS RANCH TX 61 89 62 91 59 / 20 30 30 20 10 CANYON TX 60 89 61 93 62 / 30 30 30 20 10 CLARENDON TX 66 88 65 93 67 / 40 30 30 20 10 DALHART TX 59 89 57 91 57 / 20 30 20 20 10 GUYMON OK 63 87 64 88 62 / 50 30 30 20 20 HEREFORD TX 61 86 62 94 62 / 20 30 30 20 10 LIPSCOMB TX 65 86 66 90 63 / 50 30 30 20 20 PAMPA TX 64 86 67 90 65 / 50 30 30 20 10 SHAMROCK TX 68 87 67 94 67 / 50 30 30 20 10 WELLINGTON TX 69 92 68 95 68 / 50 30 30 20 10 && .AMA WATCHES/WARNINGS/ADVISORIES... TX...NONE. OK...NONE. && 03/16
Hazardous weather outlook, Jun 13, 1:00 PM CDT, 3 hours 43 minutes before
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</html>In the hours before
Special weather statement, Jun 13, 3:55 PM CDT, 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 355 PM CDT SAT JUN 13 2009 TXZ019-020-132200- COLLINGSWORTH TX-DONLEY TX- 355 PM CDT SAT JUN 13 2009 ...SIGNIFICANT WEATHER ALERT FOR STRONG THUNDERSTORM OVER DONLEY AND COLLINGSWORTH COUNTIES... AT 352 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE MONITORING A SEVERE THUNDERSTORM 51 MILES SOUTH OF LELIA LAKE...OR ABOUT 47 MILES SOUTHWEST OF MEMPHIS...MOVING NORTHEAST AT 25 MPH. THIS STORM WILL TRACK NORTH NORTHEAST TOWARDS DONLEY AND COLLINGSWORTH COUNTY AND IS CAPABLE OF PRODUCING VERY LARGE HAIL. RESIDENTS FROM CLARENDON TO WELLINGTON SHOULD CLOSELY MONITOR WEATHER RADIO OR OTHER MEDIA FOR OTHER UPDATES AND POSSIBLE WARNINGS. BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED. KIMBLE
Special weather statement, Jun 13, 4:20 PM CDT, 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 420 PM CDT SAT JUN 13 2009 TXZ017-018-132215- RANDALL TX-ARMSTRONG TX- 420 PM CDT SAT JUN 13 2009 ...STRONG THUNDERSTORM ACROSS ARMSTRONG AND RANDALL COUNTIES... AT 419 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 27 MILES SOUTH OF BUFFALO LAKE...OR ABOUT 22 MILES SOUTH OF HEREFORD...MOVING NORTHEAST AT 30 MPH. UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE. STORM INTENSITY IS INCREASING AND SEVERE WEATHER MAY DEVELOP RAPIDLY. BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED.
Special weather statement, Jun 13, 4:30 PM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 430 PM CDT SAT JUN 13 2009 TXZ019-020-132200- COLLINGSWORTH TX-DONLEY TX- 430 PM CDT SAT JUN 13 2009 ...SIGNIFICANT WEATHER ALERT FOR STRONG THUNDERSTORMS MOVING TOWARD DONLEY AND COLLINGSWORTH COUNTIES... AT 428 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 31 MILES SOUTHWEST OF HEDLEY...OR ABOUT 27 MILES SOUTHWEST OF MEMPHIS...MOVING NORTHEAST AT 30 MPH. UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE. HAIL UP TO THE SIZE OF BASEBALLS HAVE BEEN REPORTED IN QUITAQUE. STORM INTENSITY IS INCREASING AND SEVERE WEATHER MAY DEVELOP RAPIDLY. BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED.
The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 4:47 PM CDT | Severe Thunderstorm Warning | AMA | Randall | 23 min |
| Jun 13, 6:02 PM CDT | Severe Thunderstorm Warning | AMA | Carson, Potter | 58 min |
| Jun 13, 6:27 PM CDT | Severe Thunderstorm Warning | AMA | Armstrong, Donley | 44 min |
| Jun 13, 6:50 PM CDT | Severe Thunderstorm Warning | AMA | Hutchinson, Moore, Potter | 55 min |
| Jun 13, 6:53 PM CDT | Severe Thunderstorm Warning | AMA | Armstrong, Carson, Donley, Gray | 52 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2009Every severe thunderstorm warning in 2009
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.