Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 285, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Sep 3, 2009, 6:16 PM CDT for Cimarron County, Texas County, Oklahoma. It was in force for 89 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
- Sep 3, 2009, 6:16 PM CDT (23:16 UTC)
- Expired
- Sep 3, 2009, 7:45 PM CDT
- In force
- 89 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
Counties Cimarron County, OK, Texas County, OK
The radar
The Amarillo radar (KAMA), 170 km from the middle of the area, began a volume at 23:18 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
Dodge City, (KDDC), launched 12:00Z, 11.3 hours before the alert went out and 218 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
- 46 J/kg
- Mixed-layer CIN
- -414 J/kg
- Mixed-layer LCL
- 769 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 46 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 Sep 3, 5:18 PM CDT, 58 minutes earlier.
Area forecast discussion, Sep 3, 5:18 PM CDT, 58 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE AMARILLO TX 518 PM CDT THU SEP 3 2009 .AVIATION... SHOWERS AND THUNDERSTORMS LOOK TO BE A PRETTY GOOD BET ACROSS THE TAF SITES TONIGHT. MCS OVER SOUTHEAST COLORADO DROPPING SOUTHWARD IS BEING AIDED BY AN UPPER LEVEL TROUGH AND SURFACE CONFLUENCE ALONG A COLD FRONT. WILL END THE SHOWERS AND STORMS FROM NORTH TO SOUTH THROUGH THE EARLY MORNING HOURS. SOME OF THE STORMS MAY GET STRONG TONIGHT WITH HAIL...STRONG WINDS AND VERY HEAVY RAIN. WINDS WILL BE VARIABLE AS THIS COMPLEX OF STORMS MOVES THROUGH THE AREA...BUT WINDS SHOULD END UP NORTHEAST OR EAST BY MID DAY FRIDAY. SKIES WILL REMAIN VFR OUTSIDE OF THUNDERSTORMS. && .PREV DISCUSSION... /ISSUED 352 PM CDT THU SEP 3 2009/ DISCUSSION... LATEST CROP OF SHOWERS AND TSTMS FORMING IN PARTS OF THE FCST AREA AND HIGHER TERRAIN OF NERN NM AND SERN CO. WENT WITH SCT AREAL QUALIFIERS TONIGHT ALL SECTIONS BASED ON CURRENT TRENDS. OTHERWISE...LINGERING FRONTAL BOUNDARY ALONG WITH FAVORABLE UPPER LEVEL FLOW PATTERN FEATURING NW FLOW TRANSITIONING TO SW FLOW EARLY NEXT WEEK PLUS SUFFICIENT MOISTURE SUGGESTS RETAINING AT LEAST SLGT CHC POPS NEARLY EVERY PERIOD OF THIS PCKG AFTER TONIGHT. BOTH 12Z GFS AND 12Z ECMWF CONTINUE TO BRING ANOTHER COLD FRONT THRU THE FCST AREA SOMETIME WED OR WED EVENING...JUSTIFYING POPS DURG THIS TIME FRAME. LEFT NEXT THURSDAY DRY FOR NOW BUT MEDIUM RANGE MODELS MAINTAIN THE GENERAL WET PATTERN ON THAT DAY AS WELL. OVERALL...MAINTAINED INTEGRITY OF PREVIOUS PCKG WITH ONLY MINOR ADJUSTMENTS MADE AT BEST. ANDRADE FIRE WEATHER... NO MAJOR FIRE WEATHER CONCERNS ANTICIPATED NEXT SEVERAL DAYS. ANDRADE && .AMA WATCHES/WARNINGS/ADVISORIES... TX...NONE. OK...NONE. && 15/05
Hazardous weather outlook, Sep 3, 2:59 PM CDT, 3 hours 17 minutes before
TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AMARILLO TX 259 PM CDT THU SEP 3 2009 OKZ001>003-TXZ001>020-041100- ARMSTRONG-BEAVER-CARSON-CIMARRON-COLLINGSWORTH-DALLAM-DEAF SMITH- DONLEY-GRAY-HANSFORD-HARTLEY-HEMPHILL-HUTCHINSON-LIPSCOMB-MOORE- OCHILTREE-OLDHAM-POTTER-RANDALL-ROBERTS-SHERMAN-TEXAS-WHEELER- 259 PM CDT THU SEP 3 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA PANHANDLES. .DAY ONE... THUNDERSTORMS WILL BE POSSIBLE THROUGH TONIGHT ACROSS THE OKLAHOMA AND TEXAS PANHANDLES. SOME THUNDERSTORMS MAY BECOME STRONG TO MARGINALLY SEVERE...WITH LARGE HAIL AND DAMAGING WINDS THE MAIN THREATS. VERY HEAVY RAINFALL MAY ALSO LEAD TO LOCALIZED FLOODING OR FLASH FLOODING. .DAYS TWO THROUGH SEVEN... THERE IS A SLIGHT CHANCE TO CHANCE OF THUNDERSTORMS ACROSS ALL OF THE OKLAHOMA AND TEXAS PANHANDLES FRIDAY AFTERNOON THROUGH WEDNESDAY NIGHT. SOME OF THE STORMS THAT FORM MAY BECOME MARGINALLY SEVERE... WITH LARGE HAIL AND DAMAGING WINDS THE PRIMARY THREATS. IN ADDITION...HEAVY RAIN WILL BE POSSIBLE...WHICH MAY RESULT IN LOCALIZED FLOODING OR FLASH FLOODING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. BROST
In the hours before
Special weather statement, Sep 3, 4:33 PM CDT, 1 hour 43 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 433 PM CDT THU SEP 3 2009 TXZ006-011-032200- HARTLEY TX-OLDHAM TX- 433 PM CDT THU SEP 3 2009 ...SIGNIFICANT WEATHER ADVISORY... THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 500 PM CDT FOR OLDHAM AND HARTLEY COUNTIES. AT 431 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 13 MILES WEST OF CHANNING...MOVING SOUTH AT 5 MPH. UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE. HEAVY RAINFALL MAY RESULT IN LOCALIZED FLOODING OF LOW LYING AND POOR DRAINAGE AREAS. AVOID NORMAL FLOOD-PRONE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. LG
Special weather statement, Sep 3, 5:51 PM CDT, 25 minutes before
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Severe Thunderstorm Warnings in Oklahoma, 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.