Alert archive / Arkansas / Special Weather Statements in 2009
Special Weather Statement, NWS Tulsa, OK
NWS Tulsa, OK issued this special weather statement at Jul 20, 2009, 3:44 PM CDT for Benton County, Arkansas. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 20, 2009, 3:44 PM CDT (20:44 UTC)
- Expired
- Jul 20, 2009, 4:30 PM CDT
- In force
- 46 min
- Issued by
- NWS Tulsa, OK
County Benton County, AR
The radar
The Springfield radar (KSGF), 115 km from the middle of the area, began a volume at 20:46 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
Springfield, MO (KSGF), launched 12:00Z, 8.7 hours before the alert went out and 65 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
- 428 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 790 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 220 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.6
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tulsa, OK wrote its last area forecast discussion before this special weather statement went out at Jul 20, 3:19 PM CDT, 25 minutes earlier.
Area forecast discussion, Jul 20, 3:19 PM CDT, 25 minutes before
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</html>Hazardous weather outlook, Jul 20, 1:06 PM CDT, 2 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 106 PM CDT MON JUL 20 2009 ARZ001-002-010-011-019-020-029-OKZ049-053>076-211000- ADAIR OK-BENTON AR-CARROLL AR-CHEROKEE OK-CHOCTAW OK-CRAIG OK- CRAWFORD AR-CREEK OK-DELAWARE OK-FRANKLIN AR-HASKELL OK-LATIMER OK- LE FLORE OK-MADISON AR-MAYES OK-MCINTOSH OK-MUSKOGEE OK-NOWATA OK- OKFUSKEE OK-OKMULGEE OK-OSAGE OK-OTTAWA OK-PAWNEE OK-PITTSBURG OK- PUSHMATAHA OK-ROGERS OK-SEBASTIAN AR-SEQUOYAH OK-TULSA OK-WAGONER OK- WASHINGTON OK-WASHINGTON AR- 106 PM CDT MON JUL 20 2009 THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS MUCH OF EASTERN OKLAHOMA. .DAY ONE...THIS AFTERNOON AND TONIGHT. SEVERE THUNDERSTORM. RISK...ELEVATED. AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. ONSET...LATE AFTERNOON/EVENING AND AGAIN OVERNIGHT. FLASH FLOOD. RISK...ELEVATED. AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. ONSET...OVERNIGHT. HEAVY RAIN. RISK...ELEVATED. AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. ONSET...OVERNIGHT. DISCUSSION... SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE ACROSS THE AREA THIS AFTERNOON AND EVENING IN THE VICINITY OF OUTFLOW BOUNDARIES AND A WEAK FRONTAL BOUNDARY THAT IS CURRENTLY SET UP ACROSS NORTHWEST ARKANSAS. ANY OF THESE STORMS COULD BECOME STRONG TO SEVERE AS THE AIRMASS ACROSS THE AREA CONTINUES TO DESTABILIZE. LARGE HAIL AND STRONG GUSTY WINDS WILL BE THE CONCERN. ADDITIONAL THUNDERSTORMS ARE EXPECTED LATER TONIGHT AS A THUNDERSTORM COMPLEX DEVELOPS ACROSS KANSAS AND MOVES INTO THE AREA. SEVERE THUNDERSTORMS WILL BE POSSIBLE ALONG THE LEADING EDGE OF THIS COMPLEX WITH STRONG WINDS THE PRIMARY CONCERN. HEAVY RAIN WILL ALSO BE POSSIBLE LATE TONIGHT AS THE THUNDERSTORM COMPLEX ROLLS ACROSS THE REGION. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... ACTIVATION OF THE REGIONAL SPOTTER NETWORK LIKELY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. TUESDAY...THUNDERSTORM POTENTIAL...HEAVY RAIN POTENTIAL. WEDNESDAY...NO HAZARDS. THURSDAY...NO HAZARDS. FRIDAY...NO HAZARDS. SATURDAY...THUNDERSTORM POTENTIAL. SUNDAY...THUNDERSTORM POTENTIAL. EXTENDED DISCUSSION... STRONG THUNDERSTORMS WITH HEAVY RAIN AND THE POTENTIAL TO PRODUCE SEVERE WEATHER WILL LIKELY BE ONGOING TUESDAY MORNING. HOWEVER...THE EXPECTED THUNDERSTORM COMPLEX WILL WIND DOWN AND GRADUALLY MOVE OUT OF THE AREA AS THE MORNING PROGRESSES. THUNDERSTORM CHANCES WILL END BY LATE TUESDAY AFTERNOON. WEAK HIGH PRESSURE WILL BE IN CONTROL DURING THE REMAINDER OF THE WORK WEEK. BELOW NORMAL TEMPERATURES WILL GRADUALLY WARM TO SEASONAL LEVELS BEFORE THE NEXT FRONT ARRIVES LATE SATURDAY OR SUNDAY. THUNDERSTORMS ENTER THE FORECAST AGAIN THIS WEEKEND. WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.
In the hours before
Special weather statement, Jul 20, 1:23 PM CDT, 2 hours 21 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
123 PM CDT MON JUL 20 2009
ARZ002-201900-
CARROLL AR-
123 PM CDT MON JUL 20 2009
...SIGNIFICANT WEATHER ALERT...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 200 PM CDT
FOR THE FOLLOWING COUNTY...
IN NORTHWEST ARKANSAS
SOUTHEASTERN CARROLL
AT 123 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
METALTON...MOVING SOUTHEAST AT 10 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...OSAGE...DRYFORK...DELMAR...
METALTON...RUDD...CONNOR...CARROLLTON AND RULE.
THIS STORM WILL BE CAPABLE OF PRODUCING ONE HALF HAIL AND WIND GUSTS
TO 45 MPH.
LAT...LON 3613 9354 3615 9355 3615 9357 3616 9358
3619 9357 3619 9359 3627 9361 3629 9330
3613 9329
TIME...MOT...LOC 1823Z 314DEG 8KT 3622 9352Special weather statement, Jul 20, 2:01 PM CDT, 1 hour 43 minutes before
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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
311 PM CDT MON JUL 20 2009
ARZ001-010-011-202045-
BENTON AR-MADISON AR-WASHINGTON AR-
311 PM CDT MON JUL 20 2009
...SIGNIFICANT WEATHER ALERT...CORRECTED FOR DUPLICATE WORDING...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 345 PM CDT
FOR THE FOLLOWING COUNTIES...
IN NORTHWEST ARKANSAS
NORTHEASTERN WASHINGTON...SOUTHEASTERN BENTON AND NORTHWESTERN
MADISON
AT 302 PM CDT...DOPPLER RADAR INDICATED A CLUSTER OF STRONG
THUNDERSTORMS IN EASTERN WASHINGTON AND NORTHWEST MADISON COUNTIES
IN ARKANSAS. A COUPLE OF THE LARGER STORMS WERE LOCATED JUST EAST OF
FAYETTEVILLE AND JUST NORTH OF MAYFIELD. STORM MOVEMENT WAS SOMEWHAT
ERRATIC AT GENERALLY LESS THAN 5 MILES HOUR. THIS WILL LEAD TO
LOCALLY HEAVY RAINFALL IN EXCESS OF TWO INCHES...IN LESS THAN AN
HOURS TIME...IN PARTS OF EASTERN WASHINGTON COUNTY AND NORTHWEST
MADISON COUNTY.
THESE STORMS WILL ALSO BE CAPABLE OF PRODUCING SMALL HAIL AND GUSTY
WINDS TO 40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN
CASE THE SIGNIFICANT WEATHER ALERT IS UPGRADED TO A SEVERE THUNDERSTORM
OR FLASH FLOOD WARNING.
LAT...LON 3624 9379 3597 9402 3603 9416 3625 9406
TIME...MOT...LOC 2002Z 129DEG 3KT 3625 9403 3606 9413Special weather statement, Jul 20, 3:44 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
344 PM CDT MON JUL 20 2009
ARZ001-202130-
BENTON AR-
344 PM CDT MON JUL 20 2009
...SIGNIFICANT WEATHER ALERT...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 430 PM CDT
FOR THE FOLLOWING COUNTY...
IN NORTHWEST ARKANSAS
CENTRAL BENTON
AT 340 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 2 MILES
SOUTHEAST OF VAUGHN...MOVING SLOWLY NORTHEAST. OTHER THUNDERSTORMS
WERE ALSO FORMING OVER THE NORTHEAST HALF OF BENTON COUNTY.
SOME LOCATIONS THAT MAY BE AFFECTED BY THESE STORMS INCLUDE...ROCKY
COMFORT...MILLER...HILL TOP...BENTONVILLE...ROGERS...PEA
RIDGE...HEALING SPRINGS...CAVE SPRINGS...VAUGHN...CENTERTON...AVOCA
AND BELLA VISTA.
THESE STORMS WILL BE CAPABLE OF PRODUCING LOCAL RAINFALL AMOUNTS
IN EXCESS OF 2 INCHES IN AN HOURS TIME. SMALL HAIL AND WIND GUSTS
TO 40 MPH WILL ALSO BE POSSIBLE. RESIDENTS IN THESE AREAS SHOULD REMAIN
ALERT IN CASE THE SIGNIFICANT WEATHER ALERT IS UPGRADED TO A
FLASH FLOOD WARNING.
LAT...LON 3650 9393 3621 9422 3621 9434 3650 9429
TIME...MOT...LOC 2040Z 211DEG 4KT 3630 9427The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 6:22 PM CDT | Special Weather Statement | TSA | Sequoyah | 23 min |
| Jul 20, 12:36 PM CDT | Special Weather Statement | TSA | Madison | 39 min |
| Jul 20, 12:40 PM CDT | Special Weather Statement | TSA | Madison | 35 min |
| Jul 20, 1:23 PM CDT | Special Weather Statement | TSA | Carroll | 37 min |
| Jul 20, 1:27 PM CDT | Severe Thunderstorm Warning | TSA | Carroll | 36 min |
| Jul 20, 2:01 PM CDT | Special Weather Statement | TSA | Madison | 44 min |
| Jul 20, 2:41 PM CDT | Special Weather Statement | TSA | Madison | 34 min |
| Jul 20, 3:08 PM CDT | Special Weather Statement | TSA | Madison | 37 min |
| Jul 20, 3:11 PM CDT | Special Weather Statement | TSA | Madison | 34 min |
Nearby
Special Weather Statements in Arkansas, 2009Every special weather statement 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.