Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 143, NWS Tulsa, OK

June 27, 2010Nowata County, Washington County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 27, 2010, 5:51 PM CDT for Nowata County, Washington County, Oklahoma. It was in force for 39 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 27, 2010, 5:51 PM CDT (22:51 UTC)
Expired: Jun 27, 2010, 6:30 PM CDT
In force: 39 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Nowata County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 67 km from the middle of the area, began a volume at 22:53 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, 10.9 hours before the alert went out and 175 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: 1247 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 986 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 209 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.7

Open this sounding in Storm Lab

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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 27, 3:04 PM CDT, 2 hours 47 minutes earlier.

Area forecast discussion, Jun 27, 3:04 PM CDT, 2 hours 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
304 PM CDT SUN JUN 27 2010

.DISCUSSION...
19Z SFC ANALYSIS INDICATES THE COLD FRONT WAS LOCATED JUST TO THE
NW OF OUR CWA. SATELLITE AND RADAR TRENDS SUGGEST CONVECTION IS
BEGINNING TO REDEVELOP ALONG/AHEAD OF FRONTAL BOUNDARY IN VERY
MOIST AND MODERATELY UNSTABLE AIR MASS. LATEST MESOANALYSES
SUGGEST WEAK CIN EXISTS ACROSS THE AREA SO CONVECTION SHOULD
INCREASE OVER NEXT FEW HOURS OVER NERN OK. WIND SHEAR IS WEAK BUT
GIVEN THE INSTABILITY PRESENT...THE STRONGEST STORMS THIS
AFTERNOON/EVENING COULD PRODUCE DAMAGING WIND GUSTS AND POSSIBLY
SOME LARGE HAIL. SLOW CELL MOVEMENT AND HIGH PRECIPITABLE WATER
VALUES WILL ALSO YIELD SOME LOCALLY HEAVY RAINFALL OVERNIGHT.
CONTINUED CATEGORICAL/LIKELY POPS TONIGHT ACROSS NRN HALF OF CWA
WITH HIGH CHANCE POPS SOUTH.

SFC FRONT GRADUALLY PUSHES SOUTH OF CWA BY LATE MONDAY AFTERNOON
WITH THUNDERSTORM CHANCES GRADUALLY ENDING FROM THE NORTH DURING
THE DAY AND ACROSS SOUTHERN COUNTIES MONDAY NIGHT. WEAK HIGH
PRESSURE AND DRIER LOW LEVEL AIR MASS SPREADS INTO THE AREA
MONDAY THROUGH TUESDAY. TEMPS BEHIND THE BOUNDARY WILL BE
SLIGHTLY BELOW SEASONAL NORMS...ESPECIALLY AT NIGHT...AND A LOT
MORE COMFORTABLE FOR THIS TIME OF YEAR. THESE CONDITIONS WILL
LIKELY GRADUALLY MODIFY WEDNESDAY AND THURSDAY AS RETURN LOW LEVEL
FLOW DEVELOPS AND LOW LEVEL MOISTURE GRADUALLY RETURNS TO THE
NORTH.

LAST SEVERAL RUNS OF THE GFS MODEL BRING T.S./HRCN ALEX MORE
NORTHWARD TOWARD THE TX COAST ON FRI AND UP ACROSS OK/AR REGION
FRIDAY NIGHT THROUGH SATURDAY NIGHT. THIS SOLUTION CONTINUES TO BE
AN OUTLIER WITH MOST OTHER MODELS TAKING THE STORM NW INTO NRN
MEXICO SOUTH OF KBRO. HAVE THUS TRENDED OUR FORECAST FOR FRIDAY
THROUGH SUNDAY TOWARD THE ECMWF...WHICH SUGGESTS LITTLE TO NO
PRECIP CHANCES AND GRADUAL RETURN OF HEAT/HUMIDITY OVER THE
HOLIDAY WEEKEND.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   72  89  67  90 /  70  20  10  10
FSM   74  90  68  91 /  40  50  20  10
MLC   74  89  67  91 /  40  50  20  10
BVO   69  88  61  89 /  70  20   0  10
FYV   71  86  62  87 /  70  40  10  10
BYV   71  85  63  86 /  80  40  10  10
MKO   72  88  64  89 /  70  30  10  10
MIO   71  89  64  89 /  80  20   0   0
F10   72  87  64  89 /  70  30  10  10
HHW   75  92  71  93 /  40  50  30  10

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...HEAT ADVISORY UNTIL 7 PM SUNDAY FOR OKZ054-OKZ055-OKZ056-OKZ057-
     OKZ059-OKZ060-OKZ061-OKZ062-OKZ064-OKZ066-OKZ067-OKZ070-
     OKZ071-OKZ072-OKZ074-OKZ075-OKZ076.

AR...HEAT ADVISORY UNTIL 7 PM SUNDAY FOR ARZ019-ARZ020-ARZ029.

&&

SHORT TERM...05
LONG TERM....69

Hazardous weather outlook, Jun 27, 5:12 PM CDT, 39 minutes before

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In the hours before

Special weather statement, Jun 27, 2:59 PM CDT, 2 hours 52 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
259 PM CDT SUN JUN 27 2010

OKZ054>056-272030-
NOWATA OK-OSAGE OK-WASHINGTON OK-
259 PM CDT SUN JUN 27 2010

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 330 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     NORTHWESTERN NOWATA...WASHINGTON AND NORTHEASTERN OSAGE

AT 259 PM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER HULAH...MOVING
EAST AT 20 MPH. SOME LOCATIONS THAT WILL BE AFFECTED BY THIS STORM
INCLUDE...WANN...HULAH AND COPAN.

THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.

LAT...LON 3700 9569 3688 9565 3681 9608 3698 9614
      3700 9608
TIME...MOT...LOC 1959Z 254DEG 17KT 3692 9600

Special weather statement, Jun 27, 4:20 PM CDT, 1 hour 31 minutes before

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Special weather statement, Jun 27, 4:23 PM CDT, 1 hour 28 minutes before

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Special weather statement, Jun 27, 4:33 PM CDT, 1 hour 18 minutes before

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Special weather statement, Jun 27, 5:02 PM CDT, 49 minutes before

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Special weather statement, Jun 27, 5:34 PM CDT, 17 minutes before

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The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 27, 3:46 AM CDT	Heat Advisory	TSA	Craig, Creek, Haskell, Latimer, McIntosh, Mayes and 8 more	15 hr
Jun 27, 2:07 PM CDT	Special Weather Statement	TSA	Nowata	23 min
Jun 27, 2:59 PM CDT	Special Weather Statement	TSA	Washington	31 min
Jun 27, 3:02 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Rogers	43 min
Jun 27, 3:43 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Rogers	47 min
Jun 27, 4:23 PM CDT	Special Weather Statement	TSA	Craig	37 min
Jun 27, 4:33 PM CDT	Special Weather Statement	TSA	Mayes	42 min
Jun 27, 5:02 PM CDT	Special Weather Statement	TSA	Washington	43 min
Jun 27, 5:34 PM CDT	Special Weather Statement	TSA	Nowata	41 min
Jun 27, 5:59 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	46 min
Jun 27, 6:20 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Nowata, Rogers	40 min
Jun 27, 6:44 PM CDT	Special Weather Statement	TSA	Carroll, Madison	46 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2010 Every severe thunderstorm warning in 2010

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.