Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 409, NWS Norman, OK

June 11, 1996Alfalfa County, Grant County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 11, 1996, 4:51 PM CDT for Alfalfa County, Grant County, Oklahoma. It was in force for 39 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 11, 1996, 4:51 PM CDT (21:51 UTC)
Expired: Jun 11, 1996, 5:30 PM CDT
In force: 39 min
Issued by: NWS Norman, OK
Area: Whole counties

Counties Alfalfa County, OK, Grant County, OK

What was reported inside it

Time	Report	Where
Jun 11, 5:00 PM CDT	Hail 0.75	Wakita, OK
Jun 11, 5:00 PM CDT	Hail 1	Byron, OK
Jun 11, 5:00 PM CDT	Hail 0.88	Burlington, OK

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 9.9 hours before the alert went out and 198 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: 1373 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 1336 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 11, 3:10 PM CDT, 1 hour 41 minutes earlier.

Area forecast discussion, Jun 11, 3:10 PM CDT, 1 hour 41 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
310 PM CDT TUE JUN 11 1996

MODELS HAVING A HARD TIME BLDG CAP ACRS FA...WITH NGM WKST. AVN STGST
36-48HRS BUT STILL DOESN'T BLD SIG CAP. ETA SEEMS TO BE MORE OR LESS A
COMPROMISE BTWN AVN/NGM. THINK AVN TEMPS ARE MORE IN LN WITH BLDG UPR
RDG PTRN.

ATMOS OVR MUCH OF FA RELATIVELY UNSTABLE. WITH WK CAP...WL LEAVE SLGT
CHC POPS MOST AREAS...WITH CHC EVNG POPS ACRS NW/NCNTRL OK NR WK BNDRYS.
CDFNT APRCHG WED NGT INTO THURS SEEMS OVERDONE BY NGM AND ETA. AVN ONCE
AGAIN MODEL OF CHOICE WITH THIS FEATURE. AVN HOLDS UP FNT ACRS NRN PTNS
OF FA THURS INTO FRI. WL INCR POPS IN VCNTY OF BNDRY.

ON SAT/SUN...MRF TRIES TO BRING FNT INTO FA ON HEELS OF BROAD SHEAR
AXIS. WITH STAGNANT PTRN...MRF MAY BE TOO AGRESSIVE. WL NOT INTRO POPS
ATTM WITH UPR RDG IN PLACE. IT WILL ALSO BE HARD TO GET THINGS GOING
WITH CAP IN PLACE AT THAT TIME.

FCSTID = 11
OKC   67  90  69  92 /  20  20  20  20
HBR   68  94  68  96 /  20  20  20  20
SPS   68  95  69  97 /  20  20  20  20
GAG   65  94  66  95 /  30  20  30  30
PNC   69  93  70  93 /  30  20  30  30
DUA   67  89  68  90 /  20  20  20  30

.OKC...
OK...NONE.
TX...NONE.

In the hours before

Special weather statement, Jun 11, 12:32 PM CDT, 4 hours 19 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 5:27 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	63 min
Jun 11, 6:59 PM CDT	Severe Thunderstorm Warning	OUN	Harper	46 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1996 Every severe thunderstorm warning in 1996

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.