Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 374, NWS Norman, OK

June 1, 2001Grant County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 1, 2001, 9:14 PM CDT for Grant County, Oklahoma. It was in force for 46 min. 1 report 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 1, 2001, 9:14 PM CDT (02:14 UTC)
Expired: Jun 1, 2001, 10:00 PM CDT
In force: 46 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Grant County, OK

What was reported inside it

Time	Report	Where	Remark
Jun 1, 9:16 PM CDT	Hail 1	Wakita, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 1, 4:30 PM CDT	Tornado Watch	SPC	6 hr

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 1, 2:38 PM CDT, 6 hours 36 minutes earlier.

Area forecast discussion, Jun 1, 2:38 PM CDT, 6 hours 36 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
238 PM CDT FRI JUN 1 2001

COMPLICATED FORECAST FOR THE NEXT 7 DAYS WITH NORTHWEST FLOW REGIME
TRANSITIONING TO WESTERLY FOR SUN/MON..THEN BACK TO NW FLOW FOR THE
MIDDLE OF THE WEEK. CHANCES FOR THUNDERSTORMS WILL BE HIGHLY
INFLUENCED BY RESIDUAL OUTFLOW BOUNDARIES AND STRENGTHENING CAP THRU
SUN NITE. DEWPOINTS AND INSTABILITY HAVE BEEN SLOWLY RISING ALL DAY
ACROSS OK/KS..WITH SUFFICIENT MOISTURE/SHEAR NOW IN PLACE FOR SEVERE
STORMS. MCS SHUD ORGANIZE TO OUR N/NW THIS EVENING AND SWEEP SEWD
OVERNITE WITH BEST CHANCES OF STORMS IN THE ERN ZONES. SUSPICIOUS
THAT WE MAY SEE SOME BACKBUILDING INTO THE LLJ AXIS LATE TONITE AND
SAT MORNING. IF THIS HAPPENS..ANTECEDENT CONDITIONS SUGGEST A FLASH
FLOOD THREAT IN CENTRAL/NC OK..BUT DO NOT HAVE ENUF CONFIDENCE IN
SIZE/LOCATION OF SPECIFIC THREAT ATTM TO ISSUE A FLASH FLOOD WATCH.

LOW LEVEL RIDGING WILL BRIEFLY BUILD INTO THE AREA ON SAT..WHICH
SHUD SHUT THINGS OFF /AT LEAST NORTH/ AFTER OVERNITE COMPLEX HAS
MOVED AWAY.  HOWEVER..BOUNDARY IS FORECAST TO STALL ALONG THE RED
RIVER SAT AFTERNOON AND THERE IS AT LEAST A SMALL CHANCE THAT STORMS
CUD INTITIATE ALONG IT SAT AFT/EVE.  CAP STRENGTH WILL BE INCREASING
WITH TIME AS FLOW ALOFT TURNS MORE WRLY..BUT WILL NEED TO MONITOR.
IN ANY CASE..THE LOW LEVEL RIDGING OVRHEAD SAT WILL LEAD TO VERY
MOIST AND UNSTABLE UPSLOPE FLOW ON THE HIGH PLAINS..WHICH WILL
RESULT IN MORE STORMS THAT SHUD ORGANIZE INTO YET ANOTHER OVERNITE
COMPLEX MOVING SEWD TOWARD OK.

TRANSITION TO MORE WRLY FLOW ALOFT WILL TAKE PLACE ON SUN AS
ENERGETIC TROF DIGS INTO THE NRN ROCKIES. VERY RICH MOISTURE SHUD
SURGE NWD INTO THE AREA..LEADING TO HUGE INSTABILITIES.
HOWEVER..THE RETURN TO MORE WRLY FLOW ALOFT MAY ADVECT A BLAZINGLY
HOT ELEVATED MIXED LAYER ACROSS THE SRN PLAINS /PER RECORD HEAT
CURRENTLY IN THE DESERT SW/..RENDERING MUCH OF THE SRN PLAINS
CAPPED. THUS..THE BEST COMBINATION OF SHEAR/CAPE/LOW CIN MAY EXIST
TO THE NORTH OF OUR FORECAST AREA ON SUN..WITH LITTLE ACTION HERE
UNTIL THE COLD FRONT SWINGS SWD INTO THE AREA SUN NITE/MON/MON
NITE.  MAX TEMPS WILL BE BUMPED UPWARD 2 TO 3 CATEGORIES FROM THE
PREVIOUS FORECAST IN THE SW ZONES FOR SUN.

CURRENT FORECAST FOR THE REST OF THE WEEK HAS NO MENTION OF PRECIP
ATTM. FOR NOW WILL LEAVE THESE PERIODS DRY IN AN ATTEMPT TO AVOID
YET ANOTHER FORECAST FLIP-FLOP.  HOWEVER..THE AREA WILL REMAIN IN
NORTHWEST FLOW ALOFT IN A PATTERN FAVORABLE FOR DAILY THUNDERSTORM
INITIATION OVR THE HIGH PLAINS.  THIS PATTERN IS FAVORABLE FOR
NOCTURNAL/EARLY MORNING STORMS IN OUR LITTLE AREA OF THE WORLD.
CERTAINLY WUD NOT BE SURPRISED TO SEE POPS INTRODUCED FOR PARTS OF
THE AREA IN LATER FORECAST ISSUANCES WHEN TIMING AND FOCUS FOR
AFOREMENTIONED CONVECTIVE EPISODES BECOMES CLEARER.
 MILLER

PRELIM NUMBERS..
OKC   62  78  62  85 /  60  30  40  20
HBR   63  83  64  91 /  40  30  20  20
SPS   65  87  66  95 /  30  30  20  20
GAG   58  79  62  87 /  60  10  30  20
PNC   58  76  62  83 /  70  10  50  30
DUA   62  84  66  88 /  40  30  20  20

.OUN...
OK...NONE.
TX...NONE.
k

In the hours before

Local storm report, Jun 1, 8:53 PM CDT, 21 minutes before

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Local storm report, Jun 1, 8:57 PM CDT, 17 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 1, 8:33 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	42 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2001 Every severe thunderstorm warning in 2001

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.