Alert archive / Arkansas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 65, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 11, 2001, 9:38 AM CDT for Carroll County, Madison County, Arkansas. It was in force for 52 min. 2 reports came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Apr 11, 2001, 9:38 AM CDT (14:38 UTC)
- Expired
- Apr 11, 2001, 10:30 AM CDT
- In force
- 52 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Carroll County, AR, Madison County, AR
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 11, 10:00 AM CDT | Thunderstorm Wind 52 E | Huntsville, AR | |
| Apr 11, 10:20 AM CDT | Thunderstorm Wind | Berryville, AR | Thunderstorm winds blew down large trees. |
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 |
|---|---|---|---|
| Apr 11, 6:15 AM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 2.6 hours before the alert went out and 82 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
- 614 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 815 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 256 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 4.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS54 KTSA 111438
SVRTUL
ARC015-087-111530-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
938 AM CDT WED APR 11 2001
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR
CARROLL COUNTY IN NORTHWEST ARKANSAS
MADISON COUNTY IN NORTHWEST ARKANSAS
* UNTIL 1030 AM CDT
* AT 938 AM CDT SEVERE THUNDERSTORMS CAPABLE OF PRODUCING WINDS UP TO
65 MPH WERE LOCATED ALONG A LINE EXTENDING FROM 3 MILES WEST OF
BUSCH TO 2 MILES EAST OF HINDSVILLE TO AURORA TO 3 MILES
SOUTHEAST OF DUTTON...MOVING NORTHEAST AT 45 MPH.
* SOME LOCATIONS AFFECTED INCLUDE... CLIFTY...MARBLE...WITTER...
BOSTON...FORUM...HINDSVILLE...KINGSTON...AURORA...PETTIGREW...
HUNTSVILLE...BEAVER...GRANDVIEW...URBANETTE...RULE...RUDD...OAK
GROVE...GREEN FOREST...OSAGE...EUREKA SPRINGS AND BERRYVILLE.
DAMAGING WINDS ARE LIKELY WITH THESE STORMS...MOVE TO A SAFE PLACE
NOW.
A TORNADO WATCH IS ALSO IN EFFECT. TORNADOES CAN DEVELOP SUDDENLY
FROM SEVERE THUNDERSTORMS. BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS.
LAT...LON 3649 9390 3611 9390 3596 9378 3577 9370
3581 9355 3622 9332 3652 9335What 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 Apr 11, 3:55 AM CDT, 5 hours 43 minutes earlier.
Area forecast discussion, Apr 11, 3:55 AM CDT, 5 hours 43 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 355 AM CDT WED APR 11 2001 RUNNING A BIT BEHIND THIS MORNING... LARGE RAIN SHIELD WITH EMBEDDED SEVERE THUNDERSTORMS IS CURRENTLY MOVING THROUGH ERN OK...WITH ADDITIONAL ACTIVITY FARTHER W ALONG DRYLINE. VAD WIND PROFILES SHOWING MARGINAL DIRECTION SHEAR...ALTHO SPEED SHEAR IS IMPRESSIVE. CHANCE OF SEVERE STORMS WILL CONTINUE INTO THE MORNING...WITH ACTIVITY EXITING ERN EXTENT OF FORECAST AREA 14-16Z. WILL USE RADAR FOR FINAL 1ST PERIOD POPS. INTENSE 982MB SFC CYCLONE WILL LIFT INTO NE TODAY...WITH PRESSURE GRADIENT TIGHTENING ACROSS THE AREA. DEEP LAYERED MIXING WILL HELP BRING DOWN GUSTY SWLY WINDS TO THE SFC...AND WILL GO WITH A WIND ADVISORY FOR ALL ZONES TODAY. MUCH DRIER LOW-LEVEL AIR WILL FILTER EWD LATER TODAY AND TONIGHT. WINDS WILL SLACK OFF TONIGHT...SO THE STRING OF 5 RECORD HIGH LOWS WILL END AT TULSA WITH MORE SEASONABLE TEMPS ON TAP. REMAINDER OF WEEK LOOKS SEASONABLE AND DRY. ZONAL FLOW WILL PERSIST THROUGH THE WEEKEND...WITH SEVERAL FAST-MOVING/IMPOSSIBLE-TO-TIME WAVES PASSING ACROSS THE FORECAST AREA. AVN WANTS TO BRING LOW-LEVEL MOISTURE BACK ON SAT AHEAD OF STRENGTHENING SFC LOW OVER WRN TX. WILL KEEP LOW CHANCE POPS IN FOR SAT AND SUN. FCSTID = 18 PRELIM NUMBERS... TUL 74 49 77 53 / 50 0 0 10 FSM 78 50 82 55 / 70 0 0 10 MLC 76 49 81 57 / 50 0 0 10 BVO 74 48 77 52 / 50 0 0 10 FYV 74 47 76 52 / 70 0 0 10 BYV 74 47 76 52 / 70 0 0 10 MIO 74 47 76 52 / 70 0 0 10 MKO 74 49 77 53 / 50 0 0 10 F10 74 49 77 53 / 50 0 0 10 HHW 76 51 81 58 / 60 0 0 10 .TSA... AR...WIND ADVISORY FOR WEDNESDAY FOR ZONES ARZ001>002...ARZ010>011... ARZ019>020...ARZ029. OK...TORNADO WATCH UNTIL 800 AM CDT FOR ZONES OKZ054>057...OKZ059>062...OKZ064>067...OKZ070>071...OKZ073. WIND ADVISORY FOR WEDNESDAY FOR ZONES OKZ049...OKZ053>076.
In the hours before
Special weather statement, Apr 11, 6:00 AM CDT, 3 hours 38 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-121100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 600 AM CDT WED APR 11 2001 ...FEW SEVERE THUNDERSTORMS EXPECTED THIS MORNING... ...TORNADO WATCH FOR NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS THIS MORNING... EARLY THIS MORNING...A LINE OF SEVERE THUNDERSTORMS WAS MOVING RAPIDLY ACROSS SOUTHEAST OKLAHOMA. A SECONDARY LINE OF STORMS WAS APPROACHING NORTHEAST OKLAHOMA. THESE LINES OF THUNDERSTORMS WILL SWEEP ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THROUGH THE MORNING. DAMAGING WINDS WILL BE THE MAIN THREAT WITH THESE STORMS. A SURFACE DRYLINE EXTENDED ACROSS CENTRAL OKLAHOMA...GENERALLY WEST OF AN ENID TO OKLAHOMA CITY LINE. MEANWHILE AN INTENSE SURFACE LOW PRESSURE WAS LOCATED IN EASTERN COLORADO WITH A FRONTAL BOUNDARY EXTENDING THROUGH NORTHEAST KANSAS. THIS LOW PRESSURE WILL LIFT NORTHEAST ACROSS NEBRASKA TODAY. SURFACE WINDS WILL BE VERY STRONG TODAY OUT OF THE SOUTH...AND WILL SWITCH TO THE SOUTHWEST AS THE DRYLINE APPROACHES LATER THIS MORNING. .SPOTTER ACTIVATION... SPOTTERS HAVE BEEN ACTIVATED IN EASTERN OKLAHOMA...AND MAY BE ACTIVATED IN NORTHWEST ARKANSAS LATER THIS MORNING. .DISCUSSION... TWO MAIN AREAS WILL BE THE FOCUS FOR SEVERE WEATHER TODAY. THE FIRST AREA IS GENERALLY SOUTH OF A TULSA TO JAY LINE. A SQUALL LINE WITH EMBEDDED BOW ECHOES WILL MOVE ACROSS SOUTHEAST OKLAHOMA EARLY THIS MORNING...WITH DAMAGING WINDS POSSIBLE. AREA PROFILERS SHOW STRONG WINDS IN THE LOW LEVELS...RANGING FROM 40 TO 60 KNOTS. THE SHEAR IS MAINLY UNIDIRECTIONAL WHICH WILL LIMIT THE THREAT OF TORNADOES. HOWEVER...DOPPLER RADAR DATA HAS SHOWN ROTATION WITHIN STORMS ALONG THE SQUALL LINE...SO TORNADOES WILL BE POSSIBLE THROUGH AT LEAST THE MID MORNING. THE MAIN THREAT HOWEVER...WILL CONTINUE TO BE ON DAMAGING STRAIGHT LINE WINDS. STRONG SURFACE WINDS OF 30 TO 40 MILES AN HOUR HAVE BEEN COMMON THROUGH THE NIGHT ACROSS EASTERN OKLAHOMA... AND WILL CONTINUE ACROSS THE ENTIRE AREA THROUGH THE DAY. THE SECOND AREA OF CONCERN IS ACROSS NORTHEAST OKLAHOMA...AS ANOTHER LINE OF THUNDERSTORMS CURRENTLY ACROSS CENTRAL KANSAS AND NORTH CENTRAL OKLAHOMA APPROACHES. THE MAIN THREAT WITH THESE STORMS WILL BE DAMAGING WINDS. THE AIRMASS ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS REMAINS UNSTABLE...WITH LIFTED INDEX VALUES RANGING FROM -4 TO -6 AND SURFACE BASED CAPES APPROACHING 2000 J/KG. THREAT TABLE VALID THROUGH 1200 UTC THURSDAY AREA 1...SOUTH OF A TULSA TO JAY LINE THUNDERSTORM PROBABILITY...100 SEVERE PROBABILITY IF STORMS OCCUR...70 SIGNIFICANT SEVERE PROBABILITY IF STORMS OCCUR...30 THREAT AREAS DEFINE THE GREATEST RISK. PROBABILITIES ARE IN PERCENT. SIGNIFICANT SEVERE IS DEFINED AS F1 OR GREATER WIND/TORNADO DAMAGE AND/OR GOLF BALL SIZE HAIL OR LARGER. .OTHER HAZARDS... A WIND ADVISORY HAS BEEN ISSUED FOR THE ENTIRE AREA FOR TODAY. PLEASE SEE THE LATEST /OKCNPWTUL/ FOR DETAILS. ALSO...THE STRONG WINDS WILL CAUSE A VERY HIGH FIRE DANGER TODAY. PLEASE SEE /OKCFWMTUL/ FOR THE LATEST INFORMATION ON THIS. AN UPDATED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AROUND 1 PM.
Special weather statement, Apr 11, 9:12 AM CDT, 26 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053-057-062-068-074-075-058- 063-069-072-076-111700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 912 AM CDT WED APR 11 2001 TORNADO WATCH NUMBER 130 HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES IN EASTERN OKLAHOMA... CHEROKEE..CHOCTAW...CRAIG...HASKELL...LATIMER...MAYES... PUSHMATAHA TORNADO WATCH NUMBER 130 REMAINS IN EFFECT UNTIL NOON CDT TODAY FOR THE FOLLOWING COUNTIES IN EASTERN OKLAHOMA AND NORTHWEST ARKANSAS... ADAIR...BENTON...CARROLL...CRAWFORD...DELAWARE...FRANKLIN... LE FLORE...MADISON...OTTAWA...SEBASTIAN...SEQUOYAH... WASHINGTON AR
Local storm report, Apr 11, 9:30 AM CDT, 8 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE TULSA OK
930 AM CDT WED APR 11 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0525 AM 1 S BEARDEN OK WIND DAMAGE
04/11/01 OKFUSKEE TREE LIMBS BLOWN DOWN
NEAR BEARDEN SCHOOLThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 7:44 AM CDT | Severe Thunderstorm Warning | TSA | Crawford, Sebastian | 46 min |
| Apr 11, 8:03 AM CDT | Severe Thunderstorm Warning | TSA | Benton, Washington | 57 min |
| Apr 11, 8:27 AM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Sebastian | 63 min |
| Apr 11, 8:47 AM CDT | Severe Thunderstorm Warning | TSA | Benton, Carroll, Madison, Washington | 58 min |
| Apr 11, 9:34 AM CDT | Severe Thunderstorm Warning | TSA | Franklin | 41 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2001Every 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; the sounding from the Mesonet's radiosonde archive.