Alert archive / Oklahoma / Flash Flood Warnings in 1998
Flash Flood Warning 35, NWS Tulsa, OK
NWS Tulsa, OK issued this flash flood warning at Sep 14, 1998, 5:02 AM CDT for Muskogee County, Oklahoma. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 14, 1998, 5:02 AM CDT (10:02 UTC)
- Expired
- Sep 14, 1998, 8:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Muskogee County, OK
The radar
The Tulsa radar (KINX), 64 km from the middle of the area, began a volume at 10:01 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 00:00Z, 10.0 hours before the alert went out and 201 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 888 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 286 m²/s²
- 0-3 km storm-relative helicity
- 349 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KTUL 141007
FFWTUL
OKC101-141300-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
502 AM CDT MON SEP 14 1998
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* FLASH FLOOD WARNING FOR
MUSKOGEE COUNTY IN EAST CENTRAL OKLAHOMA
* UNTIL 800 AM CDT
* AT 502 AM CDT RADAR INDICATED VERY HEAVY RAIN MOVING BACK OVER
MUSKOGEE COUNTY. FROM 4 TO 6 INCHES OF RAIN HAS FALLEN OVER PARTS
OF MUSKOGEE COUNTY OVERNIGHT AND ANY ADDITIONAL RAIN WILL CAUSE
FLOODING OF LOW LYING AREAS AND MAY CAUSE CREEKS AND SMALL STREAMS
TO FLOOD. AN ADDITIONAL 1 TO 2 INCHES OF RAIN MAY FALL IN AREAS FROM
THE CITY OF MUSKOGEE INTO THE WARNER AND WEBBERS FALLS AREA THROUGH
7AM.
* SOME LOCATIONS AFFECTED INCLUDE... WEBBERS FALLS
...BRAGGS...WARNER MUSKOGEE AND PORUM
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHIZCLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Sep 14, 4:55 AM CDT, 7 minutes earlier.
Area forecast discussion, Sep 14, 4:55 AM CDT, 7 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 455 AM CDT MON SEP 14 1998 PROBLEM(S) OF THE DAY: WILL THERE BE ANY FLOODING? HOW MUCH RAIN WILL FALL? POPS LOW CLOUDS REMNANTS OF FRANCES HAVE MOSTLY SPREAD NEWD INTO MO AHEAD OF SLOW MOVING S/W TROUGH. INTERESTING SFC MAP SHOWS SFC LOW N OF CNU WITH WK FRONT EXTENDING TO W OF BVO TO OKC TO CDS. WITH SLOW MOVEMENT OF S/W TROF AND LACK OF SFC RIDGING BEHIND FRONT...THINK FRONT WILL NOT MOVE VERY QUICKLY TODAY. AM NOT OPTIMISTIC ABOUT SHRA MOVING OUT OF THE ERN ZONES...BUT DO THINK THAT RAINFALL RATES WILL DECREASE SOME TODAY AS LIFTING WEAKENS AND PW VALUES DECREASE TO 1.5-2.0 INCHES VS THE 2-2.3 INCH VALUES THE LAST 36 HOURS. MODELS..ESP THE ETA...KEEP TRYING TO GEN UP SOME MORE PRECIP TO THE S ACROSS NE TX BUT DO NOT SEE THE FORCING FOR THIS. ETA HAS A 40KT H3 JET ACROSS ERN OK WITH GOOD HORIZ GRADIENT OF WIND SPEED IN THE RR QUAD BUT NGM IS MUCH WEAKER. EXPECTED LL TEMP GRAD DOES NOT SUPPORT THIS FEATURE SO HAVE SIDED MORE WITH NGM AND AVN QPF. THINK CHCS OF POST-FRONTAL PRECIP WEST OF TROPICAL PLUME WILL BE MUCH LOWER THAN GUIDANCE BUT SHOULD AT LEAST KEEP 30 POPS MAYBE HIGHER. DZ HAS MEASURED HERE AT KTUL IN THE LAST 2 HOURS...ALWAYS A FORECASTERS NEMESIS. LATEST MRF HOLDS BACK TROPICAL SYSTEM IN THE GULF. THE FUTURE OF THIS FEATURE WILL BE IMPORTANT IF WE PLAN ON KEEPING POPS IN FCST FOR FRIDAY ON. HAVE REMOVED POPS FOR FRIDAY...BIG S/W TROUGH OVER NW US SHOULD BECOME BAROTROPIC OVER SRN CA AND NO BIG IMPACT ON LOCAL WX AS WESTERLIES REMAIN JUST TO OUR N. FCSTID = 26 TUL 81 65 83 63 / 60 30 30 20 FSM 77 71 83 65 / 100 70 40 30 MLC 79 69 84 64 / 90 60 40 20 BVO 85 62 85 63 / 30 20 20 20 FYV 76 68 79 62 / 100 70 40 30 IDB 78 71 85 65 / 100 60 30 20 BYV 76 68 79 62 / 100 70 40 30 MIO 79 66 81 62 / 90 60 30 30 MKO 79 69 84 64 / 90 60 40 20 F10 81 65 83 63 / 60 30 30 20 HHW 78 71 85 65 / 100 60 30 20 .TUL... OK...FLASH FLOOD WATCH FOR TODAY FOR ZONES OKZ049...OKZ053... OKZ058...OKZ063...OKZ068>077. AR...FLASH FLOOD WATCH FOR TODAY FOR ZONES ARZ001>002...ARZ010>011... ARZ019>020...ARZ029. -------------------- EXPERIMENTAL OUTPUT: EXPECTED MESOSCALE FEATURE: MODERATE AREAS/BANDS OF PRECIP GENERAL WEATHER EXPECTED NEXT 24 HOURS: CONVECTIVE PRECIP HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: GOOD CHANCE HEAVY RAINFALL NGM CONFIDENCE: 7 ON A SCALE OF 0 TO 10 ETA CONFIDENCE: 6 ON A SCALE OF 0 TO 10 AVN CONFIDENCE: 7 ON A SCALE OF 0 TO 10 FCST CONFIDENCE: 8 ON A SCALE OF 0 TO 10 MOST USEFUL TOOL: MOD4EL GRIDS BEST MODEL FIELD: PRECIP.. H7 OMEGA.. H3 AND H8 WINDS
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 13, 11:37 PM CDT | Flash Flood Warning | TSA | Cherokee, Muskogee | 3 hr |
| Sep 14, 1:25 AM CDT | Flash Flood Warning | TSA | Adair, Cherokee, Sequoyah | 4 hr |
| Sep 14, 3:18 AM CDT | Flash Flood Warning | TSA | Ottawa | 3 hr |
| Sep 14, 4:54 AM CDT | Flash Flood Warning | TSA | Delaware | 3 hr |
| Sep 14, 5:18 AM CDT | Flash Flood Warning | TSA | Adair, Cherokee, Sequoyah | 3 hr |
| Sep 14, 6:12 AM CDT | Flash Flood Warning | TSA | Ottawa | 108 min |
Nearby
Flash Flood Warnings in Oklahoma, 1998Every flash flood warning in 1998
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.