Alert archive / Nebraska / Flash Flood Warnings in 1998
Flash Flood Warning 6, NWS Omaha, NE
NWS Omaha, NE issued this flash flood warning at Jun 8, 1998, 11:45 PM CDT for Washington County, Nebraska. It was in force for 6 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
- Jun 8, 1998, 11:45 PM CDT (04:45 UTC)
- Expired
- Jun 9, 1998, 5:50 AM CDT
- In force
- 6 hr
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
County Washington County, NE
The radar
The Omaha radar (KOAX), 26 km from the middle of the area, began a volume at 04:40 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
Omaha, NE (KOAX), launched 00:00Z, 4.8 hours before the alert went out and 27 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
- 639 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 339 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 KOMA 090445 FFWOMA NEC177-091050- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1145 PM CDT MON JUN 8 1998 THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A * FLASH FLOOD WARNING FOR... WASHINGTON COUNTY IN EAST CENTRAL NEBRASKA * UNTIL 550 AM CDT * AT 1140 PM CDT... EMERGENCY MANAGEMENT REPORTED SIGNIFICANT FLOODING IN THE HERMAN NEBRASKA AREA. DOPPLER RADAR ESTIMATES THAT AROUND TWO INCHES OF RAIN HAD FALLEN IN THE AREA FROM WEST OF SPIKER TOWARD HERMAN. THIS IS IN ADDITION TO THE RAIN FROM EARLIER MONDAY. SOME STREAMS AFFECTED INCLUDE...THE SMALL STREAMS AROUND HERMAN... BELL CREEK...AND THE NORTHERN PART OF THE BIG PAPIO CREEK. D"O NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR VEHICLE TO CROSS SAFELY. MILLER
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 Omaha, NE wrote its last area forecast discussion before this flash flood warning went out at Jun 8, 2:37 AM CDT, 21 hours 8 minutes earlier.
Area forecast discussion, Jun 8, 2:37 AM CDT, 21 hours 8 minutes before
CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HASTINGS NE 237 AM CDT MON JUN 8 1998 THUNDERSTORMS ARE MAIN CONCERN FOR THIS FORECAST. SFC BNDRY STILL STRETCHED ALONG KS/NE BDR EARLY THIS MORNING WITH LOW LVL MOISTURE CONTINUING TO ADVECT NORTHWARD ABOARD STRONG SRLY WINDS. WHILE LARGE SHIELD OF SHOWERS/TSTMS CONTINUES TO REDVLP OVER AREA AS IT MOVES NORTHEAST...STRONGER CELLS HAVE DVLPD OVER WC KS ON NOSE OF UPPER JET MAX HAULING IN FROM SW. PLENTY OF SHORT WAVE ENERGY STILL WAITING TO KICK OUT OF ROCKIES ALONG WITH SFC LOW WHICH WAS OVER EC COLORADO AT 06Z. STRONG UPPER DYNAMICS ALONG WITH LOW LVL MSTR CONVERGENCE AND DIRECTIONAL SHEAR NEAR BNDRY WILL CONTRIBUTE TO POSSIBILITY OF SVR WX TODAY WITH EAST MOST FAVORED DUE TO TIME OF DAY OF PARAMETERS COMING TOGETHER. SPC MDT RISK FROM ERN GID COUNTIES EWD LOOKS GOOD. ETA APPEARED TO BE DOING WELL WITH DETAILS THUS FAR AND HAVE OPTED TO FOLLOW THROUGH PERIOD. WILL KEEP IN CHANCES FOR EVENING THUNDERSTORMS AND GO WITH HIGHEST POPS OVER SE FA IN MOST UNSTABLE AIR. ETA INDICATES CINH TO TAKE OVER AS DRIER AIR PUSHES IN TNGT. TEMPS TRICKY TODAY AND DEPENDENT ON LOW CLOUD COVER NORTH OF FRONT. FAN NUMBERS ARE EXTREMELY COOL AND SUSPECT WITH DYNAMICS OF SITUATION AND DRY PUNCH INTO SW FA TAFTN THAT FWC ALSO TOO COOL FOR NORTHERN AREAS. WILL GO WITH BLEND OF FWC AND ETA BLYR TEMPS TODAY. WITH OUTFLOW BNDRY LIKELY AFTER TNGTS CONVECTION...ANY RETURN MOISTURE TUESDAY LIKELY TO BE INITIALLY CUT OFF. THEREFORE WILL LEAVE OUT ANY MENTION OF TSTMS ON TUESDAY DESPITE ETAS MOVEMENT OF 500MB WAVE ACROSS AREA TUES AFTN. TSTMS WILL WAIT FOR BETTER MSTR RETURN AND 700MB WAVE TUESDA NIGHT. TEMPS TUESDAY ON COOLER SIDE OF GUIDANCE UNDER PARTIAL SUNSHINE. GRI TB 074/057/076/059/080 +31 DROZD
In the hours before
Special weather statement, Jun 8, 6:20 PM CDT, 5 hours 25 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-091200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 520 PM CST MON JUN 8 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER GROUPS IN EASTERN NEBRASKA AND SOUTHWEST IOWA MAY NEED TO BE ACTIVATED THIS EVENING AND TONIGHT. DISCUSSION... A LOW PRESSURE CENTER IS EXPECTED TO TRACK EAST ACROSS NORTHERN KANSAS TONIGHT. A WARM FRONT IS NEAR THE KANSAS/NEBRASKA BORDER...THEN CURVES SOUTHEAST INTO CENTRAL MISSOURI. THUNDERSTORMS WILL BE SCATTERED OVER THE AREA THROUGH MIDNIGHT. THERE WAS ALREADY A REPORT OF LARGE HAIL IN SOUTHEAST NEBRASKA LATE THIS AFTERNOON...AND MORE STORMS ARE POSSIBLE. THE MAIN THREAT IS LARGE HAIL...BUT THERE COULD ALSO BE SOME DAMAGING WINDS. THE MOST LIKELY AREA FOR SEVERE WEATHER IS SOUTH OF A LINE FROM SEWARD NEBRASKA TO OMAHA AND THEN TO OAKLAND IOWA. IN ADDITION TO THE THREAT OF SEVERE WEATHER...VERY HEAVY RAIN MAY OCCUR WITH SOME OF THE STORMS. LOCAL AMOUNTS OF OVER TWO INCHES ARE LIKELY. MILLER
Local storm report, Jun 8, 7:18 PM CDT, 4 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
718 PM CDT MON JUN 08 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0444 PM 1 E HICKMAN NE 1.25 INCH HAIL
06/08/98 LANCASTER
0530 PM 2 S SWEDEBURG NE FLOODING
06/08/98 SAUNDERS WATER OVER HIGHWAY SOUTH
OF SWEDEBURG
0620 PM 4 NW PLATTSMOUTH NE WIND DAMAGE
06/08/98 SARPY LARGE TREE LIMBS BLOWN
DOWN
MILLERSpecial weather statement, Jun 8, 11:27 PM CDT, 18 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-091200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1130 PM CST MON JUN 8 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER GROUPS ACROSS EASTERN NEBRASKA AND SOUTHWEST IOWA WILL PROBABLY NOT BE NEEDED THE REST OF THE NIGHT. DISCUSSION... THUNDERSTORMS MAY LINGER IN PARTS OF WESTERN IOWA AND THE NORTHEAST CORNER OF NEBRASKA INTO THE EARLY MORNING HOURS OF TUESDAY...BUT THE THREAT OF SEVERE WEATHER HAS DECREASED GREATLY. AN AREA OF LOW PRESSURE OVER NORTHEAST KANSAS SHOULD CONTINUE TO MOVE EAST DURING THE NIGHT. COOLER AND MORE STABLE AIR IS EXPECTED TO WORK ITS WAY INTO THE AREA AS THE WIND SHIFTS TO THE NORTHWEST. > MILLER
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 9:19 PM CDT | Severe Thunderstorm Warning | OAX | Dodge | 51 min |
Nearby
Flash Flood Warnings in Nebraska, 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.