Isolated thunderstorms develop just behind a weakening cold front as the low level jet increased during the evening of August 24th. The thunderstorms were generally non-severe and continued into the morning of August 25th, but an isolated microburst did occur in parts of Jefferson County in southeast Nebraska.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS OAX wrote it up.
Isolated thunderstorms develop just behind a weakening cold front as the low level jet increased during the evening of August 24th. The thunderstorms were generally non-severe and continued into the morning of August 25th, but an isolated microburst did occur in parts of Jefferson County in southeast Nebraska.
The local office's own words before the first event, 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 the first event at Aug 24, 10:29 PM CST, 46 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1129 PM CDT SUN AUG 24 2014 .SHORT TERM...(TONIGHT THROUGH WEDNESDAY) ISSUED AT 300 PM CDT SUN AUG 24 2014 OVERALL...DID NOT REALLY MAKE ANY SIGNIFICANT CHANGES TO PREVIOUS FORECASTS. TSTM CHANCES AND POTENTIAL FOR HEAVY RAIN BOTH MONDAY NIGHT AND TUESDAY NIGHT ARE THE MAIN CONCERNS. THE CHANCE OF SEVERE STORMS STILL SEEMS FAIRLY SMALL...AT LEAST FOR ANY WIDESPREAD SEVERE ACTIVITY. UPPER AIR CHARTS FROM 12Z SHOWED THE FOLLOWING. AT 300 MB...TWO JET SEGMENTS WERE NOTED. FIRST WAS DIGGING SOUTH ALONG THE WEST COAST OF THE PACIFIC NORTHWEST (95 KNOTS) AND THE OTHER WAS PUNCHING NORTHEAST FROM SOUTHWEST SOUTH DAKOTA (80 KNOTS). THE SECOND JET MAX WAS ON THE SOUTHEAST EDGE OF THE CLOSED LOW AT 500 MB WHICH WAS CENTERED OVER EASTERN MONTANA. 12 HOUR HEIGHT FALLS OF UP TO AROUND 100 METERS WERE ESTIMATED AT 12Z OVER THE SOUTH DAKOTA/ MONTANA BORDER REGION. THERMAL RIDGE AT 700 MB STRETCHED FROM TEXAS UP INTO MINNESOTA...AND A NARROW MOIST BAND EXTENDED FROM NEW MEXICO UP INTO MANITOBA AND SOUTHWEST ONTARIO. FROM THE KOAX 12Z SOUNDING...WE HAD A DEWPOINT OF 6 DEGREES C AT 700 MB...THE K INDEX WAS 37 AND PRECIPITABLE WATER WAS 1.37 INCHES. WEAK COLD FRONT WAS BISECTING THE AREA EARLY THIS AFTERNOON AND WILL PROBABLY CONTINUE TO PUSH SOUTHEAST BEFORE BECOMING NEARLY STATIONARY LATER TONIGHT. THERE DOES APPEAR TO BE A SMALL CHANCE FOR SHOWERS AND THUNDERSTORMS MAINLY ACROSS ABOUT THE SOUTHEAST HALF OF THE FORECAST AREA TONIGHT. EXPECT COVERAGE TO BE SPOTTY AND AMOUNTS TO GENERALLY BE LIGHT. LOOK FOR LOWS RANGING FROM UPPER 50S IN OUR FAR NORTHWEST ZONES TO NEAR 70 AT THE MISSOURI BORDER. THERE SHOULD CONTINUE TO BE A FAIRLY LARGE RANGE OF BOTH HIGH AND LOW TEMPERATURES FROM NORTH TO SOUTH THE NEXT FEW DAYS. MONDAY... WE EXPECT AN INCREASE IN PCPN COVERAGE...ESPECIALLY ACROSS THE NORTH IN THE AFTERNOON. LOW PRESSURE AT THE SURFACE SHOULD STRENGTHEN OVER SOUTHEAST COLORADO...ATTEMPTING TO CAUSE THE STALLED FRONT TO DRIFT NORTH. LIFT OVER THE BOUNDARY SHOULD BE ENHANCED AS THE LOW LEVEL JET INCREASES MONDAY NIGHT. LOCAL POINT FORECAST SOUNDINGS FROM THE 12Z NAM SHOW PRECIPITABLE WATER VALUES REACHING AROUND 1.80 INCHES BY LATE AFTERNOON MONDAY AND THEN AROUND 2.00 INCHES OR MORE IN THE EVENING. K INDEX VALUES REACH 40 OR HIGHER. STORMS SHOULD BE SLOW MOVING AND MAY TEND TO BACKBUILD A BIT. AXIS OF HEAVIEST RAIN MONDAY NIGHT LOOKS TO BE ABOUT 30 MILES EITHER SIDE OF A LINE FROM ALBION TO ONAWA. FOR THE MOST PART...THE GROUND SHOULD BE ABLE TO HANDLE THIS RAIN UNLESS WE GET WIDESPREAD AMOUNTS OVER 3 INCHES IN A SHORT TIME. KEPT HIGH POPS GOING TUESDAY NORTHERN ZONES AND TAPERED THEM OFF TO THE SOUTH. WITH CLOUDS AND THREAT OF PCPN NORTH...THIS SHOULD HOLD HIGHS DOWN INTO THE 70S THERE...BUT RANGE TO LOWER 90S AT THE KANSAS BORDER. EXACT FRONTAL LOCATION AND CLOUD COVER WILL BE KEY FACTORS FOR HIGHS TUESDAY AND WEDNESDAY. PARAMETERS TUESDAY NIGHT ARE THE ABOUT THE SAME OR EVEN HIGHER... IN REGARDS TO THE HEAVY RAIN THREAT. SO IT SHOULD BE A SIMILAR NIGHT...WITH THE PRECIPITATION AXIS SHIFTING A LITTLE FARTHER SOUTH...GENERALLY FROM COLUMBUS TO HARLAN BY LATE TUESDAY NIGHT. COOLER AIR SHOULD PUSH SOUTHWARD WEDNESDAY WITH HIGHS STILL IN THE 70S NORTH BUT ONLY 80S SOUTHERN ZONES. KEPT RAIN CHANCES FAIRLY HIGH...FROM 50 TO 60 PERCENT. .LONG TERM...(WEDNESDAY NIGHT THROUGH SUNDAY) ISSUED AT 300 PM CDT SUN AUG 24 2014 THE 12Z GFS HAS COME INTO BETTER AGREEMENT WITH THE ECMWF...CANADIAN AND OTHER MODEL GUIDANCE. THE OPERATIONAL 12Z GFS IS STILL A LITTLE FASTER AT 00Z THURSDAY BUT THEN GENERALLY FALLS IN LINE AFTER THAT. HEAVY RAIN COULD OCCUR AGAIN WEDNESDAY NIGHT...BUT THE AXIS MAY SHIFT JUST A BIT FARTHER SOUTH COMPARED TO TUESDAY NIGHT...INTO SOUTHEAST NEBRASKA AND SOUTHWEST IOWA. WILL KEEP AN EYE ON THIS BECAUSE IF SOME AREAS GET MULTIPLE NIGHTS OF HEAVY RAIN...WE MAY NEED A FLASH FLOOD WATCH AT SOME POINT EITHER TUESDAY NIGHT OR WEDNESDAY NIGHT. PCPN CHANCES WILL SLOWLY DECREASE FROM THURSDAY INTO SATURDAY...BUT HELD ONTO POPS A BIT LONGER THAN PREVIOUS FORECASTS. TEMPERATURES WILL SLOWLY MODERATE FROM BELOW NORMAL THURSDAY TO AROUND NORMAL BY SUNDAY. && .AVIATION...(06Z TAFS FOR KOFK...KLNK AND KOMA.) ISSUED AT 1128 PM CDT SUN AUG 24 2014 ISOLATED TSTMS HAVE DEVELOPED SINCE 03Z SW TO NW OF KLNK NORTHWEST OF A NEARLY STALLED FRONT IN SE NEBR. THESE STORMS WERE IN AN APPARENT BAND OF ACCAS WHICH EXTENDED NEWD INTO A SMALL THUNDERSTORM CLUSTER OVER NW IA. TSTM COVERAGE COULD INCREASE ACROSS THIS AREA TONIGHT AND POSSIBLY IMPACT KLNK/KOMA. HOWEVER...CHANCES STILL APPEARED RELATIVELY SMALL THOUGH AT A PARTICULAR TAF SITE AND DECISION TO INCLUDE IN TAF FORECAST WILL BE MADE LAST MINUTE. WITH SFC DWPTS POOLING ALONG MO RIVER...FOG COULD BRIEFLY DEVELOP...ESPECIALLY AT KOMA...IF MID/HIGHER CLOUDS MANAGE TO CLEAR OUT BEFORE DAYBREAK. A BRIEF MVFR GROUP IN FOG WAS INCLUDED AT KOMA LATE TONIGHT TO ACCOUNT FOR THAT POSSIBILITY. EVEN THOUGH ISOLATED SHOWERS AND TSTMS ARE POSSIBLE MONDAY AFTN...MAINLY IN NERN NEBR...COVERAGE PROBABLY WON/T REALLY INCREASE OVER ERN NEBR UNTIL THE EVENING HOURS AS WARM ADVECTION INCREASES NORTH OF THE STALLED FRONT EXPECTED TO BE NEAR THE KS BORDER. THUS A PROB30 GROUP WAS CARRIED AT ALL SITES MONDAY EVENING. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...NONE. IA...NONE. && SHORT TERM...MILLER LONG TERM...MILLER AVIATION...CHERMOK
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 449 PM CDT SUN AUG 24 2014 IAZ043-055-NEZ011-012-015>018-030>034-042>045-050>053-065-066-078- 251200- MONONA-HARRISON-KNOX-CEDAR-THURSTON-ANTELOPE-PIERCE-WAYNE-BOONE- MADISON-STANTON-CUMING-BURT-PLATTE-COLFAX-DODGE-WASHINGTON-BUTLER- SAUNDERS-DOUGLAS-SARPY-SEWARD-LANCASTER-SALINE- 449 PM CDT SUN AUG 24 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL IOWA...EAST CENTRAL NEBRASKA...NORTHEAST NEBRASKA AND SOUTHEAST NEBRASKA. .DAY ONE...TONIGHT AND MONDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. A WEAK COLD FRONT STRETCHED FROM WEST CENTRAL IOWA INTO SOUTHEAST NEBRASKA LATE THIS AFTERNOON. ISOLATED THUNDERSTORMS MAY DEVELOP OVER SOUTHEAST NEBRASKA AND SOUTHWEST IOWA ALONG AND AHEAD OF THE COLD FRONT THIS EVENING AS IT DRIFTS TO THE SOUTHEAST. ISOLATED THUNDERSTORMS ARE POSSIBLE AGAIN ON MONDAY...MAINLY IN SOUTHEAST NEBRASKA AND SOUTHWEST IOWA...AS THE FRONT STALLS ALONG THE SOUTHEAST NEBRASKA BORDER INTO SOUTHWEST IOWA. .DAYS TWO THROUGH SEVEN...MONDAY NIGHT THROUGH SUNDAY THUNDERSTORM CHANCES WILL REMAIN IN THE FORECAST THROUGH THURSDAY AS THE STALLED FRONTAL BOUNDARY REMAINS ACROSS THE REGION. THE FRONT WILL BE THE FOCUS FOR SEVERAL ROUNDS OF STORMS...ESPECIALLY ALONG AND NORTH OF INTERSTATE 80. IN THIS AREA...LOCALLY HEAVY RAIN AND STRONGER STORMS ARE POSSIBLE MONDAY NIGHT THROUGH WEDNESDAY NIGHT. RAINFALL AMOUNTS OF 2 TO 4 INCHES COULD OCCUR DURING THIS TIME WITH LOWER AMOUNTS NEAR THE KANSAS AND NEBRASKA BORDER REGION. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT OR MONDAY. IAZ056-069-079-080-090-091-NEZ067-068-088>093-251200- SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-PAGE-CASS-OTOE- JEFFERSON-GAGE-JOHNSON-NEMAHA-PAWNEE-RICHARDSON- 449 PM CDT SUN AUG 24 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST IOWA AND SOUTHEAST NEBRASKA. .DAY ONE...TONIGHT AND MONDAY A WEAK COLD FRONT STRETCHED FROM WEST CENTRAL IOWA INTO SOUTHEAST NEBRASKA LATE THIS AFTERNOON. ISOLATED THUNDERSTORMS MAY DEVELOP OVER SOUTHEAST NEBRASKA AND SOUTHWEST IOWA ALONG AND AHEAD OF THE COLD FRONT LATE THIS AFTERNOON AND THIS EVENING AS IT DRIFTS TO THE SOUTHEAST. ANY STORM THAT DEVELOPS MAY HAVE GUSTY WINDS AND SMALL HAIL...BUT WIDESPREAD SEVERE WEATHER IS NOT EXPECTED. ISOLATED THUNDERSTORMS ARE POSSIBLE AGAIN ON MONDAY...MAINLY IN SOUTHEAST NEBRASKA AND SOUTHWEST IOWA...AS THE FRONT STALLS ALONG THE SOUTHEAST NEBRASKA BORDER AND SOUTHWEST IOWA. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THUNDERSTORM CHANCES WILL REMAIN IN THE FORECAST THROUGH THURSDAY AS THE STALLED FRONTAL BOUNDARY REMAINS ACROSS THE REGION. THE FRONT WILL BE THE FOCUS FOR SEVERAL ROUNDS OF STORMS...ESPECIALLY ALONG AND NORTH OF INTERSTATE 80. IN THIS AREA...LOCALLY HEAVY RAIN AND STRONGER STORMS ARE POSSIBLE MONDAY NIGHT THROUGH WEDNESDAY NIGHT. RAINFALL AMOUNTS OF 2 TO 4 INCHES COULD OCCUR DURING THIS TIME WITH LOWER AMOUNTS NEAR THE KANSAS AND NEBRASKA BORDER REGION. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION SHOULD NOT BE NEEDED TONIGHT OR MONDAY. FOBERT
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 659 PM CDT SUN AUG 24 2014 NEZ091-093-250045- RICHARDSON NE-NEMAHA NE- 659 PM CDT SUN AUG 24 2014 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN RICHARDSON AND SOUTHEASTERN NEMAHA COUNTIES UNTIL 745 PM CDT... AT 658 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER HUMBOLDT...OR 17 MILES NORTHWEST OF SABETHA...MOVING NORTHEAST AT 30 MPH. HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... AUBURN...HUMBOLDT...STELLA...NEMAHA...DAWSON AND 7 MILES SOUTH OF AUBURN. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 4014 9601 4042 9592 4034 9565 4006 9587 TIME...MOT...LOC 2358Z 208DEG 20KT 4013 9594 FOBERT
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1209 AM CDT MON AUG 25 2014
NEZ066-078-088-089-250545-
GAGE NE-JEFFERSON NE-LANCASTER NE-SALINE NE-
1209 AM CDT MON AUG 25 2014
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SALINE...
JEFFERSON...NORTHWESTERN GAGE AND SOUTH CENTRAL LANCASTER COUNTIES
UNTIL 1245 AM CDT...
AT 1208 AM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS EXTENDING FROM NEAR PLYMOUTH TO 6 MILES SOUTHEAST OF
GILEAD...AND MOVING EAST AT 15 MPH.
NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
BEATRICE...FAIRBURY...WILBER...DE WITT...CORTLAND...PLYMOUTH...
DILLER...CLATONIA...HALLAM...PICKRELL...ENDICOTT...JANSEN...
SWANTON...REYNOLDS...STEELE CITY...HARBINE...CRYSTAL SPRINGS
CAMPGROUND...CAMP JEFFERSON...CUB CREEK RECREATIONAL AREA AND ROCK
CREEK STATION STATE HISTORICAL PARK.
LAT...LON 4013 9737 4037 9714 4057 9682 4051 9655
4004 9700 4001 9737
TIME...MOT...LOC 0508Z 253DEG 14KT 4032 9705 4010 9731
CHERMOKThe Grand Island radar (KUEX), 118 km away, was scanning. The volume nearest the first event began at 05:15 UTC.
1 thunderstorm wind. Local standard time, as filed.
The emergency manger reported that a 2 year old 60 by 90 foot barn was destroyed at a rural residence.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2014Every state in 2014This day in weather historyWarnings in Nebraska, August 2014
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 530226.