Alert archive / Iowa / Flash Flood Warnings in 2010
Flash Flood Warning 16, NWS Omaha, NE
NWS Omaha, NE issued this flash flood warning at Jun 22, 2010, 3:32 AM CDT for Harrison County, Iowa. 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
- Jun 22, 2010, 3:32 AM CDT (08:32 UTC)
- Expired
- Jun 22, 2010, 6:54 AM CDT
- In force
- 3 hr
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Flood severity
- None
County Harrison County, IA
The radar
The Omaha radar (KOAX), 61 km from the middle of the area, began a volume at 08:35 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
Topeka, KS (KTOP), launched 00:00Z, 8.5 hours before the alert went out and 299 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
- 3501 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 1328 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 14.0
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 22, 3:25 AM CDT, 7 minutes earlier.
Area forecast discussion, Jun 22, 3:25 AM CDT, 7 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
325 AM CDT TUE JUN 22 2010
.UPDATE...
CANCELLED HIGH WIND WARNING.
&&
.PREV DISCUSSION... /ISSUED 256 AM CDT TUE JUN 22 2010/
DISCUSSION...
OH BOY...ANOTHER LATE NIGHT MCS. HOPEFULLY MODELS IDEA OF A COLD FRONT
PUSHING SOUTH OF THE AREA TUESDAY NIGHT INTO WEDNESDAY MORNING
COMES THROUGH AND PROVIDES SOME BREAK IN THE NUMEROUS ROUNDS OF
HEAVY RAIN AND FLOODING OVER THE AREA.
IN THE MEANTIME...ONGOING CONVECTION OVER THE AREA EARLY THIS
MORNING LOOKS TO BE PROGRESSIVE...AT LEAST ON THE SOUTHERN END
ACROSS SOUTHEAST NEBRASKA WHILE NORTHERN BAND DEVELOPING A MORE
EAST-WEST ORIENTATION WITH A SLOW DRIFT NORTH. INITIALLY WILL
CARRY SOME LOW POPS THROUGH THE MORNING BUT WILL NEED TO MONITOR
SECONDARY CLUSTER OVER WESTERN NEBRASKA AND SEE HOW IT DEVELOPS
PRIOR TO ISSUANCE. PLAN TO LEAVE AFTERNOON DRY FOR NOW AS
ATMOSPHERE RECHARGES. LIKELY POPS IN PLACE FOR TONIGHT AS STRONGER
WAVE MOVES TOWARD THE NORTHERN PLAINS AND GOOD CONVERGENCE
DEVELOPS ALONG THE COLD FRONT MOVING INTO AREA. LINGERING POPS
SOUTHEAST WEDNESDAY MORNING THEN DRY FOR A WHILE.
TEMPERATURES WILL CONTINUE TO BE A PROBLEM TODAY DEPENDING ON
EXTENT AND DURATION OF CONVECTION AND POSITION OF SURFACE BOUNDARY
THAT HAS BEEN HANGING AROUND THE SOUTHERN BORDER AREA. MODELS TRY
TO LIFT IT NORTH TOWARD NORTHEAST NEBRASKA TODAY AS THE UPPER WAVE
APPROACHES THE CENTRAL ROCKIES. CONTINUED TO TREND TOWARD THE
COOLER SIDE OF GUIDANCE WITH 90 OR BETTER OVER SOUTH HALF OF THE CWA.
NO CHANGES TO EXTENDED FORECAST AT THIS TIME.
AVIATION...
TAF SITES KOFK/KOMA/KLNK
06Z TAFS
CONVECTION ENDING THIS MORNING WITH MORE STORMS POSSIBLE THIS
EVENING AND OVERNIGHT AS SURFACE BOUNDARY STALLED ALONG THE SOUTHERN
BORDER PAST FEW DAYS LIFTS NORTH AND STRONG UPPER WAVE APPROACHES
THE WESTERN HIGH PLAINS. OUTSIDE OF THE PERIODS OF CONVECTION EXPECT
TO SEE VFR CONDITIONS FOR ALL THREE TAF SITES.
&&
.OAX WATCHES/WARNINGS/ADVISORIES...
NE...FLASH FLOOD WATCH UNTIL 10 AM CDT THIS MORNING FOR NEZ065>068-
078-088>093.
IA...NONE.
&&
FOBERT/DEWALDHazardous weather outlook, Jun 21, 10:05 PM CDT, 5 hours 27 minutes before
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Special weather statement, Jun 22, 1:27 AM CDT, 2 hours 5 minutes before
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</html>Special weather statement, Jun 22, 1:42 AM CDT, 1 hour 50 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 142 AM CDT TUE JUN 22 2010 NEZ017-031-220715- MADISON NE-PIERCE NE- 142 AM CDT TUE JUN 22 2010 ...SPECIAL WEATHER STATEMENT FOR SOUTHERN PIERCE AND MADISON COUNTIES UNTIL 215 AM CDT... AT 137 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM 8 MILES NORTH OF NEWMAN GROVE...OR 21 MILES SOUTHWEST OF NORFOLK...MOVING NORTHEAST AT 25 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... NORFOLK... MEADOW GROVE... BATTLE CREEK... HADAR... PIERCE... TILDEN... WILLOW CREEK STATE RECREATION AREA... TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. MAYES
Special weather statement, Jun 22, 1:58 AM CDT, 1 hour 34 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 158 AM CDT TUE JUN 22 2010 NEZ031-032-042-043-220730- COLFAX NE-MADISON NE-PLATTE NE-STANTON NE- 158 AM CDT TUE JUN 22 2010 ...SPECIAL WEATHER STATEMENT FOR SOUTHWESTERN STANTON...EASTERN PLATTE...SOUTHEASTERN MADISON AND NORTHERN COLFAX COUNTIES UNTIL 230 AM CDT... AT 156 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM NEAR CRESTON...OR 14 MILES NORTH OF COLUMBUS... MOVING NORTHEAST AT 25 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... CRESTON... MADISON... LEIGH... CLARKSON... 9 MILES NORTH OF SCHUYLER... 8 MILES SOUTH OF STANTON... TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. MAYES
Special weather statement, Jun 22, 2:11 AM CDT, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 211 AM CDT TUE JUN 22 2010 IAZ055-220745- HARRISON IA- 211 AM CDT TUE JUN 22 2010 ...SPECIAL WEATHER STATEMENT FOR HARRISON COUNTY UNTIL 245 AM CDT... AT 206 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM NEAR MISSOURI VALLEY...OR 23 MILES NORTH OF OMAHA...MOVING NORTHEAST AT 25 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... LOGAN... PERSIA... MAGNOLIA... WOODBINE... DUNLAP... TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. MAYES
Special weather statement, Jun 22, 2:15 AM CDT, 1 hour 17 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 215 AM CDT TUE JUN 22 2010 NEZ017-018-031-032-220745- MADISON NE-PIERCE NE-STANTON NE-WAYNE NE- 215 AM CDT TUE JUN 22 2010 ...SPECIAL WEATHER STATEMENT FOR NORTHWESTERN STANTON...WAYNE... SOUTHEASTERN PIERCE AND NORTHEASTERN MADISON COUNTIES UNTIL 245 AM CDT... AT 210 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM NEAR NORFOLK...MOVING NORTHEAST AT 30 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... HADAR... HOSKINS... WINSIDE... CARROLL... WAYNE... 8 MILES SOUTH OF WAYNE... SHOLES... TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. MAYES
Special weather statement, Jun 22, 2:48 AM CDT, 44 minutes before
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</html>The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 1:58 AM CDT | Flash Flood Warning | OAX | Boone, Platte | 6 hr |
| Jun 22, 2:15 AM CDT | High Wind Warning | OAX | Butler, Lancaster, Saline, Saunders, Seward | 55 min |
| Jun 22, 9:50 AM CDT | River Flood Warning | OAX | Dodge | 3 days |
| Jun 22, 9:50 AM CDT | River Flood Warning | OAX | Douglas | 24 hr |
| Jun 22, 9:50 AM CDT | River Flood Warning | OAX | Dodge | 38 hr |
| Jun 22, 9:50 AM CDT | River Flood Warning | OAX | Platte | 19 hr |
| Jun 22, 10:04 AM CDT | River Flood Warning | OAX | Gage | 23 hr |
| Jun 22, 12:18 PM CDT | River Flood Warning | OAX | Saunders | 18 hr |
| Jun 22, 12:58 PM CDT | River Flood Advisory | OAX | Dodge | 36 hr |
| Jun 22, 2:59 PM CDT | River Flood Advisory | OAX | Seward | 36 hr |
| Jun 22, 3:53 PM CDT | Flash Flood Watch | OAX | Antelope, Boone, Burt, Butler, Cass, Cedar and 24 more | 12 hr |
| Jun 22, 10:05 AM CDT | River Flood Warning | OAX | Montgomery | 16 hr |
| Jun 22, 10:05 AM CDT | River Flood Warning | OAX | Pottawattamie | 16 hr |
| Jun 22, 10:05 AM CDT | River Flood Warning | OAX | Fremont | 16 hr |
Nearby
Flash Flood Warnings in Iowa, 2010Every flash flood warning in 2010
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.