Alert archive / Iowa / Flash Flood Warnings in 2000

Flash Flood Warning 2, NWS Omaha, NE

June 13, 2000Mills County, Iowa

NWS Omaha, NE issued this flash flood warning at Jun 13, 2000, 5:52 PM CDT for Mills County, Iowa. It was in force for 4 hr. No storm report in the archive falls 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.

The facts

Issued: Jun 13, 2000, 5:52 PM CDT (22:52 UTC)
Expired: Jun 13, 2000, 10:00 PM CDT
In force: 4 hr
Issued by: NWS Omaha, NE
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Mills County, IA

The radar

The Omaha radar (KOAX), 64 km from the middle of the area, began a volume at 22:55 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 12:00Z, 10.9 hours before the alert went out and 64 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 997 J/kg
Mixed-layer CIN: -254 J/kg
Mixed-layer LCL: 1473 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KOAX 132253
FFWOAX
IAC129-140300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OMAHA NE
552 PM CDT TUE JUN 13 2000

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MILLS COUNTY IN SOUTHWEST IOWA

* UNTIL 10 PM CDT

* AT 540 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN HAD FALLEN FROM SILVER CITY...TO GLENWOOD AND PACIFIC
  JUNCTION.  RADAR ESTIMATES OF 3 TO 5 INCHES ARE INDICATED.  IN
  ADDITION...ADDITIONAL HEAVY RAINS ARE POSSIBLE. KEG CREEK WILL
  CONTINUE TO RISE IN GLENWOOD THROUGH THE EVENING.

AVOID FLOODED BASEMENTS...WHICH COULD COLLAPSE.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS...ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

TO REPORT SEVERE WEATHER...HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICEz IN
OMAHA.

LAT...LON 4115 9587 4093 9582 4091 9543 4116 9544

BYRD
NNNN

The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 13, 2:02 PM CDT	Tornado Warning	OAX	Pottawattamie	43 min
Jun 13, 2:28 PM CDT	Severe Thunderstorm Warning	OAX	Harrison	62 min
Jun 13, 2:45 PM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	45 min
Jun 13, 3:17 PM CDT	Tornado Warning	OAX	Mills	28 min
Jun 13, 3:20 PM CDT	Tornado Warning	OAX	Harrison, Shelby	40 min
Jun 13, 3:30 PM CDT	Tornado Warning	OAX	Fremont	45 min
Jun 13, 3:45 PM CDT	Tornado Warning	OAX	Mills	30 min
Jun 13, 4:11 PM CDT	Tornado Warning	OAX	Mills, Montgomery, Pottawattamie	34 min
Jun 13, 4:11 PM CDT	Tornado Warning	OAX	Fremont, Page	34 min
Jun 13, 4:37 PM CDT	Tornado Warning	OAX	Montgomery	23 min
Jun 13, 4:44 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Pottawattamie	46 min
Jun 13, 5:08 PM CDT	Tornado Warning	OAX	Montgomery	37 min
Jun 13, 5:21 PM CDT	Severe Thunderstorm Warning	OAX	Harrison	54 min
Jun 13, 5:33 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Page	57 min
Jun 13, 6:18 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Pottawattamie	57 min

Nearby

Flash Flood Warnings in Iowa, 2000 Every flash flood warning in 2000

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.