Alert archive / Nebraska / Flood Watches in 2007

Flood Watch 4, NWS Hastings, NE

August 1, 200724 counties in Nebraska; 6 counties in Kansas

NWS Hastings, NE issued this flood watch at Aug 1, 2007, 1:12 PM CDT for 24 counties in Nebraska; 6 counties in Kansas. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Aug 1, 2007, 1:12 PM CDT (18:12 UTC)
Expired
Aug 2, 2007, 4:04 AM CDT
In force
15 hr
Issued by
NWS Hastings, NE
Flood severity
None
All 30 counties

Jewell County, KS, Mitchell County, KS, Osborne County, KS, Phillips County, KS, Rooks County, KS, Smith County, KS, Adams County, NE, Buffalo County, NE, Clay County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Sherman County, NE, Thayer County, NE, Valley County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 27 km from the middle of the area, began a volume at 18:14 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 6.2 hours before the alert went out and 179 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2007-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1011 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2007-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1011 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
848 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Hastings, NE wrote its last area forecast discussion before this flood watch went out at Aug 1, 12:54 PM CDT, 18 minutes earlier.

Area forecast discussion, Aug 1, 12:54 PM CDT, 18 minutes before
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Hazardous weather outlook, Aug 1, 12:03 PM CDT, 1 hour 9 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HASTINGS NE
1203 PM CDT WED AUG 1 2007

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-
021200-
PHILLIPS-SMITH-JEWELL-ROOKS-OSBORNE-MITCHELL-VALLEY-GREELEY-NANCE-
SHERMAN-HOWARD-MERRICK-POLK-DAWSON-BUFFALO-HALL-HAMILTON-YORK-
GOSPER-PHELPS-KEARNEY-ADAMS-CLAY-FILLMORE-FURNAS-HARLAN-FRANKLIN-
WEBSTER-NUCKOLLS-THAYER-
1203 PM CDT WED AUG 1 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL NEBRASKA AND
PORTIONS OF NORTH CENTRAL KANSAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

A SLIGHT THREAT OF SEVERE THUNDERSTORMS WILL EXIST MAINLY THIS
EVENING ACROSS MOST OF THE OUTLOOK AREA. THE HIGHEST THREAT OF
SEVERE WEATHER WILL EXIST WEST OF AN OSBORNE KANSAS TO HASTINGS
NEBRASKA TO SILVER CREEK NEBRASKA LINE. LARGE HAIL UP TO THE SIZE
OF QUARTERS AND DAMAGING WINDS UP TO 60 MPH WILL BE POSSIBLE FROM
ANY STORMS THAT DO BECOME SEVERE. THESE STORMS WILL ALSO BE CAPABLE OF
PRODUCING VERY HEAVY RAINFALL WITH RAINFALL AMOUNTS OF 2 TO 4
INCHES POSSIBLE. THIS ADDITIONAL HEAVY RAIN ON ALREADY SATURATED
GROUND MAY CAUSE FLOODING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

A CHANCE OF SHOWERS AND THUNDERSTORMS PRODUCING HEAVY RAINFALL
WILL CONTINUE INTO THURSDAY. THIS MAY RESULT IN A CONTINUED CHANCE
OF FLOODING...ESPECIALLY ON GROUND ALREADY SATURATED FROM PREVIOUS
RAINFALL.

IN ADDITION...AN INTERMITTENT CHANCE OF SHOWERS AND THUNDERSTORMS
WILL ALSO EXIST FRIDAY AND SUNDAY NIGHT ALONG WITH TUESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED THIS EVENING...ESPECIALLY WEST OF AN
OSBORNE KANSAS TO HASTINGS NEBRASKA TO SILVER CREEK NEBRASKA LINE.

&&

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB PAGE:
   HTTP://WWW.WEATHER.GOV/HASTINGS  (ALL LOWERCASE)

In the hours before

Local storm report, Aug 1, 7:18 AM CDT, 5 hours 54 minutes before
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Local storm report, Aug 1, 7:26 AM CDT, 5 hours 46 minutes before
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Local storm report, Aug 1, 7:59 AM CDT, 5 hours 13 minutes before
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Local storm report, Aug 1, 12:24 PM CDT, 48 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 5:48 PM CDTRiver Flood WarningGIDWebster65 days
Aug 1, 6:13 PM CDTSevere Thunderstorm WarningGIDAdams24 min
Aug 1, 4:02 PM CDTTornado WarningGIDSmith28 min

Nearby

Flood Watches in Nebraska, 2007Flood Watches in Kansas, 2007Every flood watch in 2007

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.