Alert archive / Missouri / Special Weather Statements in 2012

Special Weather Statement, NWS Kansas City, MO

May 4, 2012Nodaway County, Missouri

NWS Kansas City, MO issued this special weather statement at May 4, 2012, 2:31 AM CDT for Nodaway County, Missouri. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 4, 2012, 2:31 AM CDT (07:31 UTC)
Expired
May 4, 2012, 3:15 AM CDT
In force
44 min
Issued by
NWS Kansas City, MO

County Nodaway County, MO

The radar

The Omaha radar (KOAX), 167 km from the middle of the area, began a volume at 07:31 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, 7.5 hours before the alert went out and 167 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, Omaha, NE at 00:00Z on 2012-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2202 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, Omaha, NE at 00:00Z on 2012-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.193958Sfc1 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
2202 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
1397 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.0

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

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

NWS Kansas City, MO wrote its last area forecast discussion before this special weather statement went out at May 4, 12:31 AM CDT, 2 hours earlier.

Area forecast discussion, May 4, 12:31 AM CDT, 2 hours before
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Hazardous weather outlook, May 3, 5:27 PM CDT, 9 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
527 PM CDT THU MAY 3 2012

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-041145-
ATCHISON KS-MIAMI-LINN KS-DONIPHAN-LEAVENWORTH-WYANDOTTE-JOHNSON KS-
ATCHISON MO-NODAWAY-WORTH-GENTRY-HARRISON-MERCER-PUTNAM-SCHUYLER-
HOLT-ANDREW-DE KALB-DAVIESS-GRUNDY-SULLIVAN-ADAIR-BUCHANAN-CLINTON-
CALDWELL-LIVINGSTON-LINN MO-MACON-PLATTE-CLAY-RAY-CARROLL-CHARITON-
RANDOLPH-JACKSON-LAFAYETTE-SALINE-HOWARD-CASS-JOHNSON MO-PETTIS-
COOPER-BATES-HENRY-
527 PM CDT THU MAY 3 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL AND
WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS.

.DAY ONE...TONIGHT

THUNDERSTORMS ARE REDEVELOPING THIS EVENING IN PORTIONS OF
IOWA...NEBRASKA...AND NORTH CENTRAL KANSAS ALONG A STALLED BOUNDARY.
THESE STORMS ARE FORECAST TO MOVE INTO THE OUTLOOK AREA LATER THIS
EVENING INTO THE OVERNIGHT. SEVERE THUNDERSTORMS PRODUCING LARGE HAIL
AND DAMAGING WINDS WILL BE POSSIBLE THROUGH EARLY FRIDAY MORNING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SCATTERED THUNDERSTORMS MAY LINGER OVER THE EASTERN PORTIONS OF THE
OUTLOOK AREA FRIDAY MORNING. WHILE THE SEVERE WEATHER THREAT WILL BE
DIMINISHED A FEW OF THESE STORMS MAY STILL BE CAPABLE OF PRODUCING
SMALL HAIL.

UNSEASONABLY WARM AND HUMID AIR WILL OVERTAKE THE REGION BY FRIDAY
WITH TEMPERATURES CLIMBING NEAR 90 DEGREES FRIDAY AND SATURDAY. HEAT
INDEX VALUES NEAR 95 DEGREES ARE POSSIBLE FRIDAY AND SATURDAY
AFTERNOON.

THERE IS A SMALL CHANCE FOR SEVERE THUNDERSTORMS ACROSS MAINLY
NORTHERN MISSOURI BOTH FRIDAY EVENING AND SATURDAY EVENING. LARGE
HAIL AND DAMAGING WINDS ARE THE MAIN HAZARDS.

AN EXTREMELY UNSTABLE AIRMASS WILL REMAIN IN PLACE ACROSS THE ENTIRE
OUTLOOK REGION SUNDAY AFTERNOON AND EVENING. THIS MAY ALLOW FOR
SEVERE THUNDERSTORMS TO DEVELOP BY LATE AFTERNOON. LARGE HAIL AND
DAMAGING WINDS ARE THE MAIN HAZARD FROM STORMS LATE SUNDAY AFTERNOON
AND EVENING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED ACROSS THE ENTIRE OUTLOOK AREA TONIGHT.

MJM

In the hours before

Special weather statement, May 4, 12:08 AM CDT, 2 hours 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1208 AM CDT FRI MAY 4 2012

KSZ102-MOZ011-012-040545-
ANDREW MO-DONIPHAN KS-HOLT MO-
1208 AM CDT FRI MAY 4 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ANDREW...
SOUTHEASTERN HOLT AND NORTHERN DONIPHAN COUNTIES UNTIL 1245 AM CDT...

AT 1205 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR HIGHLAND...MOVING EAST AT 25 MPH.

HAIL UP TO THE SIZE OF NICKELS IS EXPECTED WITH THIS STORM...ALONG
WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  FOREST CITY...OREGON...AMAZONIA AND FANNING.

THIS WILL IMPACT

 I-29 BETWEEN MILE MARKERS 58 AND 71.

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.

LAT...LON 3989 9534 3994 9535 4001 9533 4000 9531
      4001 9532 4002 9532 3999 9480 3977 9497
      3984 9535 3988 9535
TIME...MOT...LOC 0508Z 277DEG 22KT 3992 9522

MJM
Special weather statement, May 4, 12:12 AM CDT, 2 hours 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1212 AM CDT FRI MAY 4 2012

MOZ005-014-015-040600-
DAVIESS MO-GRUNDY MO-HARRISON MO-
1212 AM CDT FRI MAY 4 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN HARRISON...WESTERN
GRUNDY AND NORTHEASTERN DAVIESS COUNTIES UNTIL 100 AM CDT...

AT 1210 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR GILMAN CITY...OR 13 MILES SOUTHEAST OF
BETHANY...MOVING EAST AT 10 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH VERY HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  GILMAN CITY AND BRIMSON.

THIS STORM MAY INTENSIFY....AND A TORNADO WATCH IS IN EFFECT FOR THIS
AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS
LOCAL CABLE TV OUTLETS....FOR ADDITIONAL INFORMATION AND POSSIBLE
WARNINGS FROM THE NATIONAL WEATHER SERVICE.

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.

LAT...LON 4026 9368 4001 9363 4004 9401 4016 9404
TIME...MOT...LOC 0512Z 260DEG 7KT 4010 9392

HAWBLITZEL
Local storm report, May 4, 1:25 AM CDT, 1 hour 6 minutes before
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Local storm report, May 4, 1:30 AM CDT, 1 hour 1 minute before
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Special weather statement, May 4, 1:31 AM CDT, 1 hour before
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Special weather statement, May 4, 2:31 AM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
231 AM CDT FRI MAY 4 2012

MOZ002-040815-
NODAWAY MO-
231 AM CDT FRI MAY 4 2012

...SIGNIFICANT WEATHER ADVISORY FOR NODAWAY COUNTY UNTIL 315 AM
CDT...

AT 227 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR MARYVILLE...MOVING NORTHEAST AT 15 MPH.

HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG
WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  MARYVILLE...RAVENWOOD AND PICKERING.

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.

LAT...LON 4048 9463 4030 9462 4024 9494 4039 9507
      4058 9473 4058 9468
TIME...MOT...LOC 0731Z 236DEG 15KT 4036 9490

MJM

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 4, 12:08 AM CDTSpecial Weather StatementEAXAndrew37 min
May 4, 12:12 AM CDTSpecial Weather StatementEAXDaviess48 min
May 4, 12:18 AM CDTSevere Thunderstorm WarningEAXDaviess, Grundy, Livingston42 min
May 4, 12:29 AM CDTSevere Thunderstorm WarningEAXAndrew, Daviess, DeKalb, Gentry, Harrison, Nodaway46 min
May 4, 12:42 AM CDTAreal Flood AdvisoryEAXAndrew, Daviess, DeKalb, Gentry, Grundy, Harrison and 1 more6 hr
May 4, 1:28 AM CDTFlash Flood WarningEAXDaviess, DeKalb, Gentry6 hr
May 4, 1:31 AM CDTSpecial Weather StatementEAXGrundy, Sullivan44 min
May 4, 3:12 AM CDTFlash Flood WarningEAXGentry, Nodaway, Worth6 hr
May 4, 3:20 AM CDTSpecial Weather StatementEAXNodaway40 min
May 4, 3:50 AM CDTSpecial Weather StatementEAXHarrison40 min
May 4, 3:55 AM CDTSevere Thunderstorm WarningEAXHarrison14 min
May 4, 4:08 AM CDTAreal Flood AdvisoryEAXHarrison6 hr
May 4, 5:07 AM CDTRiver Flood WarningEAXDaviess, Gentry26 hr
May 4, 6:25 AM CDTSpecial Weather StatementEAXLafayette35 min
May 4, 7:05 AM CDTRiver Flood WarningEAXAndrew, Nodaway5 hr
May 4, 7:28 AM CDTRiver Flood WarningEAXDaviess, Livingston22 hr
May 4, 10:06 AM CDTRiver Flood WarningEAXLinn, Livingston31 hr
May 4, 10:06 AM CDTRiver Flood WarningEAXCarroll, Chariton, Linn, Livingston52 hr
May 4, 3:01 PM CDTRiver Flood WarningEAXBuchanan26 hr
May 4, 3:01 PM CDTRiver Flood WarningEAXPlatte37 hr
May 4, 5:58 AM CDTSpecial Weather StatementEAXWyandotte47 min

Nearby

Special Weather Statements in Missouri, 2012Every special weather statement in 2012

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.