Alert archive / Iowa / Tornado Warnings in 1991

Tornado Warning 26, NWS Des Moines, IA

June 15, 1991Bremer County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 15, 1991, 12:21 AM CDT for Bremer County, Iowa. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
Jun 15, 1991, 12:21 AM CDT (05:21 UTC)
Expired
Jun 15, 1991, 1:00 AM CDT
In force
39 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Bremer County, IA

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 5.4 hours before the alert went out and 253 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, Minneapolis, MN at 00:00Z on 1991-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 807 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, Minneapolis, MN at 00:00Z on 1991-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 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
807 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1047 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
125 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 14, 7:37 PM CDTSevere Thunderstorm WarningDMXChickasaw33 min
Jun 14, 7:37 PM CDTSevere Thunderstorm WarningDMXBremer68 min
Jun 14, 8:07 PM CDTSevere Thunderstorm WarningDMXBremer68 min
Jun 14, 8:43 PM CDTSevere Thunderstorm WarningDMXCerro Gordo47 min
Jun 14, 9:25 PM CDTSevere Thunderstorm WarningDMXBuena Vista50 min
Jun 14, 9:47 PM CDTSevere Thunderstorm WarningDMXSac43 min
Jun 14, 10:04 PM CDTSevere Thunderstorm WarningDMXPocahontas41 min
Jun 14, 10:13 PM CDTSevere Thunderstorm WarningDMXDallas, Polk47 min
Jun 14, 10:15 PM CDTSevere Thunderstorm WarningDMXDallas, Guthrie24 min
Jun 14, 10:41 PM CDTSevere Thunderstorm WarningDMXStory44 min
Jun 14, 11:26 PM CDTFlash Flood WarningDMXCerro Gordo, Floyd4 hr
Jun 14, 11:26 PM CDTFlash Flood WarningDMXBremer, Chickasaw, Fayette4 hr

Nearby

Tornado Warnings in Iowa, 1991Every tornado warning in 1991Tornadoes in 1991

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.