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Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at GRB, 00Z. Its levels are in the table below.
Observed Sounding at GRB, for (4 h 29 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (57)
GRB: the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1002 mb214 m8.21.2000° 9 kt
1000 mb226 m7.60.6350° 20 kt
990 mb308 m6.8-1.2—
954 mb610 m3.8-2.8345° 29 kt
937 mb753 m2.4-3.6—
925 mb856 m1.2-3.8345° 30 kt
884 mb1219 m-1.8-4.5000° 25 kt
863 mb1409 m-3.1-5.9—
851 mb1524 m-4.1-6.5000° 23 kt
850 mb1529 m-4.1-6.5000° 22 kt
818 mb1829 m-5.5-13.2345° 26 kt
798 mb2025 m-5.1-26.1—
787 mb2134 m-5.9-26.5010° 34 kt
757 mb2438 m-8.0-27.1000° 35 kt
741 mb2602 m-9.1-28.1—
728 mb2743 m-9.4-30.1355° 30 kt
702 mb3019 m-10.5-33.5—
700 mb3041 m-10.3-33.3000° 34 kt
674 mb3333 m-10.9-35.9—
646 mb3658 m-9.3-40.5000° 45 kt
621 mb3962 m-10.5-36.2005° 50 kt
597 mb4267 m-13.0-31.3000° 53 kt
574 mb4566 m-15.5-26.5—
557 mb4793 m-16.5-28.5—
529 mb5182 m-18.3-29.3005° 49 kt
508 mb5486 m-19.9-30.2000° 52 kt
500 mb5600 m-20.5-30.5000° 52 kt
488 mb5778 m-21.5-31.5—
469 mb6069 m-23.3-35.3—
440 mb6531 m-26.1-35.1—
429 mb6706 m-27.3-37.0000° 64 kt
411 mb7010 m-29.4-39.4355° 62 kt
400 mb7210 m-31.1-41.1000° 63 kt
388 mb7425 m-32.9-44.9—
377 mb7620 m-34.3-45.7000° 65 kt
361 mb7925 m-36.6-47.6000° 70 kt
346 mb8230 m-39.2-49.7355° 75 kt
330 mb8534 m-41.1-52.1355° 73 kt
316 mb8839 m-41.5-54.4350° 72 kt
302 mb9144 m-41.4-56.1355° 79 kt
300 mb9190 m-41.1-56.1355° 74 kt
285 mb9537 m-43.1-59.1—
271 mb9874 m-44.9-59.9—
253 mb10331 m-46.9-61.9—
250 mb10410 m-47.1-62.1345° 51 kt
230 mb10973 m-48.0-64.0335° 46 kt
219 mb11278 m-48.4-64.4340° 36 kt
202 mb11815 m-50.1-66.1—
200 mb11880 m-50.5-66.5300° 34 kt
174 mb12802 m-48.2-66.2295° 47 kt
158 mb13411 m-51.8-69.3270° 34 kt
150 mb13760 m-53.7-70.7270° 40 kt
139 mb14249 m-53.3-71.3—
127 mb14829 m-53.3-71.3—
114 mb15519 m-56.3-73.3—
103 mb16154 m-56.5-73.5285° 43 kt
100 mb16350 m-57.3-74.3280° 34 kt
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

Tennessee briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.